IBM DS8000 manual New performance statistics, 285

DS QD,9882,RDC,DCE
IEE459I 11.36.47 DEVSERV QDASD 053
UNIT VOLSER SCUTYPE DEVTYPE	CYL	SSID SCU-SERIAL	DEV-SERIAL EF-CHK
9882 IN9882 2107921 2107000 65520		1011 0113-00511	0113-00511 **OK**
READ DEVICE CHARACTERISTIC
2107E833900A5E80 FFF72024FFF0000F E000E5A205940222			1309067400000000
0000000000000000 24241F02DFEE0001 0677080F007F4A00			003C000000000000
DCE AT V020D8A30
3878807100C457C0 00000000024B60D0 D800FFF0FFEF2424			1FF70800004A0000
00FC24DC9400F0FE 021F3C1E00038000 0000000000000000

****1 DEVICE(S) MET THE SELECTION CRITERIA

****0 DEVICE(S) FAILED EXTENDED FUNCTION CHECKING

Figure 13-1 Display output from DEVSERV QDASD command

Figure 13-2displays output from the DEVSERV PATHS command, which shows the device type as a 2107.

DS P,9882
IEE459I 11.38.36 DEVSERV PATHS 055
UNIT DTYPE	M CNT VOLSER	CHPID=PATH STATUS
RTYPE	SSID CFW TC	DFW	PIN	DC-STATE CCA		DDC	ALT CU-TYPE
9882,33903	,O,000,IN9882,29=+ 2B=+
2107	1011 Y YS.	YY.	N	SIMPLEX 02		02	2107
************************ SYMBOL DEFINITIONS					************************
O = ONLINE			+ = PATH		AVAILABLE

Figure 13-2 Display output from DEVSERV PATHS command

The following DFSMS components and products are updated to recognize real control unit and real device identifiers:

￿Device support - system initialization

￿DFSMSdss

￿System Data Mover (SDM)

￿Interactive Storage Management Facility (ISMF)

￿Device Support Facility (ICKDSF)

￿DFSORT

￿EREP

13.2.7New performance statistics

There are two new sets of performance statistics that will be reported by the DS8000. Since a logical volume is no longer allocated on a single RAID rank with a single RAID type or single device adapter pair, the performance data will be provided with a new set of rank performance statistics and extent pool statistics. The RAID RANK reports will no longer be reported by RMF and IDCAMS LISTDATA batch reports. RMF and IDCAMS LISTDATA is enhanced to report the new logical volume statistics that will be provided on the DS8000. These reports will consist of back-end counters that capture the activity between the cache and the ranks in the DS8000 for each individual logical volume. The new rank and extent pool statistics will be disk-system-wide instead of volume-wide only.

Chapter 13. zSeries software enhancements 285