Re: io performance...

[Alexander Samad]

On Fri, Jan 20, 2006 at 12:09:14PM +0800, Max Waterman wrote:
> Alan Cox wrote:
> >On Iau, 2006-01-19 at 21:14 +0800, Max Waterman wrote:
> >>So, if I have my raid controller set to use write-back, it *is* caching 
> >>the writes, and so this *is* a bad thing, right?
> >
> >Depends on your raid controller. If it is battery backed it may well all
> >be fine.
> 
> Eh? Why?
> 
> I'm not sure what difference it makes if the controller is battery 
> backed or not; if the drives are gone, then the card has nothing to 
> write to...will it make the writes when the power comes back on?
some do
> 
> Max.
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