Hitachi Cache Manager User's Guide (HIT1642-96001, June 2007)

Performing Cache Manager Operations 4-9
Hitachi Cache Manager User’s Guide
Using STATUS to Display the Cache Status
The STATUS command displays volume or dataset status information,
including the size of the cache memory, the residence area of the cache
extents, and the extent of the dataset statistics information. See the glossary
for status definitions.
Figure 4-9 illustrates STATUS command parameters.
• You can specify target data by DDNAME, (using volume, unit and disp
number), VOLUME (volume serial number) or DEVICE (device number).
• You can specify a target data range as either DKU (a volume defined by
DDNAME or volume) or DKC (all volumes in the same storage system ID).
(DKU is the default value.)
• EXTENT specifies that cache extent information will be printed.
• NOEXTENT specifies that cache extent information will not be printed.
(NOEXTENT is default value.)
• DSEXTENT specifies that extent information of dataset statistics will be
printed. If this is combined with a DKC command, you must also define
RAIDPARM.
DDNAME (dd name)
VOLUME (volume serial number)
DEVICE (device number)
[ DKU | DKC ]
[ EXTENT | NOEXTENT | DSEXTENT ]
Figure 4-9 STATUS Command Parameters
Figure 4-10 is an example of a cache memory STATUS report.
** CACHE MANAGER UTILITY (P-9Y2R-J91Y1 01-02-07) ** LISTING INFORMATION 2000-03-23,
10:01:05 PAGE 0001
STATUS VOL (RAID31) DKC
CACHE SUBSYSTEM STATUS REPORT
DISK CONTROLLER INFORMATION
CU-TYPE---- 3990-3 SSID---- X’0080’ DEVICE ADDRESS---- X’01’
CACHE NVS PINNED DATA
STATUS ENABLED ENABLED NONE
FLASH ACCESS CONFIGURATION REMAINING AREA 2097152
USED AREA 2097152
FLASH ACCESS AVAILABLE 4194304
USED AREA COUNT 1024
Figure 4-10 Cache Memory STATUS Report