> On a slightly different but related topic, anyone have advice on how > to connect up my drives? I've got room for 20 pool drives in the case. > I'll have two AOC-USAS-L8i cards along with cables to connect 16 SATA2 > drives. The motherboard has 6 SATA2 connectors plus 2 SATA3 > connectors. I was planning to use the SATA3 connectors for the boot > drives (hopefully mirrored ZFS). Initially I'll have three 2TB drives > with the intention of using raidz1 on them. Phase 2 will be three more > 2TB drives. Phase 3 will be three 1.5TB drives. (I already have most > of the drives for phase 2 and 3.) I'll probably fill the rest with a > JBOD pool of assorted drives I have lying around.
I'd try to grab more drives of the same size to be able to do RAIDz2. It's quite common that a drive fails and there are 'silent' errors (non-detectable on the drive's CRC, but detectable by ZFS) during resilver. This will give you data corruption. If you have RAIDz2, ZFS will figure that out > I'm specifically wondering if I'll see better performance by spreading > the raidz1 array devices across the controllers or if I should keep an > array to a single controller as much as possible. This has been debated a lot. If you put a VDEV (or pool) on a single controller, if that controller dies, your pool will be unavailable until the controller is replaced. If you spread the disks over more controllers, the chances are better to allow access to the data until you replace the controller. Again, raidz2 will help out there as well Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
