Re: anyone using ATA disk systems
2003-05-27 20:52:53
Yep - have a maxsize on the 2nd DASD pool. When migration kicks off from
the first DASD pool, the larger files will "skip" over the 2nd DASD pool to
tape. It's just a 2 step nextpool configuration. Plus, if the 2nd DASD
pool gets overfilled, it will migrate to the tape pool, so you won't get an
out of space condition.
Your storagepools would look like this:
Storage Device Estimated Pct Pct High Low Next Stora-
Pool Name Class Name Capacity Util Migr Mig Mig ge Pool
(MB) Pct Pct
----------- ---------- ---------- ----- ----- ---- --- -----------
SCSIDASD DISK 1000.0 00.0 00.0 90 70 ATADASD
ATADASD DISK 1000.0 00.0 00.0 90 70 TAPEPOOL
TAPEPOOL TAPECLASS 0.0 00.0 00.0 90 70
And the ATADASD pool would have a maxsize parameter on it of whatever you
wanted.
Nick Cassimatis
nickpc AT us.ibm DOT com
Think twice, type once.
"Rushforth, Tim"
<TRushforth@WINNI To: ADSM-L AT VM.MARIST
DOT EDU
PEG.CA> cc:
Sent by: "ADSM: Subject: Re: anyone using ATA
disk systems
Dist Stor
Manager"
<[email protected]
.EDU>
05/27/2003 03:41
PM
Please respond to
"ADSM: Dist Stor
Manager"
We've been thinking about a huge disk pool also. What we would probably do
is client backup to SCSI disk first then migrates to cheap disk or Tape.
What I really would like is to control which backups go to Tape or cheap
disk based on size. (We get great throughput restoring large files from
Tape - not sure if it is worth keeping them on Disk - small file restores
on
the other hand are killers on Tape.)
You can specify a maxsize parameter on a stgpool that a client will use but
this isn't used by subsequent migrations. This works if I want my client
backing up to tape directly - but I don't want that - not enough tape
drives!
Is there anyway that this could be done? IE. Initially backup everything to
DISK - then basically control migration or Move Data based on size of
files.
Or is this just whacky thinking?!
Thanks,
Tim Rushforth
City of Winnipeg
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- Re: anyone using ATA disk systems, Talafous, John G.
- Re: anyone using ATA disk systems, Burton, Robert
- Re: anyone using ATA disk systems, Steve Schaub
- Re: anyone using ATA disk systems, Andrew Raibeck
- Re: anyone using ATA disk systems, Paul Zarnowski
- Re: anyone using ATA disk systems, Rushforth, Tim
- Re: anyone using ATA disk systems, Steve Harris
- Re: anyone using ATA disk systems,
Nicholas Cassimatis <=
- Re: anyone using ATA disk systems, Rushforth, Tim
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