Re: RAID Controller Caching and XFS

[Seth Mos <knuffie@xxxxxxxxx>]

At 22:18 2-6-2002 +0200, Roy Sigurd Karlsbakk wrote:
> > I have enabled write-backing caching on a MegaRAID 1500 with battery 
> back-up.
> >
> > Two other cache options exist: Read-Ahead and I/O Caching.
> >
> > Any potential problems enabling these options with XFS 1.02?
>
> Shouldn't be a problem as long as he battery backup works. Given a power
> failure, the data should be written back to disk as fast as the system is
> being brought on-line.
>
> That is - if the battery backup works.
>
> I'd check for how long the battery will last. Contact the vendor and try
> to get the guarantied values. Also - how long the battery will last under
> normal and extraordinary conditions.
72 hours at most.

Probably less.

Cheers
--
Seth
It might just be your lucky day, if you only knew.