Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

8-8 Troubleshooting
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
SIM Reporting
The USP V reports a service information message (SIM) to the host when it is necessary to notify
the user of a possible service requirement for the storage system. The SIMs are classified
according to severity for reporting and logging purposes: service, moderate, serious, or acute.
The SVP reports all SIMs related to TCz operations, and all SIMs are stored on the SVP for use by
Hitachi personnel. The SIMs reported to the zSeries and S/390 host are logged in the
SYS1.LOGREC dataset of the host operating system. Each time a SIM is generated, the amber
Message LED on the USP V control panel (under the Ready and Alarm LEDs) turns on as an
additional alert for the user. The USP V Storage Navigator software displays the SIMs to provide
an additional source of notification for the user. Note: For further information on SIM
reporting, please contact your Hitachi representative or the Hitachi Support Center.
During TCz operations, the MCU and RCU will generate a service SIM each
time the pair status of the M-VOL or R-VOL changes for any reason, including
normal status transitions (e.g., pending duplex to duplex). For TCzA transition
states (suspending and deleting), a SIM is generated when the status changes
to the transition state, and again when the transition is complete. SIMs
generated by the MCU will include the M-VOL device ID (byte 13), and SIMs
generated by the RCU will include the R-VOL device ID (byte 13). The CU
Option dialog box allows you to configure each MCU to report or not report
service-level SIMs to the attached host(s).
Figure 8-2 shows a typical 32-byte SIM from the USP V. SIMs are displayed on
the host console by reference code (RC) and severity. The six-digit RC
(composed of bytes 22, 23, and 13) identifies the possible error and
determines the severity. The SIM type (byte 28) indicates the component
which experienced the error. When byte 22 = 21, the SIM is a control unit
SIM. When byte 22 = Dx, the SIM is a device SIM. When byte 22 = (D5-D7,
DB), the specified pair is TCzA. When byte 22 = (D8 - DC), the pair is TCz
Synchronous. The SIM reference codes DB6x, DB7x, and DB8x indicate a TCzA
pair suspended by the RCU. The SIM reference code DBFx indicates that the
M-VOL status does not match with the R-VOL status, or the capacity of the
paired volume in the RCU exceeds the licensed capacity of Volume Retention
Manager.
Byte
012345678910111213141516171819202122232425262728293031
SIM SSB
00 90 10 00 00 00
8F
E0 44 10 00 04 00
80
04 0C 69 00 00 00 00 02
30 70
05 10 42 C0
F1
00 02 00
Indicates SIM.
SSB13
RC = 307080
SSB22
,
23
SIM type
F1: DKC SIM
F2: CACHE SIM
FE: DEVICE SIM
FF: MEDIA SIM
Figure 8-2 Typical USP V SIM Showing Reference Code and SIM Type