On 04/15/2013 02:44 PM, Dexter Filmore wrote: > Am Wednesday 10 April 2013 23:54:28 schrieb Stan Hoeppner: >> On 4/10/2013 12:32 PM, Dexter Filmore wrote: >> >> It's not necessary to ask on linux-raid, and as you have not yet done >> so, I'll clarify this now: >> >> Both the md RAID1 and RAID10 personalities will read sectors in parallel >> from both disks in a mirror pair in most circumstances. This has been >> the case for many years. This is a read optimization only. Writes >> occur in parallel as well, obviously, but as it's the same data the net >> data throughput isn't doubled, only the raw device throughput. This >> should be obvious to anyone. I'm merely being complete in my description. >> >> -- >> Stan > > Interesting. Only 1 and 10 or 5/6 as well? > >
My first thought is that raids 5 and 6 use parity data, not duplicate copies, so no. After more thought, perhaps there could be a small read boost in certain situations where data is spread across several drives. That said, it would be nowhere near the performance of raids 0/1/10. Anyone with more direct experience? - PaulNM -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/516c4e6e.4080...@paulscrap.com
