I would check your microcode levels on your drives to make sure that they
are all at the same level. That microcode can really make a difference in
the performance of the drive. Is this new drive a 3590E?
Ken
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
> Landreville, Frederic
> Sent: Monday, September 27, 1999 02:19
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: Reclamation of Copypool (which is offsite)
>
>
> Found my problem!
>
> For ADSM, we installed a new 3590 tape drive (for a total of 4).
> Strangely,
> all "write" operations (Daily copypool copies, DBBs etc) worked
> fine on the
> new tape drive.
>
> When a Tape Reclamation job used this new tape, through put was only a
> couple of gigs a day! We put this tape drive offline, and restarted this
> job, and tape reclamation job ran in less than 2 hours for 12 tapes...
>
> Sometimes it not software, but hardware...
>
> Just thought I'd let you know!
>
> Frederic Landreville
> Phone 011-41-22-703-0323 Internet fred_landreville AT rjri DOT com
> Fax 011-41-22-703-0324
>
> R.J. Reynolds International B.V. (Hilversum) Geneva Branch
> 14, Chemin Rieu
> CH-1211 Geneva 17
> Switzerland
>
>
>
> -----Original Message-----
> From: Kelly J. Lipp [mailto:lipp AT storsol DOT com]
> Sent: September 17, 1999 6:22 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: Reclamation of Copypool (which is offsite)
>
>
> The reclamation of copypool tapes is inherently slower than other
> operations. Think about what's going on. A copy pool tape
> reclamation will
> get data from primary pool tapes. The copypool volume being reclaimed
> actually stays offsite. So there is probably a lot of file skipping going
> on as tapes are read. This will account for your apparently slow
> throughput. Not every file on a primary pool tape will be moved to a new
> copy pool tape during reclmation. Only those files that exist on
> copy pool
> tapes being reclaimed.
>
> I said tapes. I think what ADSM is doing is deciding which copy storage
> pool volumes meet the reclamation threshold and it works on all of those
> volumes simultaneously. This is different from a primary tape pool
> reclamation. Smart though, when you think about it.
>
> Kelly J. Lipp
> Storage Solutions Specialists, Inc.
> PO Box 51313
> Colorado Springs CO 80949
> 719-531-5926
> www.storsol.com
> lipp AT storsol DOT com
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
> Landreville, Frederic
> Sent: Thursday, September 16, 1999 11:39 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Reclamation of Copypool (which is offsite)
>
>
> Here is our setup:
>
> We have ADSM Version 2 running on an AS400 model 640 with V4R1 and 3 3590
> drives. Everything run great, backup, DBB, Copytapes etc...
>
> When we try the Reclaimation job for the COPYTAPE pool, I get
> only about 300
> to 400 megs per hour throughput... what gives? (as we get 3 to 6
> gigs in 15
> minutes for the creation of COPYTAPEs)
>
> while the job is running (or walking, depending on my point of view) the
> AS400 CPU is only at 1 to 3% busy.
>
> Anybody have any experiences to share with ADSM on AS400?
>
>
>
> Frederic Landreville
> Phone 011-41-22-703-0323 Internet fred_landreville AT rjri DOT com
> <mailto:fred_landreville AT rjri DOT com>
> Fax 011-41-22-703-0789
>
> R.J. Reynolds International B.V. (Hilversum) Geneva Branch
> 14, Chemin Rieu
> CH-1211 Geneva 17
> Switzerland
>
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