Do you have tape in your primary storage hierarchy? If so, remember that even if part of your disk pool fails, you only lose access to the data that are on the failed volumes. You can then regenerate that data by either running another backup from the nodes that had backed up to that volume (if the backup to the copy pool hasn't happened yet) or from the copy pool. New backups can continue against the disk pool volumes that are still available, or can be cut through directly to tape if the entire pool is unavailable.
On 08/09/10 08:23, Dana Holland wrote:
Does anyone have opinions about setting up storage pools as Raid 1 as opposed to Raid 5? We have a very limited amount of disk space at the moment and don't know when we'll get approval to buy more. At the time we first started planning to implement TSM, we purchased what we thought would be plenty of storage. But, that was 4 years ago - and our usage has grown. Now, if I choose Raid 1, I barely have enough to create a primary and copy storage pool for one of our servers. And that isn't allowing for any growth at all. And I'm not sure how much additional space incremental backups would take. I know Raid 5 would give me more storage space, but I've also read that it's harder to recover from if there's a disk failure (read this on a TSM site somewhere). So, I'm wondering what some of you are using? __________ Information from ESET NOD32 Antivirus, version of virus signature database 5352 (20100809) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
-- -- Skylar Thompson (skyl...@u.washington.edu) -- Genome Sciences Department, System Administrator -- Foege Building S048, (206)-685-7354 -- University of Washington School of Medicine
