configuration choices with Dell CERC (adaptec 2610SA)
user at dhp.com
Sat Nov 26 20:34:25 GMT 2005
On Sat, 26 Nov 2005, Herve Boulouis wrote:
> Le 26/11/2005 15:22, user a =E9crit:
> > One other clarification - I have the option to turn write caching on an=
> > off when I create the array (I am turning it ON now for the array based=
> > your opinion) ... but I also have an option in the adaptec bios to turn
> > write-caching on for each specific disk drive. I have also turned this
> > on.
> > caching for the array _depend on_ having write caching for each drive
> > turned on ?)
> Never enable the disk write caching. The raid controller write caching
> is safe if you have a battery on the card or a UPS whereas the disk write
> cache can never be safe.
Can you elaborate ? I am confused as to why the UPS does not protect the
disk drives just as much as it protects the raid card ?
thanks a lot for your help.
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