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Read attribute 8ch, Read attribute 8ch 99, Pre-execution checks – HP C737990900 User Manual

Page 99: Command descriptor block

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Commands 99

Co

m

m

an

ds

READ ATTRIBUTE

8Ch

The

READ ATTRIBUTE

command allows an application client to read attribute

values to MAM (Medium Auxiliary Memory) and also to discover what MAM

exists at the device server.

Pre-Execution Checks:

If the MAM is not accessible because there is no tape in the drive,

CHECK

CONDITION

is reported with a sense key of

NOT READY

and additional sense

of 3A00h (medium not present).
If the MAM is not accessible even though a tape is in the drive,

CHECK

CONDITION

is reported with a sense key of

MEDIUM ERROR

and additional

sense of 0410h (Media Auxiliary Memory is not accessible).
If the MAM has failed,

CHECK CONDITION

is reported with a sense key of

MEDIUM ERROR

and additional sense of 1112h (Media Auxiliary Memory

read error).

Command Descriptor Block:

Illegal Field

Fixed Bit

Flag Link

Bad LUN

Reservation

Deferred Error

Unit Attention

Media Access

Diagnostic Status

7

6

5

4

3

2

1

0

0

Operation Code (8Ch)

1

Reserved (0)

Service Action

2

(MSB)

Element Address (0)

3

(LSB)

4

Element Type Code (0)

5

Volume Number (0)

6

Reserved (0)

7

Partition Number (0)