ldmwndletsm
ADSM.ORG Senior Member
- Joined
- Oct 30, 2019
- Messages
- 232
- Reaction score
- 5
- Points
- 0
Let's say you have multiple stanzas, so maybe you have three nodes for the same physical box wherein each node handles a different list of file systems. And lets suppose that stanza 1 (node A) backs up /filesytem1. If you later change the stanzas so that stanza 3 (node C) now handles /filesystem1, and no longer stanza 1 (and let's say the storage pools and all that stays the same), then what?
If would seem that if you were recovering a directory under /filesystem1 that had never been backed up by node A then no problem since you'll specify the correct .opt file when you run dsmc wherein it will know to restore from node C. Likewise, if it had been backed up by node A at some point in the past, and then also later with node B, and you needed an older copy from node A then you could just specify the corresponding .opt file for node A, BUT:
1. What if you didn't know that it had ever been backed up by node A?
2. What if you need to rebuild it the way it looked yesterday, and this requires tapes from when it was handled by node A and also node B?
How would you tell TSM to do this when the directory's backup history spans two nodes? I thought when restoring data that you have to use the node (specify the corresponding .opt file, unless it's the defult dsm.opt) that corresponds the stanza that managed the data?
Would you have to first recover it from node A and then from node B and overwrite any duplicates?
If would seem that if you were recovering a directory under /filesystem1 that had never been backed up by node A then no problem since you'll specify the correct .opt file when you run dsmc wherein it will know to restore from node C. Likewise, if it had been backed up by node A at some point in the past, and then also later with node B, and you needed an older copy from node A then you could just specify the corresponding .opt file for node A, BUT:
1. What if you didn't know that it had ever been backed up by node A?
2. What if you need to rebuild it the way it looked yesterday, and this requires tapes from when it was handled by node A and also node B?
How would you tell TSM to do this when the directory's backup history spans two nodes? I thought when restoring data that you have to use the node (specify the corresponding .opt file, unless it's the defult dsm.opt) that corresponds the stanza that managed the data?
Would you have to first recover it from node A and then from node B and overwrite any duplicates?