Raid Terminology - HP Proliant ML310 Setup And Installation Manual

RAID Configuration and Management

RAID Terminology

IMPORTANT: Only RAID levels 0, 1, and 1+0 are supported by the Integrated ATA RAID
Configuration Utility.
RAID 0 (Stripe)
RAID 0 is a RAID level that involves breaking up data into smaller blocks and then
writing a block to each drive in the array (striping). RAID 0 does not provide any
data redundancy, but does offer the best performance of any RAID level.
RAID 1 (Mirror)
RAID 1 is a RAID level that involves duplicating all data from one drive to a second
drive (mirroring). RAID 1 provides complete data redundancy, but at the cost of
doubling the required data storage capacity. You must have a minimum of two hard
drives to support RAID 1.
RAID 1+0
RAID 1+0 (also known as RAID 10) is a RAID level that provides both striping and
mirroring capabilities. RAID 1+0 mirrors data from one drive to another and then
stripes the data across a second set of drives. You must have four hard drives to
support RAID 1+0 on the server.
RAID 5
RAID 5 is not supported by the ProLiant ML310 server or the Integrated ATA RAID
Configuration Utility. It is a RAID level that stripes data and parity information
across drives and requires a minimum of three hard drives.
6-2 HP ProLiant ML310 Server Setup and Installation Guide