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SCSI Commands
5-150
Quantum DLT 4000 Tape Drive
SEND DIAGNOSTIC Command (1Dh) (continued)
Table 5–73 SEND DIAGNOSTIC Parameter List - Field Descriptions
Field Name
Description
Pattern Number
Indicates the type of data pattern to be used during the diagnostic tests.
Pattern
0
1
2
3
4
5
6
7
8
9 (default)
Name
Rotate
All 0s
2F
Alternating 1s and 0s
Marching 1
Marching 0
MW
MFM
IF
Random Data
Data in Hex
Rotate through the other 9 patterns;
change for each tape file.
00 00 00 00 00
FF FF FF FF FF
55 5A AA A5 55 5A AA A5
01 02 03 04 08 10 20 40 80
FE FD FB F7 EF DF BF 7F
0E 0E 0E 0E 0E 0E 0E 0E
DE AD DE AD DE AD DE AD
AA AA AA AA AA AA AA AA
Maximum Number
of Test Passes
This field specifies the number of test passes of the diagnostic to be run. If
Maximum Number of Test Passes = 0, the test will loop continuously. A
BUS RESET or a selection from the host sending an ABORT or BUS DEVICE
RESET message terminates testing. Default = 1.
Block Size
This field specifies the size of the blocks to be used. If this field is 0, random
block sizes are used. Default = 8400 bytes (DLTtape III media); 64 K
(DLTtape IV media).
Block Count
This field specifies how many blocks to WRITE / READ to and from starting
on track 0, then moving to track 1.
For example, if the Block Size and Block Count fields result in three (3)
tracks worth of data, the test will:
Write tracks 0, 1, 2
REWIND, READ, and VERIFY tracks 0, 1, 2
WRITE three tracks starting with 1: 1, 2, 3 and then REWIND to the
beginning of track 1 and perform the READ and VERIFY pass.
If Block Count is = 0, data is written until EOT is reached each time, so
almost four (4) complete passes over the tape would result. Default = 0.
Summary of Contents for DLTtape DLT 4000
Page 1: ...DLT 4000 Tape Drive Product Manual November 10 2003 81 60043 04 ...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued ...
Page 6: ......
Page 24: ...About This Manual Quantum DLT 4000 Tape Drive xxiv ...
Page 62: ...Hardware Implementation 2 28 Quantum DLT 4000 Tape Drive ...
Page 100: ...Messages 4 12 Quantum DLT 4000 Tape Drive ...
Page 264: ...SCSI Commands 5 164 Quantum DLT 4000 Tape Drive ...
Page 274: ...Appendix B EEPROM Resident Bugcheck and Event Logs B 6 Quantum DLT 4000 Tape System ...
Page 280: ...Appendix C Updating the Firmware C 6 Quantum DLT 4000 Tape Drive ...
Page 298: ...Index Index 6 Quantum DLT4000 Tape Drive ...
Page 299: ......