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protection manager and migrating data to new disk shelves

Have 3 filers, 1, 2 and 3.  Filer 1 hold the primary data, filer 2 is for backup and filer 3 is the mirror to 2 for disaster recovery.  Data is backed up using Protection Manager.

So got new shelves for filer 1.  Need to migrate the data off of the old disk shelves to the new disk shelves.  Both sets of shelves are attached to filer 1. If I vol copy the data to the new shelves PM stays pointed at the old data.  If I try to point to the new data it wants to rebaseline.  Don't want to do this.

How do I copy the data to the new shelves and get Prot Mgr to reassign to the new data location on the new shelves without having to rebaseline and losing all my previous backups?

Re: protection manager and migrating data to new disk shelves

Some more informtion is needed here to provide you with a feasible solution.

1. What is the ONTAP version on your filers?

2. What is your dfm version?

warm regards,
Abhishek

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Re: protection manager and migrating data to new disk shelves

ONTAP version is 7.3.3

DFM version is 3.7

Re: protection manager and migrating data to new disk shelves

Hello Keith,

     DFM version 3.7 is too old to support anything what you need. If you Upgrade to DFM 4.0.1and have Provisioning Manager Licensed then this must be possible.

As far as I know about migration of volumes and protection relationships in DFM,

4.0.1 for ONTAP 8.0.1: NDVM( non disruptive volume migration) from one aggr to another within the same filer also migrating all the protection relationships. This will  exactly be what you need. But this requires you to upgrade both your ONTAP and DFM.

4.0.1 for ONTAP 7.3.3 : Little cumbersome, but it should be possible using some "round-trip" to move your primary volumes keeping the protection relationships intact to new aggrs ( created on the new disks on filer 1). For this your primary volumes must be on a vfiler. If they are not still it should be possible with some more work, but this migration process will be disruptive i.e. till the whole 'round-trip' completes your primary data will not be accessible.

For now, i can' t think of anything else using DFM that can help you.

Others,

     please share if you have any better  ideas or correct me if I'm wrong anyhwhere.

warm regards,

Abhishek

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Re: protection manager and migrating data to new disk shelves

NDVM is for volumes which has LUNs and if the volumes which Keith is talking

about have FCP settings then the solution with vfiler will not work.

NDVM is not supported for NAS volumes, although there is workaround for NFS

volumes; it¹s not supported for CIFS.

Keith, it will be helpful if you can tell the environment more in detail;

iSCSI/FCP/NFS/CIFS etc.

Caveats :

1. If you use NDVM, then any backup/mirror update during final cutover might

fail and you might need to restart the update once the cutover is done.

Thanks

Tanmoy

Re: protection manager and migrating data to new disk shelves

The volumes in question are CIF shares that are iSCSI attached.  No NFS running in system.  Reading through the posts the best plan is to upgrade to DFM 4.0.  At this time we are unable to upgrade to ONTAP 8.0.  Incremental upgrade to 7.4 may be possible.

Re: protection manager and migrating data to new disk shelves

Hi

     We have a feature in DFM 4.0 called Secondary Space Management, which migrates individual volume, which are part of dataset.

The rule or conditions that needs to be met for a volume to be migrate capable is the following.SSM doesn't migrate the following.

  1. Root Volume of a filer or vfiler is not migration capable.
  2. Volumes with client facing protocols like CIFS, NFS, iSCSI,FCP.
  3. Volume which are parents of flexclones.
  4. Volume which have unmanaged relationships.

I think, just item 2 applies to you.If you remove the client facing protocols you will be able to migrate using SSM, but during the entire duration of initial baseline from old primary to new primary.

After the inital baseline SSM will modify the relationship by that we you dont have to rebaseline the downstream relationship and also wont loose any already registered backup.

Regards

adai

Re: protection manager and migrating data to new disk shelves

Well we've upgrade DFM to 4.0 and opened a case with tech support.  Seems like our only catch right now is the volumes host CIF shares.  So if I read your post right all we need to do is remove the shares during the migration and then we can put them back after.  Which works since we will be doing the transfers during maintenance window.

Thanks for all the help everyone's given.

Re: protection manager and migrating data to new disk shelves

Yes. You will have to remove the shares, run dfm host discover and then try the migrate. Pls note share will not be created by SSM, you will have to manually recreate it.

Pls upgrade to 4.0.1

Regards

adai

Re: protection manager and migrating data to new disk shelves

Sorry, meant that we had upgraded to 4.0.1