We debated having a copy pool when doing our DD setup. We finally decided that using a daily DD snapshot was an acceptable solution. We take a snapshot a little while after the TSM db backup completes (tsm db backup is on the DD in it's own filepool). Snapshots are kept for 3 days which is our tsm db backup retension and also our reuse delay. The DD snapshot feature was a disappointment. It's all or nothing, covering the entire DD filesystem. To be useful it needs to be made per some defined subdirectory or replication context.
Rick From: Rick Adamson <rickadam...@winn-dixie.com> To: ADSM-L@VM.MARIST.EDU Date: 06/17/2011 11:10 AM Subject: Re: tsm and data domain Sent by: "ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> Steven, I agree, you comment is regard to the copy pools is something I am a little concerned with. I am preparing the move from 5.5 to ver 6.2 now and am in conversations with management on that very subject so I can procure the needed resources. The talks are somewhat challenging to say the least as the DD reps had already told them that the copy pools were not necessary. My concern led to the age-old question "what are the chances that something like that would happen to us?" Just in case I do have the proverbial warning email archived away. ~Rick -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Steven Langdale Sent: Friday, June 17, 2011 10:30 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] tsm and data domain > > I have had DD implemented for about a year now, but I fail to understand > why anyone would utilize the DD VTL license when using TSM? > > Mine are setup as a simple SAN device with defined directories that > correspond to my TSM primary storage pools. I have the device calss in > TSM set as the type "file" and let TSM manage the virtual volumes as it > would any other disk storage. There is another DD system that is located > at our DR facility, and all data including TSM DB backups are replicated > to that location. This allows me to no longer have copy pools. > > Rick A not uncommon configuration, I have also used DD's of NFS for disk pools as well. Then only time I've seen them as VTL's is when LAN Free was required. I would however think again about not having a copy pool as you are leaving yourself open to TSM logically corrupting data and having no backup. ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.
