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8 Troubleshooting
Hitachi Universal Replicator for IBM /OS User’s Guide
Checking Service Information Messages (SIMs)
The Hitachi USP V storage system 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 URz operations, and all SIMs are
stored on the SVP for use by Hitachi Data Systems personnel. The SIMs
reported to the 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 Hitachi USP V control window (under the Ready and Alarm LEDs) turns
on as an additional alert for the user. The Hitachi 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 Data Systems representative or the Hitachi Data Systems Support
Center.
SIMs generated by the primary storage system will include the device ID of
the primary data volume (byte 13), and SIMs generated by the secondary
storage system will include the device ID of the secondary data volume (byte
13).
Figure 11-1 shows a typical 32-byte SIM from the Hitachi USP V storage
system. 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 the value of byte 22 is 21,
the SIM is a control unit SIM. When the value of byte 22 is Dx (where x is an
arbitrary character), the SIM is a device SIM.
Table 11-5 illustrates severity of SIMs and explains whether or not USP V
reports SIMs to the host. The table also shows SVP log files.
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 11-1 Typical SIM Showing Reference Code and SIM Type