beautypg.com

Sense keys – HP C737990900 User Manual

Page 135

background image

Commands 135

Co

m

m

an

ds

about to be transferred, or was being transferred. If an error subsequently

occurs while trying to complete the read, the sense generated is a

DEFERRED

ERROR

. It is therefore possible but highly unlikely to have

DEFERRED ERROR

sense flagged for a command without immediate report.

Sense Keys

The following table lists the sense keys that may be returned by HP Ultrium

drives. SCSI sense keys are 4-bit codes returned in the sense data. They

indicate in what general area the problem that has just been experienced falls.

For a clearer indication of the nature of the problem, refer to the additional

sense code.

Code

Name

Description

ASC/Qs

0h

NO SENSE

There is no real problem. The sense information is

probably indicating some condition (such as encountering

a filemark).

0000h, 0001h, 0002h,

8282h

1h

RECOVERED ERROR Returned if a Mode Select parameter is truncated or if a

TapeAlert event is being reported.

5D00h, 3700h

2h

NOT READY

The drive is not in a state to be able to execute the request.

See also the Media Access check.

0400h, 0401h, 0402h,

3003h, 3007h, 3A00h,

3E00h

3h

MEDIUM ERROR

The command failed, believed to be caused by a problem

with the tape.

0002h, 0004h, 0407h,

0410h, 0C00h, 1100h,

1102h, 1400h, 3001h,

3002h, 3004h, 3100h,

3B00h, 5000h, 5200h,

5300h

4h

HARDWARE ERROR The command failed, believed to be caused by a problem

with the drive hardware.The FRU in the sense data should

indicate which part of the hardware is faulty.

0403h, 40XXh, 4400h,

5100h, 5300h

5h

ILLEGAL REQUEST

The last command sent to the drive or the data associated

with the command violated conditions imposed by the

drive on its acceptance. See also the Illegal Command,

Illegal Field, Fixed Bit, Reservation and Parameter List pre-

execution checks.

1A00h, 2000h, 2400h,

2500h, 2600h, 2601h,

5302h, 8283h

6h

UNIT ATTENTION

Indicates some condition of which the host needs to be

made aware. See also the Unit Attention check.

2800h, 290Xh, 2A01h,

3F01h, 5DFFh

7h

DATA PROTECT

A request has been made to modify the media despite the

media being write-protected. See also the Media Write

check.

2700h, 3000h