partitioning server with 2 hard drives

Steve O'Hara-Smith steve at
Wed Sep 16 05:54:44 UTC 2020

On Tue, 15 Sep 2020 16:10:05 -0700
Michael Sierchio <kudzu at> wrote:

> On Tue, Sep 15, 2020 at 3:19 PM Steve O'Hara-Smith <steve at>
> wrote:
> >
> >
> >         I would go for a ZFS mirror using the rest of the drives, set up
> > a weekly scrub and never worry about a drive failure again.
> >
> When, not if, a drive fails, will you find one with precisely the same
> geometry / capacity to replace the failed drive and remirror?  Can you do

	You don't need to, you just need one big enough, and 1TB drives are
very easy to find.

> so before the other drive fails (which might be statistically likely)?

	Unless you do something daft like RMA the drive and wait then yes

> There are good online MMTDL, MTTF, MTBF numbers for various raid levels
> for ZFS. None would lead me to be so glib.

	Well OK there are no guarantees but a mirror is orders of magnitude
better than a single drive.

Steve O'Hara-Smith <steve at>

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