Optical Drive and Library SCSI-2 Command Reference

Disconnect Timeout Settings
Disconnect Timeout Settings
Appendix EE-2
Disconnect Timeout Settings
The following commands will cause a SCSI disconnect. It is useful to
know what the maximum times for disconnect are so driver timeouts can
be set appropriately.
NOTE In Table E-1 the maximum disconnect time is represented by the nominal
number of seconds plus the number of levels of error recovery times 60.
You can see the maximum time can be very long. An appropriate timeout
may be a compromise between the nominal time and maximum time.
Table E-1 Timeout Settings
Command Nominal
Disconnect
Time
(seconds)
Maximum
Disconnect
Time
Levels of
Error
Recovery
Exchange Medium 14 600 sec 6
Initialize Element
Status
120 600 sec 6
Move Medium 5 600 sec 6
Position To Element 5 600 sec 6
Prevent/Allow Media
Removal
10 600 sec 6
Read Element Status
120
a
600 sec 6
Release 10 600 sec 6
Reserve 10 600 sec 6
Rezero Unit 120 600 sec 6
Send Diagnostic
600
b
600 sec 6
Rotate 5 600 sec 6