I agree with that: the cost of a few extra mirror disks is negligible compared to the amount of time one loses rebuilding a machine (OS + applications + configu

I agree with that: the cost of a few extra mirror disks is negligible compared to the amount of time one loses rebuilding a machine (OS + applications + configuration) from scratch. Yet, all too often I come across people who don't want RAID1 because they can save $60 by not installing that second disk.