Yikes.  This is well beyond the size of what I would consider healthy in a
TSM database.  And the picture is worse that you paint, since you will
likely have multiple backup versions of each file, and you didn't account
for 25% overhead.  Sounds like a job for multiple TSM servers.


_____________________________
William Mansfield
Senior Consultant
Solution Technology, Inc





Gerald Wichmann <gwichman AT ZANTAZ DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
04/26/2002 02:08 PM
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        TSM DB Max Size


My environment could be up to 25TB and 625,000,000 files. According to the
TSM 4.2 Admin Guide to calculate the size of my DB I multiply that by 600
bytes..

625,000,000 * 600 = 375,000,000,000 bytes = 375,000,000 KB = 375,000 MB =
375 GB

There also needs to be an offsite copypool of this data.. According to the
TSM 4.2 Admin Guide:

625,000,000 * 200 = 125,000,000,000 bytes = 125GB

So my DB needs to be 500GB, yikes..

How big can one scale a single TSM server installation up to before you
need
to start thinking about additional TSM servers? I.e. in this instance can
my
TSM server even handle this amount of data? How much could it handle?

Gerald Wichmann
Sr. Systems Development Engineer
Zantaz, Inc.
925.598.3099 w
408.836.9062 c