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c:T5e72,<p><span style="font-size: 14px;">Are you planning to attend an interview for the NetApp role but confused on how to crack that interview and also what would be the most probable NetApp Interview Questions that the interviewer may ask? Well, you have reached the right place. Tekslate has collected the most frequently asked <strong>NetApp Interview Questions</strong> which are often asked in multiple interviews.</span></p>
<table style="border-collapse: collapse; width: 100%; height: 214.229px;" border="1px" cellpadding="10">
<tbody>
<tr style="height: 214.229px;">
<td style="width: 98.3496%; height: 214.229px;">
<h3>Most frequently asked NetApp Interview Questions</h3>
<ul>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#netpp-storage-performance">How to improve the Netapp storage performance?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#netapp-qtree-creation" target="_blank">How to create NetApp qtree and provide security?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#qtree">What is qtree?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#raid-groups">What are the raid groups Netapp supporting? what is the difference between them?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#iscsi-port-number">What is the iscsi port number?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#ontap7-and-8">What is the difference between ONTAP 7 &amp; 8?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#multiple-paths-in-snapmirror">How do you configure multiple paths in Snapmirror?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#shutdown-filer-rlm">How do you shutdown filer through RLM?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#junction-path">What is the junction path?&nbsp;</a></span></li>
</ul>
</td>
</tr>
</tbody>
</table>
<h2><span style="font-size: 24px; color: #236fa1;"><a id="basic"></a>NetApp Interview Questions and Answers</span></h2>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="netpp-storage-performance"></a>1Q) Ho</span><span style="font-size: 12pt; color: #e67e23;">w to improve the Netapp storage performance?</span></h3>
<p style="text-align: justify;"><span style="color: #000000;"><strong>Ans:</strong></span> There is no direct answer to this question but we shall do it in several ways.</p>
<ul>
<li style="text-align: justify;">If volume/lun present in ATA/SATA hard disk aggregate, then the volume can be migrated to FC/SAS disk aggregate. Either you can use flash cache to improve performance.</li>
<li style="text-align: justify;">For NFS/CIFS instead of accessing from a single interface, multi-mode vif can be configured to get better bandwidth and fault tolerance.</li>
<li style="text-align: justify;">Always advised keeping aggr/vol utilization below 90%.</li>
<li style="text-align: justify;">Avoid doing multiple volume backup in a single point of time.</li>
<li style="text-align: justify;">Aggr/volume/lun reallocation can be done to redistribute the data to multiple disks for better striping performance.</li>
<li style="text-align: justify;">Schedule scrubbing and De-duplication scanning after business hours.</li>
<li style="text-align: justify;">Create multiple loops and connect different types of shelf's to each loop</li>
<li style="text-align: justify;">Avoid mixing up different speeds of the disk and different types of the disk in the same aggregate.</li>
<li style="text-align: justify;">Always keep sufficient spare disk to replace in case of disk failure. Because reconstruction time will take more time and cause negative performance.</li>
<li style="text-align: justify;">Keep the advised version of firmware/software which is recommended by Netapp.</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">2Q) Unable to map lun to solaris server, but <a style="color: #e67e23;" href="https://tekslate.com/sun-solaris-administration-training/" target="_blank" rel="noopener">Solaris</a> server-side no issue. How to resolve the issue?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>FROM STORAGE SIDE:</p>
<ul>
<li style="text-align: justify;">Verify iscsi/fcp license is added in storage</li>
<li style="text-align: justify;">Verify iscsi/fcp session is logged in from server side use below command
<ul>
<li style="text-align: justify;"><strong>Netapp&gt;</strong> igroup show -v</li>
</ul>
</li>
<li style="text-align: justify;">Verify luns are mapped to the corresponding igroup</li>
<li style="text-align: justify;">Verify whether correct host type is mentioned while creating igroup and lun</li>
<li style="text-align: justify;">Verify whether correct iqn/wwpn number is added to igroup</li>
<li style="text-align: justify;">Verify zoning is properly configured from switch side, if it is FCP protocol</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">3Q) How to create the LUN for the Linux server?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>lun create &ndash;s size &ndash;t Linux /vol/vol1/lunname</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="netapp-qtree-creation"></a>4Q) How to create NetApp qtree and provide security?</span></h3>
<p><span style="font-size: 12pt; color: #000000;"><strong style="font-size: medium; text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;"><strong>Netapp&gt;</strong>qtree create /vol/vol1/qtreename</li>
