IBM Magstar MP 3570 C Series, Информация по обслуживанию

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Statistical Analysis and Reporting System
The statistical analysis and reporting system (SARS) assists in determining whether read and write errors
are caused by the media (tape) or the hardware in the drive and provides SIMs, MIMs, and/or media
isolation messages. To analyze errors, the 3570 microcode contains a volume SARS (VSARS) algorithm
and a hardware SARS (HSARS) algorithm.
The algorithms are executed in the 3570 just before a tape is unloaded. The HSARS data is stored in
nonvolatile storage in the drive and the VSARS data is stored in the volume control region (VCR) on the
tape.
To distinguish error patterns and trends, the SARS volume algorithms require the tape to be mounted on
different drives while the SARS hardware algorithms require different volumes to be mounted on one drive.
As degraded hardware passes through predefined error thresholds, cleaning and service repair messages
and/or error codes are presented. Similarly, if tape volumes continue to perform poorly on different drives,
re-write or discard-media messages are presented.
| The current default value for SARS options is ON for microcode level D1I5 and higher. SARS options
| must be enabled to take full advantage of media error isolation via MIMs and some SIMs. You can enable
| or disable SARS options from “CE Drive Features Menu” on page PANEL-40.
Obtaining 3570 Drive Error Information at the Host
IBM device drivers for the RS/6000 and AS/400 systems log service information messages (SIMs and
MIMs) when an error occurs on a 3570 drive.
| Note: Sun, HP-UX and Winndows NT systems do not log SIM/MIM data.
The SIM includes the following error information:
| 1. Which drive the SIM refers to.
2. The FRU identifier (FID) code and FID severity for Drive errors. The FID is used to enter the START
section where it specifies the failing FRU group.
3. The message code presented to the customer. See “Message Codes” on page MSG-11.
4. The first FSC, second FSC or flag bytes, model and microcode link level are not required to enter the
START section. This support data may be requested by your next level of support.
The MIM includes the following error information:
1. The message code presented to the customer. See “Message Codes” on page MSG-11.
| 2. VOLSER of the cartridge which is having a problem.
3. The first FSC and model and link level are not required to enter the START section. This support data
may be requested by your next level of support.
This information is used to service the 3570 drive and can also be obtained directly from the library
display. The PANEL section describes the 3570 display.
MSG
Messages
MSG-3