Ldev information table, Cache information – HP XP P9500 Storage User Manual

Page 149

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Description

Item

The cache information area provides information on the P9500 cache
usage. The cache information area also indicates when prestaging
operations and cache residency operations are in progress.

Cache information

Use add data to and release data from Cache Residency cache.

Operations

Starts the requested operation(s) with or without prestaging.

Apply

Cancels the requested operation(s) and closes the dialog box.

Cancel

LDEV Information table

Items in the LDEV Information table are described in the following table.

Description

Item

Data location on the LDEV indicated by starting and ending addresses. A data
location n blue italics indicates a requested operation.

LBAs for open-systems LDEVs, CC
HH for mainframe LDEVs

Capacity of the data stored in Cache Residency cache: MB for open-systems
LDEVs, cylinders and tracks for mainframe LDEVs.

Capacity

A capacity in blue italics indicates a requested operation.

Cache Residency cache mode:

Mode

PRIO: Priority mode.

BIND: Bind mode.

-: A dash (-) indicates that the area is not allocated for Cache Residency cache.

A cache mode in blue italics indicates a requested operation.

Setting for the prestaging function:

Prestage

Blank: Indicates that the prestaging function is not set.

ON: The prestaging function is set.

A prestaging mode in blue italics indicates a requested operation.

Available number of cache extents in the specified LDEV (maximum: 4,096).

Available Cache Residency Area in
LDEV

Cache Information

Description

Item

If you are logged in to Remote Web Console as a storage administrator, this field
shows the total number of Cache Residency cache extents that can be set in the
selected CU group (maximum: 16,384).

Total Num. of Cache Residency
Areas

If you are logged in to Remote Web Console as a storage administrator, this field
shows the total capacity (in MB) of Cache Residency cache extents in the selected
CU group (maximum: 512 GB).

Total Cache Residency Cache Size

Unused Cache Residency cache area, calculated by subtracting the number of
installed Cache Residency cache extents in the CLPR from the maximum number
of Cache Residency cache extents (16,384).

Num. of Available Cache Residency
Areas

Number of Cache Residency cache extents that are used in the CLPR.

Num. of Used Cache Residency
Areas

Amount of Cache Residency cache available for use in the CLPR (pink area on
the pie chart).

Remaining Cache Residency Size

Capacity of Cache Residency cache used in the CLPR (the total of the blue and
yellow areas in the pie chart).

Used Cache Residency Size

Cache Residency Window

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