Hi Pat,

 

What strategy are you planning for VTL to tape, thats where we had problems. Vault takes long so you would need to have more physical drives or less data to be vaulted.

 

Regards,

PP BIJU KRISHNAN

 

On 7/27/07, Kenny <netbackup-forum AT backupcentral DOT com> wrote:

I have a large NetApp environment and I am looking for a new strategy for backing up my filers. I am trying to decide between using SnapVault technology or a VTL with tape.

I am fortunate to be able to replicate all my primary filers to a remote location. From there I want to protect the data. I have a 7 year retention policy for my data. I was thinking of protecting 14 days online, then only monthly's for 7 years.

I rarely do restores and most of the data is  flat files.

With SnapVault I am able to transfer data to NearStore. It takes an initial baseline copy, like a full backup, then it it would only "snap" the incremental changes at the block level. I am thinking that this would be very fast for daily backups and I could eliminate tape.

The alternative would be to use my existing NetBackup software to backup each filer via NDMP to a VTL. From the VTL I would apply the same retention. 14 days in the VTL then monthly's to tape for 7 years.

I do not have to takes tape offsite since I am the primary copy is 300 miles away.

So.... I was wondering if anyone has any thoughts on this. I am concerned with SnapVault since it is all disk and corruptions may happen. It also has a limitation of 251 snaps. That should not be a problem with my retention policy, but my requirements may change? Also what would happen if I lost the initial baseline copy, does that mean that all the incremental snaps are worthless?

Unfortunately if I go with SnapVault, economically I will not be able to use tape or Netbackup, so at that point I would not have the security of tape.

So VTL and Tape or SnapVault.

Thanks in advance for your help.

Pat

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