TSM中存储池的作用
我们的环境中有四个存储池：DBBAK_POOL和DATABAK_POOL 这两个池用于备份数据，都分配有存储卷。但是另外两个池DBreclaimpool和datareclaimpool回收池是干什么用的呢？ 也没有分配存储卷，它们的“下一个存储池”指向上面的两个存储池 ，搞不懂这两个池到底什么意思，有什么用途，什么时候能够用到？请求详细点的解答，谢谢啦！
2同行回答
When a storage pool has only one mount point (that is, just one drive) available to it through the device class, data cannot be reclaimed from one volume to another within that same storage pool. To reclaim volumes in a storage pool that has only drive, you can define a reclamation storage pool and use it for temporary storage of reclaimed data.
When the server reclaims volumes, the server moves the data from volumes in the original storage pool to volumes in the reclamation storage pool. The server always uses the reclamation storage pool when one is defined, even when the mount limit is greater than one.
If the reclamation storage pool does not have enough space to hold all of the data being reclaimed, the server moves as much of the data as possible into the reclamation storage pool. Any data that could not be moved to volumes in the reclamation storage pool still remains on volumes in the original storage pool.
The pool identified as the reclamation storage pool must be a primary sequential storage pool. The primary purpose of the reclamation storage pool is for temporary storage of reclaimed data. To ensure that data moved to the reclamation storage pool eventually moves back into the original storage pool, specify the original storage pool as the next pool in the storage hierarchy for the reclamation storage pool. For example, if you have a tape library with one drive, you can define a storage pool to be used for reclamation using a device class with a device type of FILE:
define stgpool reclaimpool fileclass maxscratch=100
Define the storage pool for the tape drive as follows:
define stgpool tapepool1 tapeclass maxscratch=100
reclaimstgpool=reclaimpool
Finally, update the reclamation storage pool so that data migrates back to the tape storage pool:
update stgpool reclaimpool nextstgpool=tapepool1收起
When the server reclaims volumes, the server moves the data from volumes in the original storage pool to volumes in the reclamation storage pool. The server always uses the reclamation storage pool when one is defined, even when the mount limit is greater than one.
If the reclamation storage pool does not have enough space to hold all of the data being reclaimed, the server moves as much of the data as possible into the reclamation storage pool. Any data that could not be moved to volumes in the reclamation storage pool still remains on volumes in the original storage pool.
The pool identified as the reclamation storage pool must be a primary sequential storage pool. The primary purpose of the reclamation storage pool is for temporary storage of reclaimed data. To ensure that data moved to the reclamation storage pool eventually moves back into the original storage pool, specify the original storage pool as the next pool in the storage hierarchy for the reclamation storage pool. For example, if you have a tape library with one drive, you can define a storage pool to be used for reclamation using a device class with a device type of FILE:
define stgpool reclaimpool fileclass maxscratch=100
Define the storage pool for the tape drive as follows:
define stgpool tapepool1 tapeclass maxscratch=100
reclaimstgpool=reclaimpool
Finally, update the reclamation storage pool so that data migrates back to the tape storage pool:
update stgpool reclaimpool nextstgpool=tapepool1收起
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