5.4RAID 0 / RAID 1 / RAID 0+1 / JBOD

configurations

The motherboard includes VIA® VT6410 high performance IDE RAID controller. It supports RAID 0, RAID 1, RAID 0+1 and JBOD with two independent IDE channels. This controller also complies with Scatter/ Gather host DMA mechanism of Programming Interface for Bus Master IDE Controller Revision 1.0 and builts 64 levels of pre-fetch and write buffer inside to improve the transfer rate. The Dual channel master mode hard disk controller supports up to four Enhanced IDE devices.

RAID 0 (called data striping) optimizes two identical hard disk drives to read and write data in parallel, interleaved stacks. Two hard disks perform the same work as a single drive but at a sustained data transfer rate, double that of a single disk alone, thus improving data access and storage.

RAID 1 (called data mirroring) copies and maintains an identical image of data from one drive to a second drive. If one drive fails, the disk array management software directs all applications to the surviving drive as it contains a complete copy of the data in the other drive. This RAID configuration provides data protection and increases fault tolerance to the entire system.

RAID 0+1 is data striping and data mirroring combined without parity (redundancy data) having to be calculated and written. The advantage of RAID 0 + 1 is fast data access (like RAID 0), but with the ability to loose one drive and have a complete duplicate surviving drive or set of drives (like RAID 1).

JBOD (for “just a bunch of disks” or sometimes “just a bunch of drives”) is officially termed as “spanning”. This is used to refer to a computer’s hard disks that haven’t been configured according the RAID system to increase fault tolerance and improved data access performance. This RAID system stores the same data redundantly on multiple drives by combining the drives into one larger logical drive.

For more information about the VIA® VT6410 RAID controller, refer to the VIA® VT6410, IDE RAID Controller user manual found in “\Manual\IAA RAID Manual.doc” of the support CD.

ASUS P4P800 Deluxe motherboard user guide

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