Messages in this thread | | | From | (Måns Rullgård) | Subject | Re: Software RAID5 with 2.6.0-test | Date | Fri, 17 Oct 2003 21:18:24 +0200 |
| |
Samuel Flory <sflory@rackable.com> writes:
>> What about the RAID controllers in the $400 category? Surely, they >> must be doing something better than the $50 fakeraid controllers. >> > > Yes, but follow this logic. > > 1)You are willing to devote 10% of 2Ghz xeon to software raid. > 2)A $500+ controller has a 100Mhz proccessor. > > Thus just from this you could guess that software raid has x2 as > many clock cycles availble to it. It's even worse when you realize > the 2Ghz xeon is a better proccessor in many more ways than just > clock cycles.
How about this logic:
1) If the processor on the RAID controller can handle the full bandwidth of the disks, it's fast enough. 2) If someone else does the 10% work, the CPU can do 10% more work.
-- Måns Rullgård mru@users.sf.net
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |