Re: raid1 and raid 10 always writes all data to all disks?

On Sun, Feb 03, 2008 at 10:56:01AM -0500, Bill Davidsen wrote:

Keld Jørn Simonsen wrote:

quoted

I found a sentence in the HOWTO:

"raid1 and raid 10 always writes all data to all disks"

I think this is wrong for raid10.

eg

a raid10,f2 of 4 disks only writes to two of the disks -
not all 4 disks. Is that true?
 

I suspect that really should have read "all mirror copies," in the 
raid10 case.

OK, I changed the text to:

raid1 always writes all data to all disks.

raid10 always writes all data to the number of copies that the raid holds.
For example on a raid10,f2 or raid10,o2 of 6 disks, the data will only
be written 2 times.

Best regards
Keld
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