I thought a wee article on what a server is and why they are expensive compared to your average PC might be interesting. When you hear someone say they have built a server for the house what they usually mean to say is they’ve built a PC and have it running various applications which serves ‘stuff’. A real server is a different beast all together.
So what makes a server a server? It boils down to the hardware feature set. Sure, you can get low-end servers which are nothing more than a PC in a fancy rack mount chassis, but lets take a look at higher end goodness.
There are many tutorials on rebuilding Linux Software RAID but most are unnecessarily overly complicated. It’s fairly straight forward – here’s how.
Unlike hardware RAID, software RAID is all handled by the operating system itself. This means the process of replication, rebuilding and control is performed by the filesystem with various kernel and userspace software.