[Networker] AFTD volume best practice: maximum size?

Well, the largest AFTDs I have are just over 15 TB, and they've been happy 
enough after 4 years.  However, they're VxVM/VxFS controlled (Sol 8 ).  I 
considered larger, but due to initial choices on the block size I've hit the 
max for now.

Since you mention ZFS, trying to 'shrink' the volume is not possible.  Do you 
have enough disk to attempt to create a temporary, smaller AFTD ZFS pool and 
transfer (perhaps using snapshots)?

--TSK



Alan Rubin wrote:
> Hello,
> 
> We are running NetWorker 7.3.3 on a T2000 with Solaris 10 08/07.  We use ZFS 
> for
> our AFTDs and we are able to grow them quite large.  We get our storage from a
> SAN currently made up of an IBM DS4800 and a DS6800.  Our largest AFTD volume 
> is
> 16.4TB, but we have been seeing "media emergency" errors in our logs and
> encountering RPC errors on backups.  The OS reports no errors on the disk
> devices, and ZFS sees no issues with the zpool.    If we do a full reset of
> NetWorker we can get at least one good day out of the backups without issue - 
> no
> problems talking to the AFTD.  And we aren't having any issues with our 
> smaller
> AFTDs, also built on ZFS.  And no problems with our tape backups.  Even worse,
> the backup session starts off the nightly backup with successful backups to 
> the
> AFTD in question before it starts failing.
> 
> So, is there a recommended maximum size for an AFTD and we've just gotten too
> big?  Or, is this just more aggravation from NetWorker?  Can anyone shine any
> light on this?
> 
> 


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