Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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21.21.4.11 Components Mismatch
The compatibility test is performed at a power cycle. The compatibility test verifies the microcode version of the electronics.
When the Drive detects the microcode version mismatch, the most likely cause is the result of incorrect parts used during a ser-
vice action.
If the error reported is Key/code/qualifier 4/40/80, Diagnostic failure, bring-up fail, the initiator should do the following:
1. Retry Power cycle
2. Check the send diagnostic end status. If the status is
- GOOD, Return to normal processing
- Check Condition Status, issue a Request Sense (03) and follow the recommendations for the sense data returned
unless the sense data is for a component mismatch. If the sense data is for component mismatch, service the drive
using the service guideline recommended in Section 21.21.1, “Drive Service Strategy” on page 339.
21.21.4.12 Self Initiated Reset
The Drive will initiate a self reset when the condition of the Drive cannot be determined. The internal reset will terminate any
outstanding commands, release any reserved initiators, and stop the spindle motor. The initiator can recover by
1. Logging the error
2. Retrying the failing command. If the failing command completes with:
- Good Status, return to normal processing
- Self initiated reset sense, service the drive according the guidelines recommended in Section21.21.1, “Drive Ser-
vice Strategy” on page339.
- Other, follow the recommendations for the error reported.
21.21.4.13 Defect List Recovery
This is not an error condition.
The initiator either requested a defect list in a format (block or vendor specific) that the Drive does not support or the requested
defect list(s) exceed the maximum list length that can be returned. If the Sense Key/Code/Qualifier are:
1/1F/00, the requested list(s) exceed the maximum length that can be supported. The initiator should request one list at a time.
If a single list exceeds the maximum returnable length, this may be an indication of a marginally operational drive. Service the
drive following the service guidelines in Section 21.21.1, “Drive Service Strategy” on page 339.
1/1C/01 or 1/1C/02, the requested defect list is not in the format that the Drive supports. The requested defect list is returned in
the physical (cylinder, sector, head) format. This is the default format. There is no initiator action required for this condition.