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

Performing Cache Manager Operations 4-5
Hitachi Cache Manager User’s Guide
Using COUNTS to Display Cache Volume or Dataset Statistics
The COUNTS command allows you to get statistics on cache memory usage
and status information. Note: Be sure to reset the counter before accessing
cache statistic information.
WARNING: If other applications are using the cache statistics information,
resetting the counter will interfere with those operations.
The COUNTS command will display either volume or dataset statistics.
• You can specify the target data by DDNAME (using volume, unit and disp
number), VOLUME (volume serial number), or DEVICE (device number).
• REPORT is a command to print cache statistics information. (REPORT is
the default value.)
• NO REPORT is a command to not print cache statistics information.
• RESET will reset the counter to zero.
• NO RESET will leave the counter unchanged. (NORESET is the default
value.)
• DKU specifies a target range as a particular volume. (DKU is the default
value.)
• DKC specifies a target range in the same storage system ID (SSID). You
need to specify RAIDPARM in the DD statement.
• DSEXTENT specifies that dataset statistics information will be included.
Note: If you use DSEXTENT, do not use the RESET parameter.
• NOEXTENT specifies that volume statistics information will be included.
(NOEXTENT is the default value.)
DDNAME (dd name)
VOLUME (volume serial number)
DEVICE (device number)
[ REPORT | NOREPORT ]
[ RESET | NORESET ]
[ DKU | DKC ]
[ DSEXTENT | NOEXTENT ]
Figure 4-4 COUNTS Command Parameters