Eirik Øverby wrote: > I have noticed that my 3ware controllers, after updating firmware > recently, have removed the JBOD option entirely, classifying it as > something you wouldn't want to do with that kind of hardware anyway. I > believed then, and even more so now, they are correct.
It kinda depends. If there were a good 8 or 16+ port SATA card out there that *simply* did SATA with no bells and whistles, then there would be no point buying a Raid adaptor when you want to use things like ZFS. But there are no such cards available. > Use the RAID-0 disk trick to be able to utilize the controller cache. > And regarding write-back vs write-through; I believe write-through is > equvivalent to disabling controller write cache, however it WILL cache > the writes in order to respond to future reads of the data being > written. I would guess, but I don't know, that this also goes for > disk-level caches too, though, so it probably doesn't matter. It is interesting to me that the default setting on the Areca card was to have the disk caches turned on. I think that is strange because by default you have a situation that can lead to data loss even if you have a battery backup unit. -D _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hardware To unsubscribe, send any mail to "[EMAIL PROTECTED]"
