On Wednesday July 13, jdc@xxxxxx wrote: > Here's a question for people running software raid-5: do you get > significantly better read speed from a raid-5 device than from it's > component partitions/hard drives, using the simple dd test I did? SCSI-160 bus, using just 4 of the 15000rpm drives: each drive by itself delivers about 67M/s Three drives in parallel deliver 40M/s each, total of 120M/s 4 give 30M/s each or a total of 120M/s raid5 over 4 drives delivers 132M/s (We've just ordered a SCSI-320 card to make better use of the drives). So with top-quality (and price) hardware, it seems to do the right thing. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
