Quantum DLT-S4 Guia do Utilizador Página 311

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Chapter 4 SCSI Commands
RECEIVE DIAGNOSTIC RESULTS Command (1Ch)
DLT-S4 Interface Reference Guide 277
Figure 138 RECEIVE
DIAGNOSTIC RESULTS
Data Format
This information indicates which of the main components of the DLT-S4
tape drive subsystem may have failed diagnostic testing. For the Level 1
Electronics test, the first four fields are set to 1 and the second four fields
are set to 0. For the Level 2 Write / Read Functionality test, the first four
fields are set to the defaults of 1, 0, 1, and 0 respectively, and the second
four fields are set to the read and write statistics that the test collected.
Bit
7 6 5 4 3 2 1 0
Byte
0
Controller Present Flag
1
1
Controller Error ASQ
2
2
Drive Present Flag
1
3
Drive Error ASQ
2
4 — 7 MB Written
8 — 11 Total Write Errors
12 — 15 MB Read
16 — 19 Total Read Errors
20
Drive Health Check Status
3
21
Media Health Check Status
3
Notes:
1. Controller and Drive Present Flags: 1 = Present; 0 = Not present.
2. Controller and Drive Error ASQs: 0 = No error; Non-zero = Error.
3. Contains the highest severity TapeAlert flag set against the drive or media.
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