It will help once you get to TSM 5.3 as you can use the reclaim stgpool command with the duration parameter. It will cancel the reclamation process when the duration has expired, so you will just have to wait for that last aggregate to finish being moved instead of waiting for the entire volume to finish its reclaim. As long as your mount retention is low, everything should be done and out of the tape drives after 20 minutes or so beyond the reclamation duration. The reclaim window from 2am to 6am sounds like a good idea too.
______________________________ John Monahan Senior Consultant Enterprise Solutions Computech Resources, Inc. Office: 952-833-0930 ext 109 Cell: 952-221-6938 http://www.computechresources.com "Kauffman, Tom" <[EMAIL PROTECTED] COM> To Sent by: "ADSM: ADSM-L@VM.MARIST.EDU Dist Stor cc Manager" <[EMAIL PROTECTED] Subject .EDU> Re: Running tapes off-site multiple times in a day? 01/05/2006 10:31 AM Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED] .EDU> We'll be adding 6 more drives in a few weeks -- to a total of 16. I have 6 off-site copy pools, one of which never goes through reclaim as it's a 21-day archive pool. I'm most concerned about the process for wrapping up an in-process reclaim and getting the tape out of the drive by the time the afternoon database backup finishes (I do full backups to LTO -- currently runs about 20 minutes). I figure I'll need to open a reclaim window in the 2 AM to 6 AM time frame in order to get everything done. And I'd REALLY like to spend the money and put in the telecom circuit instead. Tom -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Monahan Sent: Thursday, January 05, 2006 11:10 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Running tapes off-site multiple times in a day? I'm thinking you're going to need to add tape drives before thinking of doing something like this. You are going to shorten your current daily maintenance window because you have to squeeze in a portion of it to do a second run. Could be done if you can shorten your current window enough, but I would think that would mean adding tape drives. Getting your reclaims done is going to be a problem as well with only single threaded reclamation processes - if you currently run until 8pm sometimes and you are going to need to shorten that - will be tough unless you break your data up into more pools. Sounds awfully ugly to me. I think the correct answer is yes it is technically possible, but do we REALLY need to do it this way. ______________________________ John Monahan Senior Consultant Enterprise Solutions Computech Resources, Inc. Office: 952-833-0930 ext 109 Cell: 952-221-6938 http://www.computechresources.com "Kauffman, Tom" <[EMAIL PROTECTED] COM> To Sent by: "ADSM: ADSM-L@VM.MARIST.EDU Dist Stor cc Manager" <[EMAIL PROTECTED] Subject .EDU> Running tapes off-site multiple times in a day? 01/05/2006 08:54 AM Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED] .EDU> Like I said -- the questions are crawling out of the wood-work. Our management wants to reduce the possible data loss in the event of a disaster by taking copies off-site both in the early morning and again at the end of first shift. Is anyone else doing this? Will this be as painfull as I expect it to be? I know I'll have issues with reclaims -- I currently run expire inventory at noon, with reclaims kicking in shortly thereafter and sometimes running to 8:00 PM, so I'll have to implement a reclaim window. Electronic off-siting isn't an option -- I've seen us cut 400 MB Oracle redo logs for our SAP/R3 database at the rate of one every 2.5 minutes for extended time periods (and this is explicitly the data that has to go off-site). I'd need multiple T1 lines to cover the traffic, and the cost of a single T1 is considered to be "too high". I'm currently running TSM 5.1.6.3, planning on upgrading to 5.3.current in the next two weeks. TIA Tom Kauffman NIBCO Inc