<li style="text-align: justify;"><strong>Netapp&gt;</strong>qtree security /vol/vol1/qtree unix|ntfs|mixed</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">5Q) How to copy volume filer to filer?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>ndmpcopy or snapmirror</p>
<table style="border-collapse: collapse; width: 100%; height: 35px; background-color: #ecf0f1;" border="1px" cellpadding="10">
<tbody>
<tr style="height: 35px;">
<td style="width: 98.3496%; height: 35px; text-align: center;"><em>Do you want to Master NetApp? Then enroll in<a title="NetApp Training" href="https://tekslate.com/netapp-training" target="_blank"><strong> <span style="color: #236fa1;">"NetApp Training"</span></strong></a> This course will help you to master NetApp</em></td>
</tr>
</tbody>
</table>
<h3><span style="font-size: 12pt; color: #e67e23;">6Q) How to resize the aggregate?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong><strong>Netapp&gt; </strong>aggr add AggName no.of.disk</p>
<h3><span style="font-size: 12pt; color: #e67e23;">7Q) How to increase the volume?</span></h3>
<p><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span></strong></p>
<ul>
<li style="text-align: justify;">Traditional Volume</li>
<li style="text-align: justify;">vol add VolName no.of.disk</li>
<li style="text-align: justify;">Flexible Volume</li>
<li style="text-align: justify;">vol size VolName +60g</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="qtree"></a>8Q) What is qtree?</span></h3>
<p><span style="font-size: 12pt;"><strong style="color: #e03e2d; font-size: medium; text-align: justify;"><span style="font-size: 14px;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span></strong></span> </strong></span>qtree is Logical partition of the volume.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">9Q) What is the default snap reserve in aggregate?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>5%</p>
<h3><span style="font-size: 12pt; color: #e67e23;">10Q) What is the snapshot?</span></h3>
<p style="text-align: justify;"><span class="ph"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>A Snapshot copy is a read-only image of a traditional or FlexVol volume, or an aggregate, that captures the state of the file system at a point in time.</span></p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="raid-groups"></a>11Q) What are the raid groups Netapp supporting? what is the difference between them?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>Supported RAID types:</p>
<ul>
<li style="text-align: justify;"><span style="text-align: justify;">Raid-4</span></li>
<li style="text-align: justify;"><span style="text-align: justify;">Raid-6</span></li>
<li style="text-align: justify;"><span style="text-align: justify;">Raid-Dp</span></li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">12Q) What are the protocols you are using?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>Say some protocols like NFS, CIFS, ISCSI and FCP</p>
<p style="text-align: justify;">&nbsp;</p>
<h2 style="text-align: justify;"><span style="font-size: 24px; color: #236fa1;"><a id="storage"></a>Netapp Storage Interview Questions</span></h2>
<h3><span style="font-size: 12pt; color: #e67e23;">13Q) What is the difference between iscsi and fcp?</span></h3>
<p style="text-align: justify;"><span style="color: #000000;"><strong>&nbsp;</strong></span><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>Iscsi-sending block through. iSCSI does not required a dedicated network, it will work on the existing network also. it work's an TCP/IP.</p>
<p style="text-align: justify;">Fcp-send through fibre medium. Required a dedicated FC network.&nbsp; Performance is so high compare to the iSCSI</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="iscsi-port-number"></a>14Q) What is the iscsi port number? </span></h3>
<p><span style="font-size: 12pt;"><span style="color: #000000; font-size: 14px;"><strong>Ans:</strong></span> 3260</span></p>
<h3><span style="font-size: 12pt; color: #e67e23;">15Q) What is the difference between ndmp copy and vol copy?</span></h3>
<p><span style="color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">Ndmp copy &ndash;network data management protocol(used for tape backup)</li>
<li style="text-align: justify;">Vol copy &ndash; is used to transfer volume to same or another aggregate</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="ontap7-and-8"></a>16Q) What is the difference between ONTAP 7 &amp; 8?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>In ONTAP 7 the individual aggregate is limited to a maximum of 16 TB. Where ONTAP 8 supports the new 64-bit aggregate and hence the size of the individual aggregate extends to 100 TB.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">17Q) What are the steps need to perform to configure SnapMirror?</span></h3>
<p style="text-align: justify;"><span style="color: #000000;"><strong>Ans: </strong></span>The SnapMirror configuration process consists of the following four steps:</p>
<p style="text-align: justify;">Install the SnapMirror license on the source and destination systems:</p>
<p style="text-align: justify; padding-left: 30px;"><code>license add &lt;code&gt;</code></p>
<p style="text-align: justify;">On the source, specify the host name or IP address of the SnapMirror destination systems you wish to authorize to replicate this source system.</p>
