[CentOS] An mdadm question

Thu Jul 2 14:47:40 UTC 2015
John Hodrien <J.H.Hodrien at leeds.ac.uk>

On Thu, 2 Jul 2015, m.roth at 5-cent.us wrote:

> CentOS 7.
> I have a server with four drives. 1 is /, and the other three are in
> RAID5. I need to pull a drive, so I can test whether the server can read >
> 2TB drives. I've been googling, but don't want to screw the server up....
> I think I'd like to
>  1. stop the RAID
>  2. pull a drive
>  3. put in a large drive, and run parted, and mkfs
>  4. pull the large drive
>  5. replace the RAID drive
>  6. fire up the RAID.
> So, can I do it in that order? Do I need to fail something?

If you really just want to test if it can use 2Tb disks, unplug all disks,
plug in 4Tb disk, boot off liveCD, tinker.

When done, reverse.