Gregory Perry wrote: > Hello, > > I have a Dell 2950 with a Perc 5/i, two 300GB 15K SAS drives in a RAID0 > array. I am considering going to ZFS and I would like to get some feedback > about which situation would yield the highest performance: using the Perc > 5/i to provide a hardware RAID0 that is presented as a single volume to > OpenSolaris, or using the drives separately and creating the RAID0 with > OpenSolaris and ZFS? Or maybe just adding the hardware RAID0 to a ZFS pool? > Can anyone suggest some articles or FAQs on implementing ZFS RAID? > > Which situation would provide the highest read and write throughput? > > I'm not sure which will perform the best. But giving ZFS the job of doing your redundancy (which with raid0 sounds like you're not planning to do.) would be better than having the HW do it (if you have enough equipment having both do it is ok.)
That said, I had recent discussions on this list about an IBM HW RAID controller with battery backed cache, and the net result of the discussion seemed to be that with the cache, making each drive into a single drive RAID0 Lun on the HW raid (to gain the chance to use the write cache) and then letting ZFS combine the disks in what ever RAID maaner you want, would give performance benefits, especially if serving the filesystems over NFS is your goal. -Kyle > Thanks in advance > > > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
