I have 3 servers at 100tb.com that uses Softlayer's datacenter.
Two of them are in RAID 1. At least two of them have been working continuously for over a year, and they have high amounts of data written at the disk, all day long. So, the disks work a lot.
I'd like to know, what will happen when some of the disks fail. I know that the server will continue working without one disk working.
What I want to know is how will I know that one of the disks failed?