Partitions and CAPs
Partitions and CAPs
The cells within each CAP can be allocated or unallocated individually to partitions. This allows for the following possible CAP configurations:
■Common CAP
■Split CAP
Note – Split CAPs are available to the SL500 only.
Common CAP
In a common, or unassigned, CAP, all cells in the CAP are left unallocated and can be used by any partition that does not have any CAP cells allocated to it. CAP cells are common by
A common CAP is a shared library resource. Each host must select a common CAP to use it and must release the CAP when done, to make it available to other hosts. No other host can access the CAP until the first host has completed the operation and released the CAP. For additional details, see “CAP Operations” on page 151.
Split CAP
In a split CAP, the cells in the CAP are allocated to one or more partitions. Each individual CAP cell can be allocated to one partition only. Cells in a split CAP can be allocated in any of the following ways:
■All cells can be allocated to one partition.
■All cells can be distributed among multiple partitions. For example, in an
■Some cells can be allocated to one partition and the remainder left unallocated, or common. For example, in an
When configuring a split CAP, you must plan carefully for anticipated CAP usage. A partition with allocated CAP cells can use the cells allocated to it only. It cannot use CAP cells allocated to other partitions, nor can it use common CAP cells.
CAP Operations
In a partitioned library, it is recommended that you assign partitions to the CAP Open button on the library control panel prior to pressing the button to open the CAPs.
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