A good guide to why hard drives go wrong and the signs of impending failure
As some of you who use spinrite very frequently may have noticed, spinrite will usually crash when scanning larger drives (in my experiences it's been on drives over 640GB). Once spinrite gets to a certain point in ...
This page has an excellent description of how a hardrive partition is set out, how it can fail and how it should be fixed. This tutorial has some excellent diagrams.
This is a really easy to follow article on how RAIDs are arranged
This is an article on how to recover data from a LaCie 1TB External NAS Drive. This assumes the actual hard disks are intact and it is either the powerpack or controller board that has failed.