<p style="text-align: justify; padding-left: 30px;"><code>options snapmirror.access host=dst_hostname1,dst_hostname2</code></p>
<p style="text-align: justify;">For each source volume or qtree to replicate, perform an initial baseline transfer. For volume SnapMirror</p>
<p style="text-align: justify; padding-left: 30px;"><code>restrict the destination volume first: vol restrict dst_vol</code></p>
<p style="text-align: justify;">Then initialize the volume SnapMirror baseline, using the following syntax on the destination:</p>
<p style="text-align: justify; padding-left: 30px;"><code>snapmirror initialize -S src_hostname:src_v</code></p>
<p style="text-align: justify; padding-left: 30px;"><code>oldst_hostname:dst_vol</code></p>
<p style="text-align: justify;">For a qtree SnapMirror baseline transfer, use the following syntax on the destination:</p>
<p style="text-align: justify; padding-left: 30px;"><code>snapmirror initialize &ndash;S src_hostname:/vol/src_vol/src_qtree</code></p>
<p style="text-align: justify; padding-left: 30px;"><code>dst_hostname:/vol/dst_vol/dst_qtree</code></p>
<h3><span style="font-size: 12pt; color: #e67e23;">18Q) While doing baseline transfer you&rsquo;re getting an error message. What are the troubleshooting steps you&rsquo;ll do?</span></h3>
<p><span style="color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">Check both the hosts are reachable by running &ldquo;ping&rdquo; command</li>
<li style="text-align: justify;">Check whether the TCP port 10566 &amp; 10565 are open from firewall</li>
<li style="text-align: justify;">Check whether the snapmirror license are installed in both filers</li>
</ul>
<p>&nbsp;</p>
<h2><span style="font-size: 24px; color: #236fa1;"><a id="coding"></a>NetApp Coding Questions</span></h2>
<h3><span style="font-size: 12pt; color: #e67e23;">19Q) Explain the different types of replication modes?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>The <span style="color: #000000;">SnapMirror Async mode</span> replicates Snapshot copies from a source volume or qtree to a destination. It will support replicating more than 800Kms Long. volume or qtree. Incremental updates are based on a schedule or are performed manually using the snapmirror update command. Async mode works with both volume SnapMirror and qtree SnapMirror.</p>
<p style="text-align: justify;"><span style="color: #000000;">SnapMirror Sync mode</span> replicates writes from a source volume to a destination volume at the same time it is written to the source volume. SnapMirror Sync is used in environments that have zero tolerance for data loss. it will note support more then 300Kms long.</p>
<p style="text-align: justify;"><span style="color: #000000;">SnapMirror Semi-Sync</span> provides a middle-ground solution that keeps the source and destination systems more closely synchronized than Async mode, but with less impact on performance.</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="multiple-paths-in-snapmirror"></a>20Q) How do you configure multiple paths in Snapmirror?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Add a connection name line in the snapmirror.conf file</p>
<p style="text-align: justify;"><code>/etc/snapmirror.conf</code></p>
<p style="text-align: justify;"><code>FAS1_conf = multi (FAS1-e0a,FAS2-e0a) (FAS1-e0b,FAS2-e0b)</code></p>
<h3><span style="font-size: 12pt; color: #e67e23;">21Q) Explain how De-Duplication works?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>In the context of disk storage, De-duplication refers to any algorithm that searches for duplicate data objects (for example, blocks, chunks, files) and discards those duplicates. When duplicate data is detected, it is not retained, but instead, a &ldquo;data pointer&rdquo; is modified so that the storage system references an exact copy of the data object already stored on disk. This De-duplication feature works well with datasets that have lots of duplicated data (for example, full backups).</p>
<h3><span style="font-size: 12pt; color: #e67e23;">22Q) What is the command used to see the amount of space saved using De-duplication?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>df &ndash;s &lt;volume name&gt;</p>
<h3><span style="font-size: 12pt; color: #e67e23;">23Q) Command used to check the progress and status of De-duplication?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>sis status</p>
<h3><span style="font-size: 12pt; color: #e67e23;">24Q) How do you setup the Snapvault Snapshot schedule?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>pri&gt; snapvault snap sched vol1 sv_hourly 22@0-22</p>
<ul>
<li>This schedule is for the home directories volume vol1</li>
<li>Creates hourly Snapshot copies, except 11:00 p.m.</li>
<li>Keeps nearly a full day of hourly copies</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">25Q) What is metadata? </span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Metadata is defined as data providing information about one or more aspects of the data,</p>
<ul>
<li style="text-align: justify;">Inode file</li>
<li style="text-align: justify;">The used block bitmap file</li>
<li style="text-align: justify;">The free block bitmap file</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="shutdown-filer-rlm"></a>26Q) How do you shutdown filer through RLM?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>ssh &ldquo;rlm ip address&rdquo;</p>
