ldmwndletsm
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We have a tape storage pool that does not have reclamation enabled. Specifically, the reclamation threshold=100, and the copy group settings (verexists, verdeleted, retextra, retonly) have 'No Limit', so no objects ever expire. Moreover, the corresponding copy pool is likewise the same.
Question: If we change the Copy Group settings to have limited (finite) values (something reasonable), and we set the reclamation threshold to < 100 (e.g. 50), then will this only affect backups going forward and not the data that's already been written to tape -- specifically full tapes ?
IMPORTANT NOTE: The reason for the question is because some time ago, we ejected a number of full tapes in this primary storage pool and stored them on site to free up tape storage slots in the tape library. This worked like a champ because reclamation is not used on that storage pool or the corresponding copy pool, although we do use it on others. The only reason we've ever had to reload those tapes has been to restore or conduct a test. However, for sustainment planning, we wanted to know if enabling reclamation would involve having to reload those tapes. The most recent last write date on any of those shelved tapes is a while ago. I suspect that such a change would not be retroactive, but if it is then that will change our planning as we will then have to accommodate all those tapes, thus requiring a slot license upgrade above what we were otherwise anticipating for our other primary pools where reclamation is being used (those other tapes remain in the tape library).
In the event that it's relevant, collocation by group is used on the primary pool in question, but collocation is not used on the corresponding copy pool.
Question: If we change the Copy Group settings to have limited (finite) values (something reasonable), and we set the reclamation threshold to < 100 (e.g. 50), then will this only affect backups going forward and not the data that's already been written to tape -- specifically full tapes ?
IMPORTANT NOTE: The reason for the question is because some time ago, we ejected a number of full tapes in this primary storage pool and stored them on site to free up tape storage slots in the tape library. This worked like a champ because reclamation is not used on that storage pool or the corresponding copy pool, although we do use it on others. The only reason we've ever had to reload those tapes has been to restore or conduct a test. However, for sustainment planning, we wanted to know if enabling reclamation would involve having to reload those tapes. The most recent last write date on any of those shelved tapes is a while ago. I suspect that such a change would not be retroactive, but if it is then that will change our planning as we will then have to accommodate all those tapes, thus requiring a slot license upgrade above what we were otherwise anticipating for our other primary pools where reclamation is being used (those other tapes remain in the tape library).
In the event that it's relevant, collocation by group is used on the primary pool in question, but collocation is not used on the corresponding copy pool.