On Sat, Dec 9, 2017 at 11:05 PM, Reginald Beardsley via illumos-discuss < [email protected]> wrote:
> Does hardware RAID 6 make sense Almost never. Hardware raid in general is undesirable; hardware raid-6 multiply so. > or is it better to have JBOD and RAIDZ2 instead? > Given a choice, let ZFS do the work. > If hardware RAID 6 makes sense, does one run RAIDZ on top? > Not ideally. You're losing space and performance twice over. > What HBAs are known to work? The HCL seems to only list cards which are > quite old and most are SAS rather than SATA. > Generally, a non-RAID LSI card is fine. The LSI 9300-8i, for instance, works well. You almost always want 1 disk per port on the HBA, without expanders. For SSDs, most are SATA anyway (while there are SAS SSDs, they're expensive), and SATA drives work fine plugged into a SAS port. My experience in the past was that there wasn't that much difference in price between a SATA HDD and the equivalent nearline-SAS variant. -- -Peter Tribble http://www.petertribble.co.uk/ - http://ptribble.blogspot.com/ ------------------------------------------ illumos-discuss Archives: https://illumos.topicbox.com/groups/discuss/discussions/T8d55e8784a6a979c-Mbe15f98d4d0a7679534baf67 Powered by Topicbox: https://topicbox.com
