On Thu, 7 Nov 2013, Federico Giannici wrote:
> For a decision I have to do, I have to know if the RAID1 implementation
> in softraid evenly distributes the "read" load through all the disks.
Yes, reads are interleaved across all online chunks.
> So, for example: with a two identical disks RAID1 implementation, can we
> roughly assume that write speed is almost the same speed of a single
> disk while the read speed is almost the double?
As you note below, it is not this simple... if each disk is on a separate
controller and there are no shared bottlenecks, this would be theoretically
close. Also, since you can have more than two chunks in a softraid RAID1
volume, you could theoretically increase the read speed by further
distributing it across disks/controllers.
> I know that reality is not so simple, but it's only to have an "ideal"
> situation to understand the working of the system.
Right. Obviously benchmarking would be good starting point :)
--
"Action without study is fatal. Study without action is futile."
-- Mary Ritter Beard
