On Thu, Jul 8, 2010 at 6:10 AM, Philippe Schwarz <p...@schwarz-fr.net> wrote: > With dual-Xeon, 4GB of Ram (will be 8GB in a couple of weeks), two PCI-X > 3Ware cards 7 Sata disks (750G & 1T) over FreeBSD 8.0 (But i think it's > OS independant), i made some tests. > > The disks are exported as JBOD, but i tried enabling/disabling write-cache .
Don't use JBOD, as that disabled a lot of the advanced features of the 3Ware controllers. Instead, create "Single Disk" arrays for each disk. That way, you get all the management features of the card, all the advanced features of the card (StorSave policies, command queuing, separate read/write cache policies, SMART monitoring, access to the onboard cache, etc). With only the RAID hardware disabled on the controllers. You should get better performance using Single Disk over JBOD (which basically turns your expensive RAID controller into a "dumb" SATA controller). -- Freddie Cash fjwc...@gmail.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
