Interview Questions.

Question 1. How To Improve The Netapp Storage Performance?

Answer :

There isn't any direct solution for this question however we shall do it in numerous manner. 

If extent/lun found in ATA/SATA harddrive mixture, then the quantity can be migrated to FC/SAS disk combination. Either you could use flash cache to enhance overall performance.
For NFS/CIFS in preference to getting access to from single interface, multi mode vif may be configured to get better bandwidth and fault tolerance.
Always recommended to maintain aggr/vol usage below 90%.
Avoid doing more than one quantity backup in unmarried point of time.
Aggr/volume/lun reallocation may be achieved to re–distribute the facts to more than one disk for higher striping overall performance.
Schedule scrubbing and De-duplication scanning after enterprise hours.
Create a couple of loops and join exclusive varieties of shelf's to each loop
Avoid mixing up exclusive speeds of disk and exceptional varieties of disk in a identical aggregate.
Always keep sufficient spare disk to update in case of disk failure. Because reconstruction time will take more time and cause terrible performance.
Keep the cautioned version of firmware/software which is suggested via Netapp.
Question 2. Unable To Map Lun To Solaris Server, But Solaris Server Side No Issue. How To Resolve The Issue?

Answer :

FROM STORAGE SIDE:

Verify iscsi/fcp license is delivered in storage 
Verify iscsi/fcp consultation is logged in from server aspect use command Netapp> igroup display -v 
Verify luns are mapped to the corresponding igroup 
Verify whether or not correct host type is stated at the same time as developing igroup and lun 
Verify whether or not correct iqn/wwpn wide variety is delivered to igroup 
Verify zoning is properly configured from transfer side, if it is FCP protocol
Cisco Interview Questions
Question three. How To Create The Lun For Linux Server?

Answer :

lun create –s length –t linux /vol/vol1/lunname 

Question four. How To Create Qtree And Provide The Security?

Answer :

Netapp>qtree create /vol/vol1/qtreename 
Netapp>qtree safetycombined

Question 5. How To Copy Volume Filer To Filer?

Answer :

ndmpcopy or snapmirror

CWNA (Certified Wireless Network Administrator) Interview Questions
Question 6. How To Resize The Aggregate?

Answer :

Netapp> aggr add AggName no.Of.Disk

Question 7. How To Increase The Volume?

Answer :

Traditional Volume: vol upload VolName no.Of.Disk

Flexible Volume: vol size VolName +60g

Cisco Nexus switches Interview Questions
Question eight. What Is Qtree?

Answer :

qtree is Logical partition of the quantity. 

Question nine. What Is The Default Snap Reserve In Aggregate?

Answer :

five%

Automatic Storage Management (ASM) Interview Questions
Question 10. What Is Snapshot?

Answer :

A Snapshot copy is a read-best picture of a conventional or FlexVol extent, or an combination, that captures the nation of the record device at a point in time.

Question eleven. What Are The Raid Groups Netapp Supporting?, What Is The Difference Between Them?

Answer :

Supported RAID sorts:

Raid-four
Raid-6 
Raid-Dp
Storage Area Network Interview Questions
Question 12. What Are The Protocols You Are Using?

Answer :

Say some protocols like NFS, CIFS, ISCSI and FCP

Cisco Interview Questions
Question 13. What Is The Difference Between Iscsi And Fcp?

Answer :

Iscsi-sending block thru. ISCSI does now not required committed network, it will paintings on existing network also. It work's an TCP/IP.

Fcp-send through fibre medium. Required an committed FC community.  Performance is so high compare to the iSCSI

Question 14. What Is The Iscsi Port Number?

Answer :

3260

Question 15. What Is The Difference Between Ndmp Copy And Vol Copy?

Answer :

Ndmp replica:network information management protocol(used for tape backup)

Vol reproduction: is used to switch extent to same or some other mixture 

Network Troubleshooting Interview Questions
Question 16. What Is The Difference Between Ontap 7 & eight?

Answer :

In ONTAP 7 the individual mixture is constrained to maximum of 16 TB. Where ONTAP eight supports the brand new sixty four bit aggregate and subsequently the scale of the character combination extends to 100 TB.

Question 17. While Doing Baseline Transfer You’re Getting Error Message. What Are The Troubleshooting Steps You’ll Do?

Answer :

Check both the hosts are reachable by way of walking “ping” command
Check whether the TCP port 10566 & 10565 are open from firewall
Check whether or not the snapmirror license are hooked up in each filers
Windows Workflow Foundation Interview Questions
Question 18. Explain The Different Types Of Replication Modes..?

Answer :

SnapMirror Async mode replicates Snapshot copies from a supply quantity or qtree to a vacation spot. It will guide to replicate extra than 800Kms Long. Volume or qtree. Incremental updates are based totally on a schedule or are done manually the usage of the snapmirror replace command. Async mode works with both volume SnapMirror and qtree SnapMirror.

SnapMirror Sync mode replicates writes from a supply quantity to a destination extent on the identical time it is written to the supply extent. SnapMirror Sync is utilized in environments which have zero tolerance for records loss. It's going to notice assist greater then 300Kms lengthy.

