In article <dqjt67$c8j$1@news-01.bur.connect.com.au>, rancid moth <rancidmoth@yahoo.com> wrote:
>
> thanks for the advice. however do you know exactly what the
>
> QUORUM: 2
>
> line in the lsvg rootvg display refers to?

It means that two drives are required to achieve quorum.

If one drive fails while this is set to 2, the system will intentionally
panic, because quorum requires 1/2 of all drives + 1.

Sample quorum calculation:

2 drive setup: 1 drive fail, quorum requirement is 1/2 of 2.. that's 1
drive. Plus one drive. So, 2 drives is required to maintain quorum.

If only 1 is working, system automatically panics because 1 working
drive is less than minimum quorum required of 2 working drives.

To correct that, you need to do the two steps mentioned earlier.

The quorum mechanism is designed to prevent potential data corruption or
loss, but it does not make much sense in a two drive mirrored setup.

So the standard advice is to disable quorum if you have that setup --
which you do.

-Dan