JKT DAS Shutdown Procedures

There are three procedures, one to shut down the lpss12 computer only, another for the other sparcs and a procedure to shutdown all the computers in the JKT.

To powerdown lpss12 only This must be done whenever lpss12 needs to be rebooted.

To shut down other sparcs eg lpss11 only

To shut down the whole system Useful for a UPS shutdown, etc.

Unix computers (eg Sun sparcs) must never be turned off - always follow the procedures - otherwise disk corruption can occur.

Because the DataCell card driver has a bug the DAS computer lpss12 must be turned off at the mains whenever it is rebooted.

The sparc mains switches are located at the back right hand side top (note that you are looking at the back). They can be switched on by this button or the keyboard key top right marked with a circle and vertical line.

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To powerdown lpss12 only

1. Shutdown lpss12 by logging in as user shut and using the usual password.
2. Wait until shutdown is complete and you get the OK prompt.
3. Poweroff lpss12 using the mains switch at the back.
4. Turn off the fox rack which is located under lpss12.
5. If rebooting it is not necessary to power off the disk drives and DAT tapes. These should be switched off before moving the computer.

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To powerdown single computer eg lpss11

1. Shutdown the sparc by logging in as user shut and using the usual password.
2. Wait until shutdown is complete and you get the OK prompt.
3. If rebooting it is not necessary to power off the sparc.

If necessary then power off the sparc using the mains switch at the back and switch off the disks and DAT tape drives.

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To shut down the whole system

1. Power off lpss11 using the powerdown a single computer procedure and switch it off and the disk and DAT drives.
2. Power off lpss12 using the powerdown lpss12 only procedure and switch off the disks and DAT drives.
3. Switch off the fox rack located next to the sparc lpss12.

JKT home page | Roger Edwards | Software Controls Systems Group | Isaac Newton Group
Page created by Roger Edwards on 13/02/97.