Re: Most energy efficient (home) setup

[George Herbert <george.herbert () gmail com>]

With RAID 4, the parity disk IOPS on write will rate-limit the whole LUN...

No big deal on a 4-drive LUN; terror on a 15-drive LUN...


George William Herbert
Sent from my iPhone

On Apr 14, 2012, at 8:04, Chris Adams <cmadams () hiwaay net> wrote:

> Once upon a time, Jeroen van Aart <jeroen () mompl net> said:
> > There may be a performance penalty using raid4, because it uses one 
> > parity disk. Although that system looks like it can be useful for some 
> > purposes it looks less ideal for home use. Also I don't see how it would 
> > allow you to install your own OS.
>
> For read-mostly storage, there's no penalty as long as there's no disk
> failure.  The parity drive wouldn't even spin up for reads.
> -- 
> Chris Adams <cmadams () hiwaay net>
> Systems and Network Administrator - HiWAAY Internet Services
> I don't speak for anybody but myself - that's enough trouble.