Roy,
We use a similar scheme. The primary tapes of our "permanent" archives are
sent offsite, but we keep "temporary" (five-week-retention) archives
online.
Our technique is very similar to what William Colwell described. At the
end of the week during which we create the permanent archives, we send all
data-bearing tapes - full and filling - to the vault. The
"last_write_date" tells us everything we need to know if we have to
retrieve a file(s) from a particular month. We have tapes going back about
three years.
The vault vendor is five miles from here and can have a tape to us in an
hour or so.
It works, though as has been pointed out, having only one copy is higher
risk than relying upon a copypool.
Tab Trepagnier
TSM Administrator
Laitram Corporation
Roy Lake <RLake AT TANDB.CO DOT UK>@VM.MARIST.EDU> on 04/15/2002 08:59:26 AM
Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: How do I know what tapes my data is on - The Final Chapter !!!
(hopefully!)
Yeah - this is all very well and good, but I STILL won't know what tapes
my data is on will I?.
For instance, I have a set of 15 tapes. The customer says "Please
restore July 2001 data".
How can I know which tapes to check into the library? - I dont want to
end up checking them ALL in to just restore from ONE of the tapes!.
Kind Regards,
Roy Lake
RS/6000 & TSM Systems Administration Team
Tibbett & Britten European I.T.
Judd House
Ripple Road
Barking
Essex IG11 0TU
0208 526 8853
rlake AT tandb.co DOT uk
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