Summary: How to retain the controller no. of A5200?

From: Raymond Pang <>
Date: Wed Aug 08 2001 - 02:28:56 EDT
Hi Managers,

Thanks for all who replied. 

The controller number is kept in /etc/path_to_inst and will not change until 
the next "boot -r". Even if the controller number changed, VxVM is able 
to handle it. Darren Dunham gave me more details.

> 2) Veritas Volume manager *doesn't* care about the controller numbers.
>    You can swap the disks around, and as long as they are all polled, it
>    will come up properly.
>    Veritas puts a serial number on each disk in the private region.
>    When the machine boots, it polls the private region of every disk
>    that it can detect on the system.  It then figures out which disk it
>    is and uses it.  Controller number/target number changes between
>    boots will not affect Volume Manager.

Now, I feel safe to remove c2.


On Tue, Aug 07, 2001 at 04:45:11PM +0800, Raymond Pang wrote:
> Hi Manager,
> Our E4500 is configured as follows:
> system scsi 		c0
> scsi controller 1	c1
> scsi controller 2	c2
> FC-AL A5200		c3
> If c2 got removed, will the controller number of A5200 change to c2? How
> can I keep the volume manager of A5200 running? It's been configured to use
> disks c3txdxsx.
> Thanks in advance.
> Regards,
> Raymond
> _______________________________________________
> sunmanagers mailing list
Received on Wed Aug 8 07:28:56 2001

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