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• Error indicators for microcode and media type problems. These allow detection and reporting of
microcode and media type problems
• Error records are captured and recorded in a drive error log
• All drive electronics are contained within the drive canister FRU
• Design of power supply for easy removal and replacement without removing power (hot-pluggable)
• Limited number of FRUs in subsystem
• Special utilities for IBM support service that is built into drive
• Easy-to-view LEDs on drive canister for fibre status, power good, and fault indications
• Compact package
• Can be serviced by one CE
• All procedures can be accessed from your laptop, through an ethernet port
Maintenance strategy
The 3592 maintenance strategy does not use diagnostic tests for problem recreation. The hardware and
microcode are designed to capture and isolate failures when they occur. The fault symptom code (FSC)
generated either by the functional microcode or diagnostic microcode is converted into a FRU identifier
(FID). This FID is available to the operator and the service representative. They are in the form of service
information messages (SIMs) or media information messages (MIMs) in systems where these functions
are supported. If the host system does not support SIMs and MIMs, sense data is available if the
subsystem is able to present it. In addition, the FID is displayed on the 3592 operator message display
and service panel, and it is placed into the drive error log.
When a permanent error occurs or an error is detected by the test, a SIM is generated and a flag is set in
the SCSI sense data. This flag informs the host system that information about the error is read from the
drive and displayed to the operator. Only a permanent error causes a FID to be displayed on the front
operator panel or the service panel.
The maintenance strategy for the 3592 drive includes these items -
• Provides for SIM/MIM and TapeAlert reporting
• Concurrent maintenance is possible.
• Each 3592 drive can be removed without powering OFF any other 3592 drives.
• The drive is not designed for customer setup (CSU).
• The error logs record as many as 30 machine error entries.
• The FID 87 and FID FF logs contain up to 10 entries for a record of sense data sent to the host with a
FID of 87 or FF.
• Temporary error logs contain as many as 10 entries for errors, with sense key of 1.
• The drive is not intended to be serviced or disassembled in the field.
FID strategy
With the FID code concept, the maintenance documentation does not list FSC codes, only FID codes. Each
microcode EC level has a conversion table that reflects additions or deletions in the FSC codes. The FSC-
to-FID conversion table is updated and maintained for that specific microcode level without the need to
correct documentation. More than 2000 FSCs are connected to FIDs.
Host messages
The Statistical Analysis and Reporting System (SARS) creates service information messages (SIMs) and
media information messages (MIMs) which are incorporated into the 3592. These messages provide the
22 IBM 3592 TS1140, TS1150, TS1155, and TS1160 Tape Drives: Maintenance Information
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