Comment by dspillett

This is why I try to mismatch manufacturers in RAID arrays. I'm told there is a small performance hit (things run towards the speed of the slowest, separately in terms of latency and throughput) but I doubt the difference is high and I like the reduction in potential failure-during-rebuild rates. Of course I have off-machine and off-site backups as well as RAID, but having to use them to restore a large array would be a greater inconvenience than just being able to restore the array (followed by checksum verifies over the whole lot for paranoia's sake).