"alan" wrote in message
m...
Has anyone experienced performance degradation when backing up large
volumes of files from a NAS array? I am researching complaints that
backing up large volumes of small files (128k)results in a noticeable
performance drop. One suggested solution was to segregate small files
and back them up over the LAN rather than the SAN. Does this make
sense?

Thanks,
Alan

First step is to find out where the bottleneck is. With large numbers of
small files, maybe the disks are overwhelmed by seek requests. More often
the backup software has a bottleneck keeping track of all those small
transactions in the index database.

Measure disk I/O on the NAS, and on the backup server. Find out where the
bottleneck is. Once you find that out, it's time to talk about possible
fixes.

Rob