User`s manual

IOC - I/O Control for Disk
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IOC - I/O Control for Disk
Command Input
IOC
Description
The IOC command sends command packets directly to a disk
controller. The packet to be sent must already reside in memory
and must follow the packet protocol of the particular disk
controller. This packet protocol is outlined in the documentation for
the SCSI controller (refer to Appendix A, Related Documentation).
This command may be used as a debugging tool to issue commands
to the disk controller to locate problems with either drives, media,
or the controller itself.
When invoked, this command prompts for the controller and drive
required. The default controller LUN (CLUN) and device LUN
(DLUN) when IOC is invoked are those most recently specified for
IOP, IOT, or a previous invocation of IOC. The command also
prompts for an address where the controller command is located.
You may change the displayed value by typing a new value,
followed by the Return key. To leave the field unaltered, press the
Return key without typing a new value.