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Error Set 2-Diagnostic Errors
02h
06h
07h
11h
12h
14h
15h
20h
25h
26h
27h
8.2.7.
Diagnostic Tests Requiring Additional Parameters
The diagnostic tests which require additional information in the Parameter A, B & C bytes are:
02
Error Rate Test
43
Read Data Exerciser
Error Rate Test (02) Diagnostic Parameters
This test reads or writes the number of groups defined by the Group Count. Any RAW retries, C3 ECC retries and
Read/Write hard errors encountered during the test are reported in the Error Rate Log which may then be
examined to determine tape performance.
Bit
7
Byte
0
1
2
Test Pattern
3
(MSB)
4
The Test Pattern and RND fields are only relevant if the test includes a write pass, otherwise their values are
ignored.
Test Pattern:
0 - all ZEROs
1 - All ones
2 - Alternating ones and ZEROs
3 - Rotating data bytes (0,1,2,...,255)
4 - Pseudo-random data
5 - Worst case (C6h) bytes
BOT:
0 - Space to EOD before beginning write test
1 - Rewind to BOT before beginning read or write test
RND:
0 - Randomizer is disabled during test
1 - Randomizer is enabled during test
WRT & RD control bits: The following table shows the operation of the Error Rate Test with different
combinations of the WRT & RD bits.
SONY AIT-2 drive SDX-570V series Ver. 1.0
MAIN PROCESSOR ROM CHECK SUM TEST FAILURE
MAIN PROCESSOR DESTURCTIVE RAM TEST FAILURE
MAIN PROCESSOR NON DESTRUCTIVE RAM TEST FAILURE
EEPROM CHECKSUM TEST FAILURE
BUFFER RAM TEST FAILURE
INTERNAL MESSAGE BUS TEST FAILURE
DATA COMPRESSION DMA LINE TEST FAILURE
MECHANISM CONTROLLER MICROPROCESSOR TEST FAILURE
BOT SENSOR TEST FAILURE
EOT SENSOR TEST FAILURE
BOTH BOT/EOT SENSOR TEST FAILURE
Table 8-5: Error Rate Test Data
6
5
4
Diagnostic Test Number (02h)
BOT
3
2
Loop Count
RND
WRT
Group Count
8. Drive Diagnostics
1
0
RD
NLR
(LSB)
8-7
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