Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
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- Abort command sense, then service the drive using the service guideline recommended in Section
20.15.1 "Drive Service Strategy".
- Sense Key = B (Aborted Command) and an Additional Sense Code of 47 can be an initiator or Drive caused
abort condition. The initiator should follow the above procedure for initiator caused abort conditions if the Drive
detected the SCSI bus parity error. The initiator should follow the above procedure for Drive caused abort
conditions if the initiator detected the SCSI bus parity error.
20.15.4.10
Unit Attention Condition
Unit Attention Conditions are not errors. They alert the initiator that the drive had an action that may have changed
an initiator controlled state in the drive. These conditions are the following:
Not Ready to Ready Transition
Not ready to ready transition, unit formatted. This Unit Attention Condition will not be reported to the initiator that
issued the Format Unit (04).
Reset
Reset - This means the drive was reset by either a power-on reset, Hard Reset, LUN Reset TMF or an internal reset.
Mode Parameters Changed
A Mode Select (15) command successfully completed. This means that the mode parameters that are the current
value may have changed. The parameters may or may not have changed but the command to change the
parameters successfully completed. The Drive does not actually compare the old current and the new current
parameters to determine if the parameters changed. This Unit Attention Condition will not be reported to the initiator
that issued the Mode Select (15).
Microcode Has Changed
Write Buffer (3B) to download microcode has successfully completed. This means that the microcode that controls
the Drive has been changed. The code may or may not be the same as the code currently being executed. The Drive
does not compare old level code with new code.
Commands Cleared by Another Initiator
Tagged commands cleared by a clear queue message. This means that the command queue has been cleared. The
Unit Attention Condition is not reported to the initiator that issued the clear queue message. Unit Attention Condition
is reported to all initiators that had commands active or queued.
Reissue any outstanding command.
Log Select Parameters Changed
A Log Select (4C) command successfully completed. This means that the Log Select command cleared statistical
information successfully (See Section 18.6 "LOG SELECT (4C)"). Unit Attention Condition is reported to all initiators
excluding the initiator that issued the Log Select command.
Device Identifier Changed
A Set Device Identifier (A4) command successfully completed. This means that the Set Device Identifier information
field has been updated. (See 18.42 ”SET DEVICE IDENTIFIER (A4/06)”) A Unit Attention Condition is reported to all
initiators excluding the initiator that issued the Set Device Identifier command.
20.15.4.11
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 service 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 20.15.1 "Drive Service Strategy".