95587594 Netapp Interview Qa1

8/12/2019 95587594 Netapp Interview Qa1

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1.Boot Sequence of Netapp Storage2.What options comes during Setup Script of filer and when can we use setup script.3.What is the command for Volume and lun resize4.What is difference between version -v and version -b command5.what is the default snapshot schedule time for volume.

6.How many snapshot you can configure in a volume7.How to check snapshot reserve value8.Command for restoring a file from snapshot9.what are the steps to configure snapmirror and the files10. How will you resize a snapmirror volume step by step11.What is the function of Quisce in snapmirror12.What is difference between snapmirror and snapvault13.What is RLM and BMC and what is the syntax to login from RLM and BMC14. What is the role of /etc/rc and /etc/exports file in Data Ontap15.What is WAFL and how Data OnTap writes data on disk.16.What is default raid Level for Data Ontap and define the default raid17.What will you do incase a disk goes bad18.Steps to upgrade data Ontape Software and Disk firmware upgrade19.Command to terminate the CIFS and NFS client20.What are the commands to check system performance and syntax.

1.Boot Sequence of Netapp Storage

Normal Boot if you do not press CTRL-C during boot*Loads the Data Ontape kernell on Physical memory*Checks root Volume on physical Disk* Data Ontape kernell loaded and it checks following files from /etc ( /etc/rc , /etc/registry , /etc/Hosts)

additional files can be read depend on license

purchase* For special boot menu (Recover menu) you need to type CTRL-C during boot

2.What options comes during Setup Script of filer and when can we use setup script.

setup script runs during intial setup and also can be run manually for changing configuration

*Options : Host name/IP address,location/timezone/Language, DNS/WINS server name/IP,ETHconfiguretion IP, No. of disk to add/HTTP enable option etc.

* Incase you are running setup for configuration change than it will install new updated version of/etc/hosts ...resolve.conf.. rc...hosts.equiv..dgatways and this configuration will change once you willreboot the filer

3.What is the command for Volume and lun resize#vol size -/+

4.What is difference between version -v and version -b commandversion - v shows current version of Ontap system and version -b shows DataOntap version on theflash card

5.what is the default snapshot schedule time for volume.
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0 2 6@8 12 16 20 (where 0 2 6 is weekly nightly and hourly and 8,12,16,20 are time in 24 hr format

6.How many snapshot you can configure in a volume2557.How to check snapshot reserve value

#snap reserve

8.Command for restoring a file from snapshotsnap restore -t - V S

11.What is the function of Quisce in snapmirror Answer:The snapmirror quiesce command waits for all existing transfers to both volumes and qtrees tocomplete and blocks any further updates.The snapmirror quiesce command stops a volume or qtree from acting as a SnapMirror destination,but does not prevent it from acting as a SnapMirror source

Command:#snapmirror quiesce {dest_volume or /vol/volume_name/qtree_name}above command will result in and SnapMirror stops any further data transfers to volume.

(for detail see answer for question 10 step 1, where we stopped the further data transfer

12.What is difference between snapmirror and snapvault? Ans.Snapvault and Snapmirror both uses snapshot technology.#Snapvault : centralized backup of multipile qtree of multipile storage system using snapshot.Inshort itis a backup application

#Snapmirror : replcation of volume to volume and qtree to qtree using snapshot on another storagesystem. In short it is a DR Application13:What is RLM and BMC and what is the syntax to login from RLM and BMC?

Ans As per my knowledge RLM (Remote Lan Module) and BMC(Baseboard management Controller) bothare Remote module card.BMC is Onboard card on oldfilers(e.g.FAS20XX)and RLM is the external card available with (FAS30XX series) which are usedincase ethernet copper connectivty is not available.It is samelike the iLO in HP servers through which you can get real system console.command you can getthrough ? on prompt window... only limited commands areavailable ..... you can also use RLM/BMC to create system core dumpThe default username for RLM/BMC is "naroot" and password is same as storage system rootpassword.syntex you can login through ssh e.g #ssh naroot@storage_IPAddress14. What is the role of /etc/rc and /etc/exports file in Data Ontap

Ans./etc/rc : is the startup configuration file of filer which keeps the commands and options settings of filerand at last it contain Save core command./etc/exports: Conatain all nfs volume path with security and access settings.

