Test Unit Ready Command (00H) - Quantum DLT 8000 Product Manual

SCSI Commands

5.29 TEST UNIT READY Command (00h)

The TEST UNIT READY command checks the tape drive to ensure that the unit is ready
for commands involving tape movement. If the drive has a tape loaded, the command
returns a GOOD status. Otherwise, CHECK CONDITION is reported.
Due to power cycle, code update, and tape loaded conditions, it is possible to get
multiple check conditions on a TEST UNIT READY command.
Bit 7
Byte
0
1 Logical Unit Number
2 - 4
5 Unused
Figure 5–100 TEST UNIT READY Command Descriptor Block — Data Format
5-218
6 5
Operation Code (00h)
Quantum DLT 8000 Tape System
4 3
Reserved
Reserved
Reserved
2 1
Flag Link
0