SnapMirror Semi-Sync presents a center-ground solution that keeps the source and vacation spot structures more carefully synchronized than Async mode, however with less effect on performance.

CWNA (Certified Wireless Network Administrator) Interview Questions
Question 19. How Do You Configure Multiple Path In Snapmirror?

Answer :

Add a connection name line within the snapmirror.Conf file

/and so forth/snapmirror.Conf
FAS1_conf = multi (FAS1-e0a,FAS2-e0a) (FAS1-e0b,FAS2-e0b)

Question 20. Explain How De-duplication Works?

Answer :

In the context of disk garage, De-duplication refers to any algorithm that searches for replica statistics items (as an instance, blocks, chunks, files) and discards those duplicates. When replica data is detected, it isn't retained, however as an alternative a “statistics pointer” is modified so that the garage device references an exact reproduction of the information object already saved on disk. This De-duplication function works well with datasets which have lots of duplicated date (as an example, complete backups). 

Question 21. What Is The Command Used To See Amount Of Space Saved Using De-duplication?

Answer :

df –s <volume name>

Question 22. Command Used To Check Progress And Status Of De-duplication?

Answer :

sis repute

Question 23. How Do You Setup Snapvault Snapshot Schedule?

Answer :

pri> snapvault snap sched vol1 sv_hourly 22@0-22

This agenda is for the home directories volume vol1
Creates hourly Snapshot copies, except eleven:00 p.M.
Keeps almost a full day of hourly copies
Question 24. What Is Metadata?

Answer :

Metadata is defined as records presenting information about one or more components of the statistics,

Inode document
Used block bitmap document
Free block bitmap report
Cisco Nexus switches Interview Questions
Question 25. How Do You Shutdown Filer Through Rlm?

Answer :

ssh “rlm ip deal with”
RLM_Netapp> machine power on

Question 26. After Creating Lun (iscsi) & Mapped The Lun To Particular Igroup, The Client Not Able To Access The Lun. What Are The Trouble Shooting Steps You Take?

Answer :

Check whether or not IQN wide variety detailed is accurate
Check whether or not the created LUN is in “restrict” mode
Check the iscsi repute
Un-map and map the LUN once more
Check Network connectivity conversation

Question 27. In Cifs How Do You Check Who Is Using Most?

Answer :

cifs top

Automatic Storage Management (ASM) Interview Questions
Question 28. How To Check Cifs Performance Statistics.?

Answer :

cifs stat

Question 29. What Do You Do If A Customer Reports A Particular Cifs Share Is Responding Slow?

Answer :

Check the r/w the use of "cifs stat" & "sysstat -x 1".
If disk & cpu usage is extra then trouble is with filer aspect best.
CPU utilization will be high if more disk r/w time, i.E.,for the duration of tape backup & also throughout scrub sports.
Question 30. What Is Degraded Mode? If You Don't Have Parity For Failed Disks Then?

Answer :

If the spare disk is not brought inside 24hours,then filer could be shutdown automatically to avoid similarly disk disasters and facts loss.

Question 31. Did You Ever Do Ontap Upgrade? From Which Version To Which Version And For What Reason?

Answer :

Yes i have carried out ontap improve from model 7.2.6.1 to 7.3.3 due to lot of insects in old version.

Question 32. How Do You Create A Lun ?

Answer :

lun create -s <lunsize> -t <host type> <lunpath>

Question 33. How Do You Monitor The Filers?

Answer :

Using DFM(Data Fabric Manager) or also the usage of SNMP you may monitor the filer. Using any tracking structures like .I.E.Nagios

Storage Area Network Interview Questions
Question 34. What Are The Prerequisites For A Cluster?

Answer :

cluster interconnect cable must be linked.
Shelf connect ought to be nicely finished for both the controllers with Path1 and Path2
cluster license need to be enabled on each the nodes
Interfaces need to be nicely configured for fail over
cluster have to be enabled
Question 35. What Is The Diff Bet Cf Takeover And Cf Force Takeover?

Answer :

If partner shelf electricity is off, in case you try and takeover it will now not take. If you do as pressure the use of (-f) it'll work

Question 36. What Is Lif.?

Answer :

LIF ( Logical interface) : As the name advocate its a logical interface which is produced from bodily interface of NetApp controllers.

Network Troubleshooting Interview Questions
Question 37. What Is Vserver..?

Answer :

A Vserver is defined as logical container which holds the volumes. A 7 mode vfiler is known as as a vserver in Clustered mode . 

Question 38. What Is Junction Path..?

Answer :

This is a brand new time period in cluster mode and that is used for mounting.Volume junctions are a manner to enroll in individual volumes collectively right into a unmarried, logical namespace to allow statistics access to NAS clients.

Question 39. What Is Infinite Volumes..?

Answer :

NetApp Infinite Volume is a software abstraction hosted over clustered Data ONTAP

Question forty. What Is The Difference Between Nas & San?

Answer :

The important difference among NAS and SAN is that NAS is an Ethernet primarily based while SAN is Fabric based.

NAS- Network Attached Storage:

It enters facts on record stage and develops space to host inside the shape of folder of shared networks.

SAN- Storage Area Network:

It enters statistics on block level and develops area to host within the form of a disk.

Windows Workflow Foundation Interview Questions