IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive, Specifications

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REQUEST SENSE Executes the command, returns a Sense key of N O T R E A D Y and an Additional
Sense Code of LOGICAL U N I T N O T R E A D Y and returns G O O D STATUS.
The Additional Sense Code Qualifier that is returned depends on type of I/O proc-
esses that are active:
For the START/STOP U N I T and the Auto-start operation, the qualifier returned is
LOGICAL U N I T IS IN PROCESS O F B E C O M I N G READY. For the F O R M A T
U N I T
command, the qualifier returned is LOGICAL U N I T N O T
R E A D Y , F O R M A T IN PROGRESS, and the Sense key specific bytes are set to
return the progress indication.
ALL OTHER The file terminates the command with C H E C K C O N D I T I O N status. The Sense
data generated is described in Request Sense above.
11.1.7 Internal Error Condition
The Target generates an Internal Error condition for all Initiators when:
an internally initiated operation ends with an unrecoverable error. i.e. The start-up sequence for Auto
Start enabled terminates after the SCSI bus has been enabled and prior to completion of the bring-up
sequence.
An Internal Error condition causes Sense data to be generated and saved for all Initiators. The Error Code
field of the Sense is set for a Current Error(70h) and the Sense Key is set to H A R D W A R E E R R O R .
Recovered errors are not reported.
The Internal Error condition persists for each Initiator until that Initiator clears the condition from the
logical unit as described below.
Several commands are handled as special cases during an Internal Error
condition. These cases are also discussed.
If the Target receives a command from an Initiator while an Internal Error condition exists for that Initiator,
the Target's response varies with the command as follows:
INQUIRY The file executes the command with G O O D status and do not clear the Internal Error
condition.
REQUEST SENSE The file executes the command, return the sense data generated by the Internal Error
condition, return Good Status, and clear the Internal Error condition for that Initiator.
ALL OTHER The file terminates the command with a C H E C K C O N D I T I O N status and clear the
Internal Error condition.
11.1.8 Deferred error
Error code (71h) of sense data indicates that the Check Condition status returned is the result of an error or
exception condition that occurred during execution of a previous command for which Good status has
already been returned.
The drive creates an Deferred Error condition when :
Execution of a Start/Stop Unit command with the immediate bit of one ends with an error.
Execution of a Format Unit command with the immediate bit of one ends with an error.
Execution of a Write command with WCE (write cache enable) bit of one ends with an error.
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O E M Spec. of DCAS-34330/32160