Re: Raid 10 chunksize

On 4/1/09 10:01 AM, "Matthew Wakeling" <matthew(at)flymine(dot)org> wrote:

> On Wed, 1 Apr 2009, Stef Telford wrote:
>> Good UPS, a warm PITR standby, offsite backups and regular checks is
>> "good enough" for me, and really, that's what it all comes down to.
>> Mitigating risk and factors into an 'acceptable' amount for each person.
>> However, if you see over a 2x improvement from turning write-cache 'on'
>> and have everything else in place, well, that seems like a 'no-brainer'
>> to me, at least ;)
>
> In that case, buying a battery-backed-up cache in the RAID controller
> would be even more of a no-brainer.
>
> Matthew
>

Why? Honestly, SATA write cache is safer than a battery backed raid card.
The raid card is one more point of failure, and SATA write caches with a
modern file system is safe.

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