Michael Monnerie wrote:
> Don't mix up the controller write cache vs. disk write cache. The
> controller write cache should be on whenever you have a BBM installed,
> because this brings real performance, while the disk write cache should
> always be off in a production environment, because you will loose data
> on power fail, which nobody can recognize (the controller believes the
> sectors to be written already...)
I've been under the impression that "modern disks" (TM), at minimum the
server-type products, are supposed to re-use the remaining spin-energy
for generating the required power and thus writing the content of their
on-disk write cache to the disks.
Cheers,
Martin.
--
Unix _IS_ user friendly - it's just selective about who its friends are !
--------------------------------------------------------------------------
|