Home | Contents | Help   Raidhelp     Defining RAID Level 1/0 - (Disk Mirroring/Striping) Note: Sometimes written as Level 10 but should be referred to as level one/zero not level ten This RAID level is a hybrid built out of a combination of Level 1 (Mirroring) with Level 0 (Striping). This offers the high protection value of mirroring and the high performance of disk spanning by simple striping. A stripe set of drives is built giving high performance, with the entire array mirrored onto an identical set of drives. This offers fault tolerance for striped arrays, but has the disadvantage of requiring double the hard drive capacity and is therefore fairly expensive. Many hardware RAID controllers are capable of automatically creating such a set up. RAID Level 1/0 probably offers the ideal RAID system. It is fully replicated, with a data redundancy of 100%. This means in reality the same mirrored drive - the drives holding the same stripes of data - in both stripe sets will need to fail simultaneously to actually suffer data loss through hardware failure. Striping also offers the highest performance of any RAID Level for due to its simplicity of operation. It merely uses every drive available simultaneously for maximum bandwidth. It is however, hideously expensive to implement requiring the purchase every single component twice over to set up. Next: Level 2 Related topics: Defining RAID Levels RAID Level 1 - Mirroring RAID Level 0 - Striping   Raidhelp   RAIDhelp© Copyright 1999-2004 Antony Kershaw