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Contents
- 1 How to take Tivoli Storage Manager (TSM) Database backup – www.tsmtutorials.com
- 2 When does reclamation occur for off site volumes?
- 3 What is reclamation and how does it work?
- 4 What is the reclamation threshold for a sequential-access storage pool?
- 5 When is a volume eligible for space reclamation?
- 6 Information related to the topic offsite reclamation in tsm
How to take Tivoli Storage Manager (TSM) Database backup – www.tsmtutorials.com
When does reclamation occur for off site volumes?
For off-site volumes, reclamation can occur when the percentage of unused space on the volume is greater than the reclaim parameter value. The unused space in copy storage pool volumes includes both space that has never been used on the volume and space that has become empty because of file deletion or expiration.
You can start reclamation processing at desired times by changing the reclamation threshold for the storage pool. To monitor off–site volume utilization and help you decide what reclamation threshold to use, enter the following command: query volume * access=offsite format=detailed. Depending on your data expiration patterns, you may not need …
What is reclamation and how does it work?
During reclamation, the server copies the files to volumes in the same storage pool unless you have specified a reclamation storage pool. Use a reclamation storage pool to allow automatic reclamation for a storage pool with only one drive.
What is the reclamation threshold for a sequential-access storage pool?
You can set a reclamation threshold for a sequential-access storage pool when you define or update the pool. When the percentage of reclaimable space on a volume exceeds the reclamation threshold set for the storage pool, the volume is eligible for reclamation.
The lower the reclamation threshold, the more frequently the server tries to reclaim space. Frequent reclamation optimizes the use of a sequential-access storage pool’s space, but can interfere with other processes, such as backups from clients. If the reclamation threshold is high, reclamation occurs less frequently.
When is a volume eligible for space reclamation?
When the percentage of reclaimable space on a volume exceeds the reclamation threshold set for the storage pool, the volume is eligible for reclamation. The server checks whether reclamation is needed at least once per hour and begins space reclamation for eligible volumes.
References:
How Tivoli Storage Manager reclamation works – IBM
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When is a volume eligible for space reclamation?
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What is reclamation and how does it work?
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offsite reclamation in tsm
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