Change customer's mind.





                    Stefano Massi
                    <Stefano_Massi        To:     ADSM-L AT VM.MARIST DOT EDU
                    @SACMI.IT>            cc:
                    Sent by:              Subject:     TSM vs NSR Performance
                    "ADSM: Dist
                    Stor Manager"
                    <ADSM-L AT VM DOT MAR
                    IST.EDU>


                    03/15/2001
                    09:41 AM
                    Please respond
                    to "ADSM: Dist
                    Stor Manager"





Hi all,

we are using TDP for SAP R/3 v3.1.0.4 for NT/Oracle, on a client connected
to a TSM Server 4.1.2.0 (Windows NT) through a Gigabit network. An online
backup of the whole DB (about 130 MB), directly to DLT tapes with two
sessions, lasts over 2 hours, that means about 60 GB/h.

Before migrating to TSM, we were able to back up the same database in about
1 hour and 15 minutes (about 105 GB/h) using Legato NSR.

I tried to change network parameters to improve the data transfer rate, but
without success. So I tried to backup to disk storage pools and I got a
poor 30 GB/h.

Finally, I decided to define disk storage pools in EMC2 storage disks, back
up directly to them, and I obtained about 107 GB/h! But my customer doesn't
want to "waste EMC storage space for TSM storage pools", so I'm looking for
an alternative  solution...

Any ideas?

Thanks in advance,
               Stefano Massi