Veritas-bu

[Veritas-bu] Slow mailbox backups

2007-02-27 07:47:06
Subject: [Veritas-bu] Slow mailbox backups
From: ewilts at ewilts.org (Ed Wilts)
Date: Tue, 27 Feb 2007 06:47:06 -0600
On 2/27/2007 12:42 AM, Johan Redelinghuys wrote:
> We have an exchange client that for some reason is backing up it 
> mailboxes very slow. We know that mailboxes is by nature slow, but this 
> servers is REALLY slow. Under 1 MB per stream. Because it is a virtual 
> machine, it is backed up as a client. (Should have been a media server 
> due to its size, but being virtual server, it is not possible.) All 
> necessary configuration files have been created (NUMBER_DATA_BUFFERS and 
> SIZE_DATA_BUFFERS etc.)

I can't imagine why you would want to run Exchange in a virtual machine...

Have you read the Microsoft support article that discusses performance 
of the Exchange server?  http://support.microsoft.com/kb/320220.  There 
are some ideas in that article.

> Other exhange servers and their mailboxes in the domain, running fine. 

Are these others stand-alone or virtual machines?  Are they on the same 
virtual server host?

Since the virtual machine is limited to a single CPU, have you verified 
that no other virtual machine or the guest is consuming CPU resources 
while the backup is running?

        .../Ed

-- 
Ed Wilts, Mounds View, MN, USA
mailto:ewilts at ewilts.org

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