> I have a similar config (clustered Win2003 servers, 
> as storage nodes, with SAN disk space as AFTD devices), mostly for SQL, 
> altho my largest is a file server (1.5TB). 


Michael, how did you setup VSS on the file servers ? Are you using space from 
the same drive for shadow storage volumes ?

Our file servers are also about the same size ( 1.6 TB) with  24 million +  
files.

After putting VSS*=OFF in the client's save operations , the backup became even 
slower.
Weekly full backup for the clustered file servers take ~ 55 hrs :(

We were getting the following error before disabling VSS from networker.


Emc has confirmed that there is an issue with slow adv_file performance in 
7.5.1.4. So we are first going to upgrade NW to 7.5.1.6 ( not 7.6 [Wink] ) and 
then apply VSS on the servers.

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