Cache logical partition operations, Creating a cache logical partition – HP StorageWorks XP Remote Web Console Software User Manual
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Cache Logical Partition Operations
Creating a Cache Logical Partition
If you have not created only one CLPR yet, entire cache is indicated CLPR0 in the Partition Definition
window. To partition the cache, create a CLPR. The created CLPR can be allocated to each SLPR. The
CLPR(s) can be created in a SLPR that you selected.
Note:
Only the storage administrators can create the CLPRs. The storage partition administrators are
not permitted to create CLPR.
Note:
If a CLPR is created, the default value of the cache size is 4 GB. To create a CLPR, the desired size
of cache is allocated from CLPR0 (entire cache).
Note:
To create a CLPR, the remaining cache size which is calculated by subtracting Cache Residency
Size and Partial Cache Residence size from the cache size of CLPR0 needs 8GB or more.
To create a CLPR:
1.
Right-click an SLPR on the tree in the Partition Definition window to display the pop-up menu.
2.
Select Create CLPR in the pop-up menu to add a CLPR to the tree.
3.
Select a CLPR from the tree. The detailed information for selected CLPR is displayed in the Detail
For CLPR field in the Partition Definition window.
4.
Change the settings of CLPR as needed (see “
The Cache Logical Partition Window
5.
Click Apply to apply the settings. The progress bar is displayed.
Note:
Even though you clicked Apply, the parity groups have not been allocated to
a CLPR yet. To allocate the parity groups to a CLPR, migrate the parity groups from
other CLPR, usually CLPR0. For information on how to migrate the parity groups, see
Migrating Resources To and From Cache Logical Partitions
Note:
To change the settings of an existing CLPR, repeat procedures from
on page 35 to
Migrating Resources To and From Cache Logical Partitions
The parity groups in the CLPR can be migrate to another CLPR.
Note:
The plural parity groups which construct the concatenated parity groups must belong to the
same CLPR.
Note:
The parity group that contains the LDEVs to which the Cache Residency cache extents is defined
cannot migrate to another CLPR.
To migrate the parity groups in a CLPR to another CLPR:
1.
Double-click the SLPR on the tree in the Partition Definition window to display the CLPRs. CLPRs
are displayed under the specified SLPR on the tree.
2.
Select a CLPR from the tree. The CLPR resource list of the specified CLPR is displayed.
Note:
: By using the CU Select button on the upper right of the Partition Definition window, you
can specify the desired CU. To specify the CU:
a.
Click CU Select on the upper right of the Partition Definition window. The CU Select dialog
box is displayed (see
b.
Click the Specific CU or Unallocated radio button. If you click the Unallocated radio button,
skip to step
c.
Select the LDKC from the LDKC: drop-down list and the CU from the CU: drop-down list
respectively.
d.
Click Set. Only the information for the selected CUs in the CLPR resource list.
3.
Select the parity group(s) that you want to migrate from the CLPR resource list and right-click the
list to display the pop-up menu.
Note:
You can select the multiple parity groups.
4.
Select Cut from the pop-up menu.
XP24000 Disk/Cache Partition User's Guide
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