Generally, I always run at 50%. 2 tapes into 1. I have been known to reclaim at 25% when worrying about tape levels over a weekend...
You can run multiple reclamations per storagepool.. but theres a bit of legfowrk involved. Reclamations are really just move-data's, so you could start multiple move-data's based on tape %Util. .. You end up with several tapes you are reclaiming to, and if any of those don't fill past 50% you can reclaim then at the end. I used to reclaim purely using my chosen order of tapes and move-data's, as I didn't used to trust the order in which TSM picked the tapes it was going to reclaim. It seemed to make sense to me to pick the least utilised tapes first. Matt. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Ian Hobbs Sent: Monday, October 18, 2004 9:05 PM To: [EMAIL PROTECTED] Subject: Re: RECLAMATION I would say go as low as you can without impacting other processes. Why waste tape I always say <G>. 65% is not bad. I run at 50%. The trick I have found is to get to a level where the percentage is sustainable. If you can't get there, and tapes are becoming an issue, either get more tapes or drives. Reclamation sure can run a while on todays large tapes.....<wish> I wonder when multiple reclaims can be run for a single pool at once like migration or backup </wish> Also, if you are not getting enough tapes back, make sure expiration is running to completion regularly. On Mon, 18 Oct 2004 15:54:31 -0400, Lepre, James wrote: >What is the IDEAL pct for reclamation, I use 65pct should I go lower > >-----Original Message----- >From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of >Hart, Charles >Sent: Monday, October 18, 2004 3:51 PM >To: [EMAIL PROTECTED] >Subject: Re: RECLAMATION > >Here's one > >select count(*) from volumes where pct_reclaim>95 and >stgpool_name='TAPE_DR_COPY' > > >-----Original Message----- >From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] Behalf Of >Richard Hammersley >Sent: Monday, October 18, 2004 2:43 PM >To: [EMAIL PROTECTED] >Subject: Re: RECLAMATION > > >James, > >Do a "query volume" and look at the "pct util" column for the tapes >offsite. Compare that value with the Reclamation Threshold for your >pool. If there are a lot of tapes that meet that threshold and they >don't come back when they should then you should look to make sure the >reclamation is running when it should and if it is running to >completion.Reclamation Threshold > > >Richard > >James Lepre wrote: > >>Hello All, >> >> >> >> I am having problem with reclamation. Tapes are not being recycled as >>they should be. For instance I used get back about 100 tapes per week, >>now I am getting back 16. Any suggestions? >> >> >> Ian Hobbs [EMAIL PROTECTED] ======================================================= "Never argue with an idiot. They drag you down to their level then beat you with experience." -Dilbert ___________________________ Disclaimer Notice __________________________ This message and any attachments are confidential and should only be read by those to whom they are addressed. If you are not the intended recipient, please contact us, delete the message from your computer and destroy any copies. Any distribution or copying without our prior permission is prohibited. Internet communications are not always secure and therefore Powergen Retail Limited does not accept legal responsibility for this message. The recipient is responsible for verifying its authenticity before acting on the contents. Any views or opinions presented are solely those of the author and do not necessarily represent those of Powergen Retail Limited. Registered addresses: Powergen Retail Limited, Westwood Way, Westwood Business Park, Coventry, CV4 8LG. Registered in England and Wales No: 3407430 Telephone +44 (0) 2476 42 4000 Fax +44 (0) 2476 42 5432
