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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

Controller Present Flag

Controller Error ASQ

Drive Present Flag

Drive Error ASQ

4 — 7 MB Written

8 — 11 Total Write Errors

12 — 15 MB Read

16 — 19 Total Read Errors

Drive Health Check Status

Media Health Check Status

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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