Farkas Levente <lfarkas@xxxxxxxxxxx> wrote: > anyway is there any advantage of a raid6 over raid5+1spare disk? afaik > raid5 will be faster and use less cpu and both case 2 disk can failed. No, raid6 survives the simultaneous failure of two disks. Raid5 survives the simultaneous failure of one disk only. Even with a hot-spare, after this failure you have a time frame where the spare is synching and your array has no redundancy left. Thus, nearly every other disk failure (except a failure on the synching spare) within this time frame kills your array. regards Mario -- There are two major products that come from Berkeley: LSD and UNIX. We don't believe this to be a coincidence. -- Jeremy S. Anderson -- 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
