Wanda, What about setting up a TSM Library Manager and have him control the library and drives for a TSM Library Client doing all the restores.
________________________________ From: Wanda Prather <wprat...@jasi.com> To: ADSM-L@VM.MARIST.EDU Sent: Friday, July 10, 2009 1:06:53 PM Subject: Re: SV: Desperation, DR, and four TS3100 libraries... Thanks - that's what I suspected! On Fri, Jul 10, 2009 at 1:01 PM, Bob Levad <ble...@winnebagoind.com> wrote: > Wanda, > > We actually tried 2 TS3100s in a test recovery. It didn't go very well. > > If you attempt it. > > The Gresham product should be able to present 1 library image to TSM. I > don't know at what cost. > > Without Gresham: > > Make sure your incremental DB backups are directed to disk or someplace > other than the already overloaded libraries. > > If you have a few months to prepare, break the copypool down to several > that > will individually fit in a 3100 and give each copypool it's own devclass. > > Even though the devclass breakdown is not needed at the home site, it will > allow you to re-design as needed in a recovery scenario. > > Bob. > > > -----Original Message----- > From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of > Wanda Prather > Sent: Friday, July 10, 2009 10:31 AM > To: ADSM-L@VM.MARIST.EDU > Subject: Re: [ADSM-L] SV: Desperation, DR, and four TS3100 libraries... > > Thanks Christian, and everyone, for the suggestions. > > Even if I can convince TSM to work with the tapes spread across the 4 > libraries, I think I still lose too much throughput. > > If I want to restore multiple clients/filespaces in parallel, I think we > could easily get into the situation that client 1 is using the drive in > library 1, and the restore for client 2 needs a tape that is also in > library > 1. The only way I can see to keep all 4 drives busy is to use them in > manual mode. (Short of doing MOVE NODEDATA to guarantee that every client > is on its own tape, which is highly unrealistic for a copy pool. Not that > this scenario is realistic to begin with!) > > Thanks everyone! > Wanda (maybe another margarita will bring more enlightenment......) > > > On Fri, Jul 10, 2009 at 5:58 AM, Christian Svensson < > christian.svens...@cristie.se> wrote: > > > Hi Wanda, > > On my way to work this morning I have been thinking about your > > situation and I think I have an idea how you can get it to work. But > > only for restore not for backup... :) I haven't try this yet and > > probably don't have time to test it for you. But I think this will > > work. > > > > Define 4 SCSI Libraries > > Define 4 Drives. 1 to each Library > > Create 3 NEW Copypool Device Class that is pointing to Library 2,3 and > > 4 (CopyClass2, CopyClass3, CopyClass4) And Update one Device Class to > > point to the 1st Library. > > Now do a Audit of the library with Owner=YOUR TSM SERVER > > > > In this stage does TSM know that ALL Tape are available but in > > different libraries. > > > > Technically it should work. The database knows what tape TSM need and > > only change the data entry-path for the tape in the same way it does > > with the "primary" (1st) Library you have. > > > > This is still just an crazy idea like always that I normally have. > > > > > > Best Regards > > Christian Svensson > > > > Cell: +46-70-325 1577 > > E-mail: christian.svens...@cristie.se > > Skype: cristie.christian.svensson > > ________________________________________ > > Från: ADSM: Dist Stor Manager [ads...@vm.marist.edu] för Wanda > > Prather [wprat...@jasi.com] > > Skickat: den 10 juli 2009 03:33 > > Till: ADSM-L@VM.MARIST.EDU > > Ämne: Desperation, DR, and four TS3100 libraries... > > > > I'm drawing a blank here, any suggestions welcomed. > > > > I have a TSM customer who makes their copypool tapes using a TS3200 > > with > > LTO4 drives. > > The TS3200 is a rack-mounted, 2 drive, 40-mumble slot standard ASCII > > library. No issues. > > One copy pool, tapes vaulted and sent offsite. > > > > They want to go to a commercial DR vendor site and do a DR test next > week. > > The commercial DR vendor, unbelievably, has no multi-drive > > LTO4-capable libraries. > > > > Instead, they want us to use 4 (count 'em, four) TS3100 libraries. > > The TS3100 is a rack-mounted, 1 drive, 20-mumble slot standard ASCII > > library. > > > > There's only 1 copy pool, so all tapes were created on the same device > > class. > > Ignoring the which-carts-would-go-in-which-library issue, I can't have > > a device class pointing to 4 libraries. > > > > And, the TS3100 is built in such a way that unlike a TS3500, you can't > > open the doors and access the drives for manual mounting. > > (I'd be happy to pull the covers off and try it, ignoring any > > warranties I might void, but I doubt the vendor will let me attack the > > thing with a > > screwdriver/wrench/hacksaw.) > > > > If I put all the carts in one TS3100 that will work, but that leaves > > me only > > 1 drive to restore all the clients, and they won't likely get done in > > the desired time window. > > > > The only thing I can think of to use all 4 drives, is to define those > > four TS3100's as 1 manual library with 4 manual drives, and use the > > front panel of each TS3100 to move tapes from the I/O slot to the > > drive when TSM requests a mount. > > > > (Actually the FIRST thing I thought of, was "cancel the DR contract, > > this is nonsense". But my customer isn't convinced yet...) > > > > Anybody got a better solution? > > I've already tried a margarita, it didn't help.... > > > > W > > > > This electronic transmission and any documents accompanying this electronic > transmission contain confidential information belonging to the sender. This > information may be legally privileged. The information is intended only for > the use of the individual or entity named above. If you are not the > intended recipient, you are hereby notified that any disclosure, copying, > distribution, or the taking of any action in reliance on or regarding the > contents of this electronically transmitted information is strictly > prohibited. >