DLT4000 SCSI Interface
8-118 DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem
Table 8-9
Definition of Pattern Numbers
Pattern
Name
Data in Hex
0
Rotate
(Rotate through the other 9 patterns,
change for each tape file)
1
All 0's
00 00 00 00 00
2
2F
FF FF FF FF FF
3
Alternating 1's and 0's
55 5A AA A5 55 5A AA A5
4
Marching 1
01 02 04 08 10 20 40 80
5
Marching 0
FE FD FB F7 EF DF BF 7F
6
MW
0E 0E 0E 0E 0E 0E 0E 0E
7
MFM
DE AD DE AD DE AD DE AD
8
1F
AA AA AA AA AA AA AA AA
9
Random Data
If the Max Number of Passes is zero, this indicates to loop forever. A BUS Reset or a
selection from the host sending an Abort or a Bus Device Reset message will
terminate testing.
If the Block Size field is set to zero, random block sizes will be used.
The Block Count field specifies how many blocks to write/read starting first on track
0, then again on track 1. So if the Block Size and Count fields result in 3 tracks worth
of data, the test will:
•
Write tracks 0, 1, 2
•
Rewind, read, and verify 0, 1, 2
•
Write 3 tracks starting with 1: 1, 2, 3 and then rewind to the beginning of track 1
and do the read/verify pass. If Block Count is set to zero, data will be written until
EOT is reached each time, so almost 4 complete passes over the tape would result.
_________________________ NOTE ____________________________
Because of data generation and verification, this test only streams the tape
for short periods of time. Therefore, if Block Count is set very high, this
test can take many minutes or even many hours to complete.
___________________________________________________________
If the specified test passes, a GOOD STATUS is returned. Otherwise, a Check
Condition is generated, and the Sense Data will contain information about the failure.
Summary of Contents for DLT 4700
Page 1: ...DLTTM 4000 DLTTM 4500 DLTTM 4700 Cartridge Tape Subsystem Product Manual...
Page 2: ......
Page 160: ...Firmware Update From Tape 7 18 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 215: ...DLT4000 SCSI Interface DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 8 55...
Page 304: ...DLT4000 SCSI Interface 8 144 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 342: ...Sense Key Information C 6 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 359: ...Index DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 7...
Page 360: ...Index 8 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...