<p style="text-align: justify;">RLM_Netapp&gt; system power on</p>
<h3><span style="font-size: 12pt; color: #e67e23;">27Q) After creating LUN (iSCSI) &amp; mapped the LUN to a particular igroup, the client not able to access the LUN. What are the trouble shooting steps you take?</span></h3>
<p><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span></strong></p>
<ul>
<li style="text-align: justify;">Check whether IQN number specified is correct</li>
<li style="text-align: justify;">Check whether the created LUN is in &ldquo;restrict&rdquo; mode</li>
<li style="text-align: justify;">Check the iscsi status</li>
<li style="text-align: justify;">Un-map and map the LUN once again</li>
<li style="text-align: justify;">Check Network connectivity communication</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">28Q) In CIFS how do you check who is using the most?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>cifs top</p>
<h3><span style="font-size: 12pt; color: #e67e23;">29Q) How to check cifs performance statistics?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>cifs stat</p>
<h3><span style="font-size: 12pt; color: #e67e23;">30Q) What do you do if a customer reports a particular CIFS share is responding slow?</span></h3>
<p><span style="color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">Check the r/w using "cifs stat" &amp; "sysstat -x 1".</li>
<li style="text-align: justify;">If disk &amp; cpu utilization is more than then the problem is with filer side only.</li>
<li style="text-align: justify;">CPU utilization will be high if more disk r/w time, i.e.,during tape backup &amp; also during scrub activities.</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">31Q) what is the degraded mode? If you don't have parity for failed disks then?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>If the spare disk is not added within 24hours, then the filer will be shut down automatically to avoid further disk failures and data loss.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">32Q) Did you ever do on tap upgrade? From which version to which version and for what reason?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Yes I have done ontap upgrade from version 7.2.6.1 to 7.3.3 due to a lot of bugs in the old version.</p>
<p style="text-align: justify;"><span style="color: #e67e23;"><strong> 33Q) . How do you create a lun?</strong></span></p>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span></strong> lun create -s &lt;lunsize&gt; -t &lt;host type&gt; &lt;lunpath&gt;</p>
<h3><span style="font-size: 12pt; color: #e67e23;">34Q) How do you monitor the filers?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Using DFM(Data Fabric Manager) or also using SNMP you can monitor the filer. Using any monitoring systems like .i.e.Nagios</p>
<h3><span style="font-size: 12pt; color: #e67e23;">35Q) What are the prerequisites for a cluster?</span></h3>
<p><span style="font-size: 14px; color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">cluster interconnect cable should be connected.</li>
<li style="text-align: justify;">shelf connect should be properly done for both the controllers with Path1 and Path2</li>
<li style="text-align: justify;">cluster license should be enabled on both the nodes</li>
<li style="text-align: justify;">Interfaces should be properly configured for failover</li>
<li style="text-align: justify;">the cluster should be enabled</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">36Q) What is the diff bet cf takeover and cf force takeover?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>If partner shelf power is off if you try to take over it will not take. if you do as force using (-f) it will work</p>
<h3><span style="font-size: 12pt; color: #e67e23;">37Q) What is LIF?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>LIF ( Logical interface): As the name suggests it's a logical interface that is created from the physical interface of NetApp controllers.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">38Q) What is VServer?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>A Vserver is defined as a logical container that holds the volumes. A 7 mode vfiler is called as a vserver in Clustered mode.</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="junction-path"></a>39Q) What is the junction path?&nbsp;</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>This is a new term in cluster mode and this is used for mounting. Volume junctions are a way to join individual volumes together into a single, logical namespace to enable data access to NAS <span class="skimlinks-unlinked">clients.</span></p>
<h3><span style="font-size: 12pt; color: #e67e23;">40Q) What are infinite volumes?</span></h3>
<p style="text-align: justify;"><span class="skimlinks-unlinked"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>NetApp Infinite Volume is a software abstraction hosted over clustered Data ONTAP</span></p>e:T5e72,<p><span style="font-size: 14px;">Are you planning to attend an interview for the NetApp role but confused on how to crack that interview and also what would be the most probable NetApp Interview Questions that the interviewer may ask? Well, you have reached the right place. Tekslate has collected the most frequently asked <strong>NetApp Interview Questions</strong> which are often asked in multiple interviews.</span></p>
