[mythtv-users] Recovering dead database + new RAID advice

[Zarthan South]

On Fri, Jun 29, 2012 at 11:26 AM, Gary Buhrmaster <gary.buhrmaster at gmail.com
> wrote:

> On Fri, Jun 29, 2012 at 3:23 PM, Dave Cunningham <ml at upsilon.org.uk>
> wrote:
> ,,,,
> > Thanks for that - this is something I had never even consider and after
> > googling a bit it seems you are absolute correct about RAID-5
>
> That is one of the reasons that raid-6 (aka raidz2) became popular,
> along with background scrubbing, and hot spare fast rebuild,
> especially in the enterprise space.  And, even two parity drives
> are not always enough as drives get bigger and bigger (and the
> reconstruct time goes up and up).
> _______________________________________________
>

Also note that using the minimum number of drives to build an array (3 in
RAID 5 or 4 in RAID 6) is by far the slowest. It is far better to use more
smaller drives to achieve a given volume size with the caveat that the more
drives you have increases the likely hood of loosing two drives.
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