Bruno,

You are not going to get any better performance on that Exchange mailbox
backup.   The reason is that each mailbox is backed up via MAPI.   The
only thing that might help is getting a faster Exchange server, as the
bottleneck is on the Exchange server.

The mailbox backup works great for smaller installations, but once you get
into the larger information stores, it becomes hard to justify.   The
archives contain some messages about alternatives to the individual
mailbox backup.

Regards,

Jon

On Thu, 21 Nov 2002 Bruno.Bossier AT comparex DOT be wrote:

> Environment : Netbackup Datacenter 4.5 MP1, master on W2K and media servers
> on W2K and NT, 4 SSO drives
> 
> We are experiencing some performance problems. Most of the backups run, but
> we don't get the speed we expect. There is one specific server (W2K) which
> has an Exchange agent configured for individual mailbox backups (about 2700
> mailboxes). That backup takes a very long time, but it works (about 11
> hours for almost 60Gb). There is also a normal file backup scheduled and
> that one never works. The backup starts and after a while aborts with code
> 41 (network timeout). Sometimes the backup not even starts.
> 
> I found some documents on the Veritas support site which talks about
> several buffer settings. However, these documents are for Netbackup 3.4.
> 
> Are there some recommendations for these buffer settings ? I'm especially
> looking at tape buffer settings (SIZE_DATA_BUFFERS and NUMBER_DATA_BUFFERS)
> as this specific server is a media server with no clients attached to it
> and thus only backups itself.
> 
> Bruno
> 
> 
> 
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