almanach storage

RAID

RAID (Redundant Array of Independent Devices)
RAID level
0 (striping)
1 (mirroring)
10 (RAID 0+1, striped disks w/ mirroring of all disks for fault tolerance)
1E (mirroring on an impaired number of disks)
2 (striping w/ parity - ECC hamming code, parity stored on separate disks)
3 (striping w/ parity - ECC XOR code, parity stored on separate disks)
4 (RAID3 w/ sector parity instead of file parity)
5 (striping w/ parity - ECC, parity striped over all disks, N+1 disks, +1 is named hot spare)
53 (RAID 0+3, striped disks w/ RAID 3 implementation on every single disk)
50
5E (RAID 5 w/ a striped hot spare)
6 (striping w/ double parity - ECC, parity striped over all disks, N+2 disks)

mirroring (two harddrives on one controller with identical content)
duplexing (two harddrives on two controller with identical content)
volume set (2 or more harddrive partitions in one logical drive)
disk striping
stripe set (2-32 identical harddrives in one logical drive)
stripe set with parity

parity
fault tolerance
redundancy
hot spare