On 7/12/2010 5:52 PM, Stan Hoeppner wrote: > Aaron Toponce put forth on 7/12/2010 5:16 PM: >> On 7/12/2010 4:13 PM, Stan Hoeppner wrote: >>> Is that a typo, or are you turning those 3 disk mdadm sets into RAID10 as >>> shown above, instead of the 3-way mirror sets you stated previously? RAID 10 >>> requires a minimum of 4 disks, you have 3. Something isn't right here... >> >> Incorrect. The Linux RAID implementation can do level 10 across 3 disks. >> In fact, it can even do it across 2 disks. > > Only throw the bold "incorrect" or "correct" statements around when you really > know the subject material. You don't. Linux md RAID 10 is not standard RAID > 10 when used on 2 and 3 drives. When used on 3 drives it's actually RAID 1E, > and on two drives it's the same as RAID1. Another Wikipedia article linked > within the one you quoted demonstrates this. Note the page title > "Non-standard_RAID_levels". The argument is not whether Linux software RAID 10 is standard or not, but the requirement of the number of disks that Linux software RAID supports. In this case, it supports 2+ disks, regardless what its "effectiveness" is. Try again. -- . O . O . O . . O O . . . O . . . O . O O O . O . O O . . O O O O . O . . O O O O . O O O
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