Kent,

being NAS does this device allow you any interface other than NDMP for
backup? I guess no.
So you are stuck to Full/Differential backup ideology provided by NDMP if
you want to backup without data transfers over the LAN. The drawback - you
lose all of TSM benefits and the protection level is not good enough for
such large ammount of data.
Other option is data move over LAN - mount the filesystems to a client and
perform backups from there. One transfer over the LAN to read files
(MgSysSAN client or client on the TSM server box) and second transfer if
MgSysLAN is used to send file to TSM server. Even with big network load
you will have incremental-forever, restore down to a single file,
copypools, etc. Look for details in "TSM for Windows Using the B/A
Client", Appendix A: Backing up NAS.

Zlatko Krastev
IT Consultant



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Subject:        EMC Celerra fileserver (NAS) with a Symmetrix (Fibre-SAN) 
backend

We'll soon have an EMC Celerra 8530, Connectrix fibre switch and Symmetrix
fibre-SAN in our NT environment.  This 'super-fileserver' is projected to
replace several hundred existing legacy NT fileservers.  The purchase has
been made.  Deployment is projected approx 2 months out and phased ports
of legacy server filesystems will commence shortly after that - but the
backup strategy and solution for it is still being spec'd.

The basic building blocks of the Symmetrix SAN will be 181GB disks (3-4 TB
of them initially).  The Celerra will have 10 Data-Movers initially.  EMC
was recently on-site to present all the good news about the Celerra.  For
backups and DR issues specifically, I'd also like to hear the people's
side of the story:
   - Who out there is backing up one of these, and how?
   - How well does your backup solution work (for backups, also for
restores) ?
   - How reliable is EMC hardware, service & tech support ?  Have you
experienced any
     downtime attributable to EMC hardware failures, service or
tech-support problems?
   - Are there any configuration or backup strategy pitfalls that we must
avoid to ensure
     successful daily backups?

-rsvp, thanks
Kent Monthei
Kent Monthei
GlaxoSmithKline