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<td style="width: 98.3496%; height: 214.229px;">
<h3>Most frequently asked NetApp Interview Questions</h3>
<ul>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#netpp-storage-performance">How to improve the Netapp storage performance?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#netapp-qtree-creation" target="_blank">How to create NetApp qtree and provide security?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#qtree">What is qtree?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#raid-groups">What are the raid groups Netapp supporting? what is the difference between them?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#iscsi-port-number">What is the iscsi port number?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#ontap7-and-8">What is the difference between ONTAP 7 &amp; 8?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#multiple-paths-in-snapmirror">How do you configure multiple paths in Snapmirror?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#shutdown-filer-rlm">How do you shutdown filer through RLM?</a></span></li>
<li><span style="color: #236fa1;"><a style="color: #236fa1;" href="#junction-path">What is the junction path?&nbsp;</a></span></li>
</ul>
</td>
</tr>
</tbody>
</table>
<h2><span style="font-size: 24px; color: #236fa1;"><a id="basic"></a>NetApp Interview Questions and Answers</span></h2>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="netpp-storage-performance"></a>1Q) Ho</span><span style="font-size: 12pt; color: #e67e23;">w to improve the Netapp storage performance?</span></h3>
<p style="text-align: justify;"><span style="color: #000000;"><strong>Ans:</strong></span> There is no direct answer to this question but we shall do it in several ways.</p>
<ul>
<li style="text-align: justify;">If volume/lun present in ATA/SATA hard disk aggregate, then the volume can be migrated to FC/SAS disk aggregate. Either you can use flash cache to improve performance.</li>
<li style="text-align: justify;">For NFS/CIFS instead of accessing from a single interface, multi-mode vif can be configured to get better bandwidth and fault tolerance.</li>
<li style="text-align: justify;">Always advised keeping aggr/vol utilization below 90%.</li>
<li style="text-align: justify;">Avoid doing multiple volume backup in a single point of time.</li>
<li style="text-align: justify;">Aggr/volume/lun reallocation can be done to redistribute the data to multiple disks for better striping performance.</li>
<li style="text-align: justify;">Schedule scrubbing and De-duplication scanning after business hours.</li>
<li style="text-align: justify;">Create multiple loops and connect different types of shelf's to each loop</li>
<li style="text-align: justify;">Avoid mixing up different speeds of the disk and different types of the disk in the same aggregate.</li>
<li style="text-align: justify;">Always keep sufficient spare disk to replace in case of disk failure. Because reconstruction time will take more time and cause negative performance.</li>
<li style="text-align: justify;">Keep the advised version of firmware/software which is recommended by Netapp.</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">2Q) Unable to map lun to solaris server, but <a style="color: #e67e23;" href="https://tekslate.com/sun-solaris-administration-training/" target="_blank" rel="noopener">Solaris</a> server-side no issue. How to resolve the issue?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>FROM STORAGE SIDE:</p>
<ul>
<li style="text-align: justify;">Verify iscsi/fcp license is added in storage</li>
<li style="text-align: justify;">Verify iscsi/fcp session is logged in from server side use below command
<ul>
<li style="text-align: justify;"><strong>Netapp&gt;</strong> igroup show -v</li>
</ul>
</li>
<li style="text-align: justify;">Verify luns are mapped to the corresponding igroup</li>
<li style="text-align: justify;">Verify whether correct host type is mentioned while creating igroup and lun</li>
<li style="text-align: justify;">Verify whether correct iqn/wwpn number is added to igroup</li>
<li style="text-align: justify;">Verify zoning is properly configured from switch side, if it is FCP protocol</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">3Q) How to create the LUN for the Linux server?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>lun create &ndash;s size &ndash;t Linux /vol/vol1/lunname</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="netapp-qtree-creation"></a>4Q) How to create NetApp qtree and provide security?</span></h3>
<p><span style="font-size: 12pt; color: #000000;"><strong style="font-size: medium; text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;"><strong>Netapp&gt;</strong>qtree create /vol/vol1/qtreename</li>
<li style="text-align: justify;"><strong>Netapp&gt;</strong>qtree security /vol/vol1/qtree unix|ntfs|mixed</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">5Q) How to copy volume filer to filer?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>ndmpcopy or snapmirror</p>
<table style="border-collapse: collapse; width: 100%; height: 35px; background-color: #ecf0f1;" border="1px" cellpadding="10">
<tbody>
<tr style="height: 35px;">
