ADSM-L

Re: Reclaimation schemes and checkin of tapes

1999-07-15 01:35:26
Subject: Re: Reclaimation schemes and checkin of tapes
From: Joel Fuhrman <joelf AT CAC.WASHINGTON DOT EDU>
Date: Wed, 14 Jul 1999 22:35:26 -0700
With either of the most current levels, ADSM now reclaims the most empty
tape first; so the old trick of dropping the threshold from 90 to 80 to 70
and so on is no longer needed.

On Wed, 14 Jul 1999, Kelly J. Lipp wrote:

> Usually reclamation thresholds are set to 60 or greater.  This is the
> default value for primary storage pools.  That means too tapes (40%
> utilized) can be squeezed onto one tape.  What some folks do is drop the
> threshold to 90, then 80, then 70 and so on.  In that fashion, the most
> empty tapes are reclaimed first.
>
> 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
> Craig Winters
> Sent: Wednesday, July 14, 1999 11:01 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Reclaimation schemes and checkin of tapes
>
>
> How do you handle reclamation of tapes?  We have 3575 library and currently
> we set reclamation to 30% in the afternoon to clean up tapes.  But I noticed
> that a lot of tapes are below 30% and would never get reclaimed.  Do people
> just move data or set the reclamation to less than 30%?
>
> Also, question of checking tapes back in...  When I check in a tape and then
> look at it's status it still shows it as being unavailable.  I end up
> manually setting it to read/write to access it. Is there an automatic way
> for that to reset itself that I'm missing?
>
> Craig Winters, System Programmer
> ----------------------------------------------------
> Otter Tail Power Company
> PO Box 496
> Fergus Falls, MN 56538-0496
>
> Phone: 218-739-8288
> Fax:      218-739-8632
> E-mail: cwinters AT otpco DOT com
> ---------------------------------------------------
>                      =================
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>                    Power Company
>
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