>>>>> "Mikael" == Mikael Abrahamsson <swmike@xxxxxxxxx> writes: Mikael> On Fri, 3 May 2013, John Stoffel wrote: >> We've got all these compute cycles kicking around that could be used to >> make things even more reliable, we should be using them in some smart >> way. Mikael> I would like to see mdadm tell the user that RAID5 is not a recommended Mikael> raid level for component drives over 200 TB in size and recommend people Mikael> to use RAID6, and ask for confirmation from the operator to go ahead and Mikael> create RAID5 anyway if operator really wants that. 200T? Isn't that a little big? *grin* Actually I think the warning should be based on both number of devices in the array and the size of members and the speed of the individual devices. Makeing a RADI5 with 10 RAM disks that are 10Gb each in size and can write at 500MB/s might not that bad a thing to do. I'm being a little silly here, but I think the idea is right. We need to account for all three factors of a RAID5 array: number of devices, size, and speed of each devices. John -- 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
