On Tue, Nov 16, 2010 at 3:24 AM, Carlos E. R.
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On Monday, 2010-11-15 at 22:11 -0300, Cristian Rodríguez wrote:
El 15/11/10 21:47, Carlos E. R. escribió:
Yes, the maximum I get is 126, I suppose better hardware can get more speed.
/dev/sdb: Timing cached reads: 17492 MB in 2.00 seconds = 8754.09 MB/sec Timing buffered disk reads: 758 MB in 3.00 seconds = 252.44 MB/sec
;-)
Raid 0?
- -- Cheers, Carlos E. R.
Carlos, You made mention of Raid 8 earlier in this thread, which I've never heard of. I suspect you think a Raid 5 is any raid made of 5 disks. That's not how it works. You might find the Wikipedia article worth perusing. http://en.wikipedia.org/wiki/RAID#Standard_levels Raid 0, 1, 5, 6 are the most common. And you can combine them, so a Raid 1 + 0 is a mirrored set of striped disks (or is it a striped set of mirrored disks?). People get lazy, so they often call that a raid 10. Wiki to the rescue again: http://en.wikipedia.org/wiki/RAID#Nested_.28hybrid.29_RAID As to an earlier comment of yours that a Raid 1 + 0 made of 8 disks would be slower than a Raid 0 made of 4 disks, that can be true, but in theory the actual writing is done in parallel, so the slow down should be negligible. And on the read side, you have 2 sources for each piece of data, so in theory you can read from a raid 1 + 0 twice as fast as from a raid 0. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org