Re: reclamation tape predicting
Same situation here, but we have 120 tapes in our 60 slot 3583. When space reclamation runs, it fails everyday, so they take a list of tapes TSM asked for, get them off the shelf, and check them all in. I think this was asked a very long time ago, and there was no real answer - you'll have to run it to acquire a list of required volumes. ..unless there IS in fact a way of determining these volumes.. It would be great to hear it. Matthew Dave Zarnoch [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU 07/06/2005 14:55 Please respond to ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU To ADSM-L@VM.MARIST.EDU cc Subject [ADSM-L] reclamation tape predicting Oh mighty gurus. We have had to relocate some of our tapes to an overflow location because of our silo capacity. I basically mark them as unavailable and shelf. When reclamation starts, I redefine some of the tapes to readw and wait to see if TSM calls for them. I then have to physically insert them into the silo for each request. Is there anyway to query TSM to generate a list of tapes that it will require for reclamation? That way, I can redefine just those tapes and load them all at once into the library. Thanks! DaveZ Aviva plc Registered Office: St. Helen's, 1 Undershaft, London EC3P 3DQ Registered in England Number 02468686 www.aviva.com This message and any attachments are confidential. If you are not the intended recipient, please telephone or e-mail the sender and delete this message and any attachment from your system. Also, if you are not the intended recipient you must not copy this message or attachment or disclose the contents to any other person.
Re: reclamation tape predicting
You can try something like this, (depending on your reclamation threshold...). select volume_name,stgpool_name,location,pct_utilized,pct_reclaim from volumes where pct_reclaim70 order by pct_reclaim desc //Henrik -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Dave Zarnoch Sent: 7. juni 2005 15:56 To: ADSM-L@VM.MARIST.EDU Subject: reclamation tape predicting Oh mighty gurus. We have had to relocate some of our tapes to an overflow location because of our silo capacity. I basically mark them as unavailable and shelf. When reclamation starts, I redefine some of the tapes to readw and wait to see if TSM calls for them. I then have to physically insert them into the silo for each request. Is there anyway to query TSM to generate a list of tapes that it will require for reclamation? That way, I can redefine just those tapes and load them all at once into the library. Thanks! DaveZ --- The information contained in this message may be CONFIDENTIAL and is intended for the addressee only. Any unauthorised use, dissemination of the information or copying of this message is prohibited. If you are not the addressee, please notify the sender immediately by return e-mail and delete this message. Thank you.
Re: reclamation tape predicting
Another approach is not to use reclamation, to avoid the unpredictability... I will assume that it is a subset of primary storage tapes which are ejected from the library and stored somewhere outside it. Leave your outside-library tapes unavailable for reclamation. When housekeeping time arrives, have a dsmadmc-driven programette query for external primary tapes which have enough space worth reclaiming, then call for their reinsertion; then Checkin and perform 'MOVe Data ... RECONStruct=Yes' on each volume in turn. You will likely have to operate on just a few tapes at a time due to your library cell constraints. Checkout as needed. This is a pain, but operating a library in other than enterprise mode makes for such irregularities. Your management may want to assess the cost of implementing such a scheme against the cost of additional library space. Richard Sims
Re: reclamation tape predicting
Few years back I was in a similar suitation. I had 300 online tapes but only 60 slots. I first of all made sure that I only would perform restores ! I left all the online tapes that couldn't be housed in the library as available close by. They were mostly full and readonly. When I needed to do reclamation I used to set mountwait to 1 minute, so that after one minute if tape was available reclamtation would end. UPDATE DEVCLASS device-class_name MOUNTWAIT=1 UPDATE STG COPYTAPEPOOL RECLAIM=60 Ran reclamtion for a while, say 30 mins, and ended up with a list of tapes required, from the activity log. UPDATE STG COPYTAPEPOOL RECLAIM=100 I then checked in the tapes made them available and repeated reclamation. I similarly ran large restores, with restores always remembering to update mountwait to 60 or even longer, after the first trial run . Bill Matthew Large [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU 07/06/2005 15:03 Please respond to ADSM: Dist Stor Manager To: ADSM-L@VM.MARIST.EDU cc: Subject:Re: [ADSM-L] reclamation tape predicting Same situation here, but we have 120 tapes in our 60 slot 3583. When space reclamation runs, it fails everyday, so they take a list of tapes TSM asked for, get them off the shelf, and check them all in. I think this was asked a very long time ago, and there was no real answer - you'll have to run it to acquire a list of required volumes. ..unless there IS in fact a way of determining these volumes.. It would be great to hear it. Matthew Dave Zarnoch [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU 07/06/2005 14:55 Please respond to ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU To ADSM-L@VM.MARIST.EDU cc Subject [ADSM-L] reclamation tape predicting Oh mighty gurus. We have had to relocate some of our tapes to an overflow location because of our silo capacity. I basically mark them as unavailable and shelf. When reclamation starts, I redefine some of the tapes to readw and wait to see if TSM calls for them. I then have to physically insert them into the silo for each request. Is there anyway to query TSM to generate a list of tapes that it will require for reclamation? That way, I can redefine just those tapes and load them all at once into the library. Thanks! DaveZ Aviva plc Registered Office: St. Helen's, 1 Undershaft, London EC3P 3DQ Registered in England Number 02468686 www.aviva.com This message and any attachments are confidential. If you are not the intended recipient, please telephone or e-mail the sender and delete this message and any attachment from your system. Also, if you are not the intended recipient you must not copy this message or attachment or disclose the contents to any other person.
Re: reclamation tape predicting
When housekeeping time arrives, have a dsmadmc-driven programette query for external primary tapes which have enough space worth reclaiming, then call for their reinsertion; then Checkin and perform 'MOVe Data ... RECONStruct=Yes' on each volume in turn. You will likely have to operate on just a few tapes at a time due to your library cell constraints. Checkout as needed. The problem is messier than the above proposal indicates. A tape that is a candidate for reclamation may start with a file continued from another volume, or end with a file that is continued on another volume. If either or both of these things happens, the 'move data' for the reclamation candidate will attempt to mount the tape or tapes containing the other parts of the spanned files.