<td style="width: 98.3496%; height: 35px; text-align: center;"><em>Do you want to Master NetApp? Then enroll in<a title="NetApp Training" href="https://tekslate.com/netapp-training" target="_blank"><strong> <span style="color: #236fa1;">"NetApp Training"</span></strong></a> This course will help you to master NetApp</em></td>
</tr>
</tbody>
</table>
<h3><span style="font-size: 12pt; color: #e67e23;">6Q) How to resize the aggregate?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong><strong>Netapp&gt; </strong>aggr add AggName no.of.disk</p>
<h3><span style="font-size: 12pt; color: #e67e23;">7Q) How to increase the volume?</span></h3>
<p><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span></strong></p>
<ul>
<li style="text-align: justify;">Traditional Volume</li>
<li style="text-align: justify;">vol add VolName no.of.disk</li>
<li style="text-align: justify;">Flexible Volume</li>
<li style="text-align: justify;">vol size VolName +60g</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="qtree"></a>8Q) What is qtree?</span></h3>
<p><span style="font-size: 12pt;"><strong style="color: #e03e2d; font-size: medium; text-align: justify;"><span style="font-size: 14px;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span></strong></span> </strong></span>qtree is Logical partition of the volume.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">9Q) What is the default snap reserve in aggregate?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>5%</p>
<h3><span style="font-size: 12pt; color: #e67e23;">10Q) What is the snapshot?</span></h3>
<p style="text-align: justify;"><span class="ph"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>A Snapshot copy is a read-only image of a traditional or FlexVol volume, or an aggregate, that captures the state of the file system at a point in time.</span></p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="raid-groups"></a>11Q) What are the raid groups Netapp supporting? what is the difference between them?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>Supported RAID types:</p>
<ul>
<li style="text-align: justify;"><span style="text-align: justify;">Raid-4</span></li>
<li style="text-align: justify;"><span style="text-align: justify;">Raid-6</span></li>
<li style="text-align: justify;"><span style="text-align: justify;">Raid-Dp</span></li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">12Q) What are the protocols you are using?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>Say some protocols like NFS, CIFS, ISCSI and FCP</p>
<p style="text-align: justify;">&nbsp;</p>
<h2 style="text-align: justify;"><span style="font-size: 24px; color: #236fa1;"><a id="storage"></a>Netapp Storage Interview Questions</span></h2>
<h3><span style="font-size: 12pt; color: #e67e23;">13Q) What is the difference between iscsi and fcp?</span></h3>
<p style="text-align: justify;"><span style="color: #000000;"><strong>&nbsp;</strong></span><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>Iscsi-sending block through. iSCSI does not required a dedicated network, it will work on the existing network also. it work's an TCP/IP.</p>
<p style="text-align: justify;">Fcp-send through fibre medium. Required a dedicated FC network.&nbsp; Performance is so high compare to the iSCSI</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="iscsi-port-number"></a>14Q) What is the iscsi port number? </span></h3>
<p><span style="font-size: 12pt;"><span style="color: #000000; font-size: 14px;"><strong>Ans:</strong></span> 3260</span></p>
<h3><span style="font-size: 12pt; color: #e67e23;">15Q) What is the difference between ndmp copy and vol copy?</span></h3>
<p><span style="color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">Ndmp copy &ndash;network data management protocol(used for tape backup)</li>
<li style="text-align: justify;">Vol copy &ndash; is used to transfer volume to same or another aggregate</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="ontap7-and-8"></a>16Q) What is the difference between ONTAP 7 &amp; 8?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d;"><span style="color: #000000;">Ans:</span> </strong>In ONTAP 7 the individual aggregate is limited to a maximum of 16 TB. Where ONTAP 8 supports the new 64-bit aggregate and hence the size of the individual aggregate extends to 100 TB.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">17Q) What are the steps need to perform to configure SnapMirror?</span></h3>
<p style="text-align: justify;"><span style="color: #000000;"><strong>Ans: </strong></span>The SnapMirror configuration process consists of the following four steps:</p>
<p style="text-align: justify;">Install the SnapMirror license on the source and destination systems:</p>
<p style="text-align: justify; padding-left: 30px;"><code>license add &lt;code&gt;</code></p>
<p style="text-align: justify;">On the source, specify the host name or IP address of the SnapMirror destination systems you wish to authorize to replicate this source system.</p>
<p style="text-align: justify; padding-left: 30px;"><code>options snapmirror.access host=dst_hostname1,dst_hostname2</code></p>
<p style="text-align: justify;">For each source volume or qtree to replicate, perform an initial baseline transfer. For volume SnapMirror</p>
<p style="text-align: justify; padding-left: 30px;"><code>restrict the destination volume first: vol restrict dst_vol</code></p>
<p style="text-align: justify;">Then initialize the volume SnapMirror baseline, using the following syntax on the destination:</p>
