topic Re: Checking disk failure from the system in Operating System - OpenVMS

Checking disk failure from the system

IFX_1 — Sun, 10 Sep 2006 22:53:25 GMT

I have a disk failure w/c showing amber lights blinking, how can I check it from the system which particular disk is defective?

THanks.

Re: Checking disk failure from the system

Karl Rohwedder — Sun, 10 Sep 2006 23:56:42 GMT

Ronald,

you know the bus and unit umber of the disk from VMS (SHOW ERROR, DIAGNOSE...). Raid controllers and such often have a LOCATE function, which activates the LED on the disk to find it.
A simple apporoach is to just do some IO (ANA/DISK/READ) to the disk or its neighbors and check for the activity LED.

regards Kalle

Re: Checking disk failure from the system

Andy Bustamante — Mon, 11 Sep 2006 01:56:38 GMT

Another simple check is

$ show device d

will display disk drives, mount status and error count. Disks showing mount verify or offline won't be available.

Andy

Re: Checking disk failure from the system

Robert Gezelter — Mon, 11 Sep 2006 04:16:14 GMT

Ronald,

Before we go any further: Which disk controller is the drive connected to?

If it is in some form of array, the problem may be covered by the the array transparently.

This is good news/bad news. The array may not show errors (at least at the OpenVMS level) until things get far worse.

- Bob Gezelter, http://www.rlgsc.com

Re: Checking disk failure from the system

IFX_1 — Wed, 27 Sep 2006 04:57:52 GMT

No.