HP 3000 Manuals HP 3000 Manuals
DOWN
Removes a device from normal system use. This command does not apply to
the system console or to disk drives.
Syntax
DOWN ldev
Parameters
ldev The logical device number of the device being taken
offline.
Operation Notes
When the DOWN command is issued for a device that is in use, the request
is responded to when the process currently accessing it releases the
device.
The system console cannot be taken down. Any attempt to do so results in
the following error message:
DOWN NOT PERFORMED ON CONSOLE DEVICE (CIERR 3150)
CAUTION When any device is powered down without the use of the DOWN
command, subsequent access to that device can result in
indefinite waiting, erroneous transfers, or other incorrect
operation. Often these failures occur with no indication to the
system operator or to the user. For this reason, it is very
important that every device that is not fully operational
(especially those that are powered down) be taken down with the
DOWN command. A device that will be inoperable for more than a
few hours can be temporarily removed from the I/O configuration
at system startup.
Use
This command may be issued from a session, job, program, or in BREAK.
Pressing Break has no effect on this command. It may be used only from
the console unless distributed to users with the ALLOW or ASSOCIATE
command.
Example
To take logical device number 7 offline, enter:
DOWN 7
To take logical device number 10 (an input-spooled, job-accepting
magnetic tape) offline, enter:
DOWN 10
STOPSPOOL 10
11:16/31/SP#10/STOPPED
11:16/31/LDEV#10 NOT READY
Related Information
Commands SHOWDEV, UP, ABORTIO
Manuals Performing System Operation Tasks (32650-90137)