SIMs can be generated by the host I/O modules and back-end I/O modules
and by the SVP. All SIMs generated by the HUS VM are stored on the SVP for
use by Hitachi Data Systems personnel, displayed by the Storage Navigator
software, and reported over SNMP to the open-system host. The SIM display
on Storage Navigator enables users to remotely view the SIMs reported by
the attached storage systems. Each time a SIM is generated, the amber
Message LED on the control panel turns on. The Hi-Track remote
maintenance tool also reports all SIMs to the support center
SIMs are classified according to severity. There are four levels: service,
moderate, serious, or acute. The service and moderate SIMs (lowest severity)
do not require immediate attention and are addressed during routine
maintenance. The serious and acute SIMs (highest severity) are reported to
the host system once every eight hours.
Note: If a serious or acute-level SIM is reported, call the support center
immediately to ensure that the problem is being addressed.
The following figure illustrates a typical 32-byte SIM from the HUS VM
storage system. SIMs are displayed by reference code (RC) and severity. The
six-digit RC, which is composed of bytes 22, 23, and 13, identifies the
possible error and determines the severity. The SIM type, located in byte 28,
indicates which component experienced the error.
Figure 6-1 Service information message
Troubleshooting
6-3
Hitachi Unified Storage VM Block Module Hardware User Guide
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