Sony SDX-900V Series, Технические характеристики

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7.Drive Diagnostics
SONY AIT-4 drive SDX-900V series Ver.2.1
7-3
In SCSI-2 mode, the Page Format (PF) bit is one, and the Parameter List Length is 9, the Parameter List in this case
is 9 bytes long and will be of the form:
Table 7-2: SEND DIAGNOSTIC Parameters - SCSI-2
Bit
Byte
7 6 5 4 3 2 1 0
0 Page Code (81h)
1 Reserved
2 (MSB) Page Length (00 05h)
3 (LSB)
4 Diagnostic Test Number
5 Break Loop Count Identifier
6 Parameter A
7 Parameter B
8 Parameter C
Break: Indicates how to terminate the loop count should an error occur.
0 = stop on first error
1 = do not stop on error
Loop Count Identifier: The number of times that the test should be repeated before status is returned.
0 = run once
1 = run once
2 = run 10 times
3 = run 100 times
4 = run 1000 times
Parameters A, B, C: Any additional parameters required to fully define the diagnostic test. These parameters are
unused and shall be 00h.
7.2.4.
Diagnostic Test Number Summary
The following is a list of the diagnostic capabilities of the SDX-900V. The Test Availability Code indicates if a
particular test can be executed by the Host computer or is executed during Power-on diagnostics (or both). The drive
also supports three types of diagnostics:
1. Individual Tests - Self contained modules designed to test a particular function of drive
2. Sequences - Automatic execution of a series of individual tests
3. Exercisers - Verification of a major function of the drive such as Read, Write, Search, etc.
The Diagnostic Test Number for each Test, Sequence or Exerciser is shown in the first column.
Test Availability Codes
P ─ Power–on Self–test
H ─ Host Diagnostics
PH ─ both