1. How to recover the data from bad flash card.2. What will happen if you remove flash card from running filer.3. What is the work of NVRAM.

4. Types of Snapmirror.5. Types of VIF.
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Ans:1. How to recover the data from bad flash card.

A.Same card either can be ordered to NetApp to replace the old one or can be built by downloadingthe Kernal image from NOW.

2. What will happen if you remove flash card from running filer. A. Nothing will happen because its use in only in ONTAP boot.3. What is the work of NVRAM.

A. I do not have much knowledge about this but some use which I know are:I) Hold data until it is written on the disk.II) At the time of Semi/Synchronous snapmirror (Do not has space to explain in detail.)4. Types of Snapmirror.

A. I) Synchronous II) Asynchronous III) Semi Synchronous.(Do not has space to explain in detail.)5. Types of VIF.

A. I) Single Mode II) Multi Mode III) Dynamic Mode(Do not has space to explain in detail.)

We need more n more question ..... pls continue........

small addition to you question 3.(What is the work of NVRAM?)

NVRAM also holds WAFL data in case of power failure through its Battery-backed protection andrelease the data once the system comes Online.

1. Snap vault ?2. What is VSAN in zoning ?3. Which RAID level we will get the Vseries ?4. On which type of LUNS you are working ?5. WAFL architecture ?

6. What is consistency point ?7. What is deduplication and thin proviosining ?8. How to implement thin proviosining ?9. What kind of switches you are using ?10. What is NDMP backup ?11. What kind of VIFS you have configured?12. What is the mandatary condition while using MVIF ?13. Can we have the same vif for two V-filers ?9.what are the steps to configure snapmirror and the files

Ans: Assume Filer01 as source and Filer02 as destination volume both are mirrored With volumename vol3

Fresh Start:

*****ON SOURCE Filer011.#License add XXXXXXXX ( Where XXXXXXXX is the licence for snapmirror)2.#options snapmirror.access host=Filer02 (It will add destination filer to authorized toreplicate)3.options snapmirror.log.enable (To enable snapmirror on filer01)4.#vol create vol3 aggr1 10G (Cretae a flexible vol named as Vol3 on aggr1 size 10GB)5. cifs shares - add /vol/vol3 ( create a share for the purpose of copying some test file)

6.Create a /etc/snapmirror.conf file on filer01 with below command


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# wrfile /etc/snapmirror.confFiler01:vol3 Filer02:Vol3and save the by typing ctrl+C

Just make sure that snapshot is enabled for vol3 bcos volume will be updated through thesnapshot

*****On Destination Filer02Folow up stepl 1-5 (On step 2 add Filer01 instead of filer02)

*****Baseline transfer for snapmirror on Destination host (Filer02)

1.# Vol restrict vol3 ( Restrict the vol3 on destination filer Filer02)2.# snapmirror initialize -S Filer01:vol3 filer02:vol3 ( Intitlize the mirroring with filer01)

You Can check the snapmirror status through below command#snapmirror status l#snapmirror status:-)--------snap update from destination storage------10.How will you resize a snapmirror volume step by step

:Answer1) Quiesce the SnapMirror destination (CLI: "snapmirror quiesce vol_name")

2) Break the SnapMirror relationship (CLI: "snapmirror break vol_name")

3) Disable Fixed FS Size (CLI:"vol options vol_name fs_size_fixed off")

4) Grow the volume (CLI: "vol size vol_name +size_togrow")

5) resync the snapmirror (CLI: "snapmirror resync vol_name") --*** resync from sorcestorage*** Update from destination storageNo need to restrict the volume once again for snapmirror resync, it require only at the time ofbase intializing.(check question 9 for detail )
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95587594 Netapp Interview Qa1