9th April, 2021
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 NetApp Interview Questions which are often asked in multiple interviews.
Most frequently asked NetApp Interview Questions
Ans: There is no direct answer to this question but we shall do it in several ways.
Ans: FROM STORAGE SIDE:
Ans: lun create –s size –t Linux /vol/vol1/lunname
Ans: ndmpcopy or snapmirror
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Ans: Netapp> aggr add AggName no.of.disk
Ans: qtree is Logical partition of the volume.
Ans: 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.
Ans: Supported RAID types:
Ans: Say some protocols like NFS, CIFS, ISCSI and FCP
Ans: 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.
Fcp-send through fibre medium. Required a dedicated FC network. Performance is so high compare to the iSCSI
Ans: 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.
The SnapMirror configuration process consists of the following four steps:
Install the SnapMirror license on the source and destination systems:
license add <code>
On the source, specify the host name or IP address of the SnapMirror destination systems you wish to authorize to replicate this source system.
options snapmirror.access host=dst_hostname1,dst_hostname2
For each source volume or qtree to replicate, perform an initial baseline transfer. For volume SnapMirror
restrict the destination volume first: vol restrict dst_vol
Then initialize the volume SnapMirror baseline, using the following syntax on the destination:
snapmirror initialize -S src_hostname:src_v
For a qtree SnapMirror baseline transfer, use the following syntax on the destination:
snapmirror initialize –S src_hostname:/vol/src_vol/src_qtree
Ans: The SnapMirror Async mode 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.
SnapMirror Sync mode 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.
SnapMirror Semi-Sync provides a middle-ground solution that keeps the source and destination systems more closely synchronized than Async mode, but with less impact on performance.
Ans: Add a connection name line in the snapmirror.conf file
FAS1_conf = multi (FAS1-e0a,FAS2-e0a) (FAS1-e0b,FAS2-e0b)
Ans: 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 “data pointer” 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).
Ans: df –s <volume name>
Ans: sis status
Ans: pri> snapvault snap sched vol1 sv_hourly 22@0-22
Ans: Metadata is defined as data providing information about one or more aspects of the data,
Ans: ssh “rlm ip address”
RLM_Netapp> system power on
Ans: cifs top
Ans: cifs stat
Ans: 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.
Ans: Yes I have done ontap upgrade from version 220.127.116.11 to 7.3.3 due to a lot of bugs in the old version.
33Q) . How do you create a lun?
Ans: lun create -s <lunsize> -t <host type> <lunpath>
Ans: Using DFM(Data Fabric Manager) or also using SNMP you can monitor the filer. Using any monitoring systems like .i.e.Nagios
Ans: 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
Ans: LIF ( Logical interface): As the name suggests it's a logical interface that is created from the physical interface of NetApp controllers.
Ans: A Vserver is defined as a logical container that holds the volumes. A 7 mode vfiler is called as a vserver in Clustered mode.
Ans: 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
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