<p style="text-align: justify; padding-left: 30px;"><code>snapmirror initialize -S src_hostname:src_v</code></p>
<p style="text-align: justify; padding-left: 30px;"><code>oldst_hostname:dst_vol</code></p>
<p style="text-align: justify;">For a qtree SnapMirror baseline transfer, use the following syntax on the destination:</p>
<p style="text-align: justify; padding-left: 30px;"><code>snapmirror initialize &ndash;S src_hostname:/vol/src_vol/src_qtree</code></p>
<p style="text-align: justify; padding-left: 30px;"><code>dst_hostname:/vol/dst_vol/dst_qtree</code></p>
<h3><span style="font-size: 12pt; color: #e67e23;">18Q) While doing baseline transfer you&rsquo;re getting an error message. What are the troubleshooting steps you&rsquo;ll do?</span></h3>
<p><span style="color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">Check both the hosts are reachable by running &ldquo;ping&rdquo; command</li>
<li style="text-align: justify;">Check whether the TCP port 10566 &amp; 10565 are open from firewall</li>
<li style="text-align: justify;">Check whether the snapmirror license are installed in both filers</li>
</ul>
<p>&nbsp;</p>
<h2><span style="font-size: 24px; color: #236fa1;"><a id="coding"></a>NetApp Coding Questions</span></h2>
<h3><span style="font-size: 12pt; color: #e67e23;">19Q) Explain the different types of replication modes?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>The <span style="color: #000000;">SnapMirror Async mode</span> replicates Snapshot copies from a source volume or qtree to a destination. It will support replicating more than 800Kms Long. volume or qtree. Incremental updates are based on a schedule or are performed manually using the snapmirror update command. Async mode works with both volume SnapMirror and qtree SnapMirror.</p>
<p style="text-align: justify;"><span style="color: #000000;">SnapMirror Sync mode</span> replicates writes from a source volume to a destination volume at the same time it is written to the source volume. SnapMirror Sync is used in environments that have zero tolerance for data loss. it will note support more then 300Kms long.</p>
<p style="text-align: justify;"><span style="color: #000000;">SnapMirror Semi-Sync</span> provides a middle-ground solution that keeps the source and destination systems more closely synchronized than Async mode, but with less impact on performance.</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="multiple-paths-in-snapmirror"></a>20Q) How do you configure multiple paths in Snapmirror?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Add a connection name line in the snapmirror.conf file</p>
<p style="text-align: justify;"><code>/etc/snapmirror.conf</code></p>
<p style="text-align: justify;"><code>FAS1_conf = multi (FAS1-e0a,FAS2-e0a) (FAS1-e0b,FAS2-e0b)</code></p>
<h3><span style="font-size: 12pt; color: #e67e23;">21Q) Explain how De-Duplication works?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>In the context of disk storage, De-duplication refers to any algorithm that searches for duplicate data objects (for example, blocks, chunks, files) and discards those duplicates. When duplicate data is detected, it is not retained, but instead, a &ldquo;data pointer&rdquo; is modified so that the storage system references an exact copy of the data object already stored on disk. This De-duplication feature works well with datasets that have lots of duplicated data (for example, full backups).</p>
<h3><span style="font-size: 12pt; color: #e67e23;">22Q) What is the command used to see the amount of space saved using De-duplication?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>df &ndash;s &lt;volume name&gt;</p>
<h3><span style="font-size: 12pt; color: #e67e23;">23Q) Command used to check the progress and status of De-duplication?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>sis status</p>
<h3><span style="font-size: 12pt; color: #e67e23;">24Q) How do you setup the Snapvault Snapshot schedule?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>pri&gt; snapvault snap sched vol1 sv_hourly 22@0-22</p>
<ul>
<li>This schedule is for the home directories volume vol1</li>
<li>Creates hourly Snapshot copies, except 11:00 p.m.</li>
<li>Keeps nearly a full day of hourly copies</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">25Q) What is metadata? </span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Metadata is defined as data providing information about one or more aspects of the data,</p>
<ul>
<li style="text-align: justify;">Inode file</li>
<li style="text-align: justify;">The used block bitmap file</li>
<li style="text-align: justify;">The free block bitmap file</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="shutdown-filer-rlm"></a>26Q) How do you shutdown filer through RLM?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>ssh &ldquo;rlm ip address&rdquo;</p>
<p style="text-align: justify;">RLM_Netapp&gt; system power on</p>
<h3><span style="font-size: 12pt; color: #e67e23;">27Q) After creating LUN (iSCSI) &amp; mapped the LUN to a particular igroup, the client not able to access the LUN. What are the trouble shooting steps you take?</span></h3>
<p><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span></strong></p>
<ul>
<li style="text-align: justify;">Check whether IQN number specified is correct</li>
