HP XP P9500 Operation Guide

Table 10 ICKDSF Commands for P9000 Disk Array Contrasted to RAMAC (continued)
Return CodeStorage SystemArgumentCommand
CC = 0P9000 disk array
CC = 12 Device not
supported for the specified
function.
RAMACREFRESHREVAL
CC = 12, F/M = 04
(EC=66BB) Error, not a data
check. Processing
terminated.
P9000 disk array
CC = 0, Data/Nodata
parameter not allowed.
RAMACDATA, NODATA
CC=0P9000 disk array
CC = 0, ALT information not
displayed.
RAMACCONTROL
CC = 0, ALT information not
displayed.
P9000 disk array
CC = 0, ALT information not
displayed.
RAMACINIT
CC = 0P9000 disk array
CC = 0, ALT information not
displayed.
RAMACREFORMAT
CC=0P9000 disk array
CC = 0, Readcheck
parameter not allowed.
RAMACCPVOLUME
CC=0P9000 disk array
z/OS (MVS) Cache operations
To display the cache statistics under MVS DFSMS, use the operator command: D SMS, CACHE.
The following example shows the cache statistics reported by the storage system. The storage
system reports cache statistics for each SSID in the storage system. Because the dynamic cache
management algorithm has been enhanced, the read and write percentages for the storage system
are displayed as N/A. For further information on MVS DFSMS cache reporting, see the IBM
documentation.
SSID DEVS READ WRITE HIT RATIO FW BYPASSES
0004 15 N/A N/A 50% 0
0005 11 N/A N/A 0% 0
0006 11 N/A N/A 87% 0
0007 10 N/A N/A 87% 0
****************************************************
SSID=SUBSYSTEM IDENTIFIER
DEVS=NUMBER OF MANAGED DEVICES ATTACHED TO SUBSYSTEM
READ=PERCENT OF DATA ON MANAGED DEVICES ELIGIBLE FOR CACHING
WRITE=PERCENT OF DATA ON MANAGED DEVICES ELIGIBLE FOR FAST WRITE
HIT RATIO=PERCENT OF READS WITH CACHE HITS
FW BYPASSES=NUMBER OF FAST WRITE BYPASSES DUE TO NVS OVERLOAD
The storage system supports the following MVS cache operations:
• IDCAMS LISTDATA COUNTS. When the <system> parameter is used with the LISTDATA
command, the user must issue the command once for each SSID to view the entire storage
system image. The following shows a JCL example of the LISTDATA COUNTS command.
//LIST JOB. . . . . .
//COUNT1 EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=A
//SYSIN DD *
LISTDATA COUNTS VOLUME(VOL000) UNIT(3390) SUBSYSTEM
LISTDATA COUNTS VOLUME(VOL064) UNIT(3390) SUBSYSTEM
30 Mainframe operations

HP XP P9500 Specifications

General

Brand	HP
Model	XP P9500
Category	Software
Language	English