Dell PowerEdge 2600
The information here is about the RAID (PERC/CERC) configuration more than the server itself.
RAID 0 - using striping which creates stripes across multiple drives. Striping means the array can access data on multiple drives at the same time. This makes RAID 0 the fastest access solution, but it has no fault tolerance.
RAID 1 - uses disk mirroring to ensure data reliability at the costs of wasted disk space (2 copies of everything incase of drive failure).