On Thu, Apr 5, 2012 at 5:38 PM, Trent W. Buck <trentbuck@gmail.com> wrote:

Brett Pemberton wrote:
> Now that a 1.5TB drive has failed, I'm replacing it with another 2TB drive,
> and wondering the best way to use the remainder 500GB

IMO, best practice is to leave it unused until *all* 1.5s are replaced
with 2s, at which point you just tell mdadm to grow to use the extra
500 on each disk. (If you have a partition table, you probably will
have to fiddle that first.)

That's one way of doing it, yes.

However I do need somewhere to store my OS, which currently isn't on this array (historical reasons).

And as I said, I'm not really interested in a long-term solution of replacing 1.5TB drives with 2TB drives.

There just isn't any big gains in it.

My previous run of replacing drives was replacing 500GB ones with 1.5TB ones.

So by that pattern, even going to 3TB drives is a step down.

/ Brett