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 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |||||
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 | |||||
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| Indicates SIM. |
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| SSB13 |
| SSB22, 23 |
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| SIM type |
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| F1: DKC SIM | |||||||
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| RC = 307080 |
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| F2: CACHE SIM | |||||||||||||
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| FE: DEVICE SIM | |||||||
FF: MEDIA SIM
Figure 11-1 Typical SIM Showing Reference Code and SIM Type
8 | Troubleshooting |
