> Thank you all for your valuable experience and fast replies. I see your > point and will create one virtual disk for the system and one for the > storage pool. My RAID controller is battery backed up, so I'll leave > write caching on.
I think the point is to say: ZFS software raid is both faster and more reliable than your hardware raid. Surprising though it may be for a newcomer, I have statistics to back that up, and explanation of how it's possible. If you want to know. You will do best if you configure the raid controller to JBOD. Yes it's ok to enable WriteBack on all those disks, but just use the raid card for write buffering, not raid. The above suggestion might be great ideally. But how do you boot from some disk which isn't attached to the raid controller? Most servers don't have any other option ... So you might just make a 2-disk mirror, use that as a boot volume, and then JBOD all the other disks. That's somewhat a waste of disk space, but it might be your best solution. This is in fact, what I do. I have 2x 1TB disks dedicated to nothing but the OS. That's tremendous overkill. And all the other disks are a data pool. All of the disks are 1TB, because it greatly simplifies the usage of a hotspare... And I'm wasting nearly 1TB on the OS disks. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