<li style="text-align: justify;">Check whether the created LUN is in &ldquo;restrict&rdquo; mode</li>
<li style="text-align: justify;">Check the iscsi status</li>
<li style="text-align: justify;">Un-map and map the LUN once again</li>
<li style="text-align: justify;">Check Network connectivity communication</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">28Q) In CIFS how do you check who is using the most?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>cifs top</p>
<h3><span style="font-size: 12pt; color: #e67e23;">29Q) How to check cifs performance statistics?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>cifs stat</p>
<h3><span style="font-size: 12pt; color: #e67e23;">30Q) What do you do if a customer reports a particular CIFS share is responding slow?</span></h3>
<p><span style="color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">Check the r/w using "cifs stat" &amp; "sysstat -x 1".</li>
<li style="text-align: justify;">If disk &amp; cpu utilization is more than then the problem is with filer side only.</li>
<li style="text-align: justify;">CPU utilization will be high if more disk r/w time, i.e.,during tape backup &amp; also during scrub activities.</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">31Q) what is the degraded mode? If you don't have parity for failed disks then?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>If the spare disk is not added within 24hours, then the filer will be shut down automatically to avoid further disk failures and data loss.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">32Q) Did you ever do on tap upgrade? From which version to which version and for what reason?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Yes I have done ontap upgrade from version 7.2.6.1 to 7.3.3 due to a lot of bugs in the old version.</p>
<p style="text-align: justify;"><span style="color: #e67e23;"><strong> 33Q) . How do you create a lun?</strong></span></p>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span></strong> lun create -s &lt;lunsize&gt; -t &lt;host type&gt; &lt;lunpath&gt;</p>
<h3><span style="font-size: 12pt; color: #e67e23;">34Q) How do you monitor the filers?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>Using DFM(Data Fabric Manager) or also using SNMP you can monitor the filer. Using any monitoring systems like .i.e.Nagios</p>
<h3><span style="font-size: 12pt; color: #e67e23;">35Q) What are the prerequisites for a cluster?</span></h3>
<p><span style="font-size: 14px; color: #000000;"><strong style="text-align: justify;">Ans:</strong></span></p>
<ul>
<li style="text-align: justify;">cluster interconnect cable should be connected.</li>
<li style="text-align: justify;">shelf connect should be properly done for both the controllers with Path1 and Path2</li>
<li style="text-align: justify;">cluster license should be enabled on both the nodes</li>
<li style="text-align: justify;">Interfaces should be properly configured for failover</li>
<li style="text-align: justify;">the cluster should be enabled</li>
</ul>
<h3><span style="font-size: 12pt; color: #e67e23;">36Q) What is the diff bet cf takeover and cf force takeover?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>If partner shelf power is off if you try to take over it will not take. if you do as force using (-f) it will work</p>
<h3><span style="font-size: 12pt; color: #e67e23;">37Q) What is LIF?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>LIF ( Logical interface): As the name suggests it's a logical interface that is created from the physical interface of NetApp controllers.</p>
<h3><span style="font-size: 12pt; color: #e67e23;">38Q) What is VServer?</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>A Vserver is defined as a logical container that holds the volumes. A 7 mode vfiler is called as a vserver in Clustered mode.</p>
<h3><span style="font-size: 12pt; color: #e67e23;"><a id="junction-path"></a>39Q) What is the junction path?&nbsp;</span></h3>
<p style="text-align: justify;"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>This is a new term in cluster mode and this is used for mounting. Volume junctions are a way to join individual volumes together into a single, logical namespace to enable data access to NAS <span class="skimlinks-unlinked">clients.</span></p>
<h3><span style="font-size: 12pt; color: #e67e23;">40Q) What are infinite volumes?</span></h3>
<p style="text-align: justify;"><span class="skimlinks-unlinked"><strong style="color: #e03e2d; text-align: justify;"><span style="color: #000000;">Ans:</span> </strong>NetApp Infinite Volume is a software abstraction hosted over clustered Data ONTAP</span></p>f:{"id":1,"author_designation":"Content Writer","author_name":"TekSlate","author_bio":"<p>TekSlate is the best online training provider in delivering world-class IT skills to individuals and corporates from all parts of the globe. We are proven experts in accumulating every need of an IT skills upgrade aspirant and have delivered excellent services. We aim to bring you all the essentials to learn and master new technologies in the market with our articles, blogs, and videos. Build your career success with us, enhancing most in-demand skills in the market.</p>","author_img":"https://tekslateassets.s3.amazonaws.com/images/logo.svg","author_url":"tekslate","article_count":"0","field_of_intrest":"","status":1}
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