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Matrix RAID is a computer storage technology marketed by Intel. It is a firmware RAID system, rather than hardware RAID or software RAID. Matrix RAID first appeared in the ICH6R "southbridge" chip. Intel uses an 'R' at the end of the southbridge's name – ICH9R instead of ICH9 – to indicate when a southbridge contains their Matrix RAID technology and no other upgrades. Complicating the matter is that instead of "R," a "DO," "DH," etc. has indicated a southbridge that combined RAID with non-RAID-related upgrades to the southbridge. Newer chipsets which don't use a separate southbridge might also use Intel RST without explicit extensions like "R" within the chipset name, an example for this is the Intel PCH C200 chipset series. Like all RAID, Intel Matrix RAID employs two or more physical hard disks which the operating system will treat as a single disk, in order to increase redundancy which avoids data loss (as all RAID levels except RAID 0 do), and/or to increase the speed at which data is written to and/or read from a disk. Intel Matrix RAID is ''not'' a new RAID level. One of the features that Intel Matrix RAID has, which many other RAID implementations lack, is that different areas (e.g. partitions or logical volumes) on the same disk can be assigned to different RAID devices. The ICH10R supports standard RAID levels RAID 0, RAID 1, RAID 10, and RAID 5.〔(【引用サイトリンク】work=Intel website )〕 Intel recommends to put any critical applications and data on a RAID 1, 5, or 10 volume. The thinking being that protection from losing the user's personal data and the OS and program configuration settings is more important than having the pure performance (speed) increase of RAID 0. On the other hand, the RAID 0 volume in Matrix RAID is recommended mostly for working with large files, such as videos during editing, and for non-critical files where fast storage will increase performance (swap files, for example, or read-only files that are backed-up on a separate PC). Intel Matrix RAID, along with Intel Rapid RAID and Intel Smart Response Technology, are features of Intel Rapid Storage Technology. ==Operating system support== Linux supports Matrix RAID through device mapper (DM-RAID) for RAID 0, 1 and 10, and Linux MD RAID for RAID 0, 1, 10, and 5. Set up of the RAID volumes must be done by using the ROM option in the Matrix Storage Manager, then further configuration can be done in DM-RAID or MD-RAID.〔(【引用サイトリンク】work= Intel website )〕 FreeBSD and MidnightBSD support Intel Matrix RAID using the ataraid driver, managed through the atacontrol command. However, with older versions of FreeBSD there are critical reliability issues which include array device renaming when a disk in an array is replaced, an array being considered healthy if the machine reboot/crashes during an array rebuild, and kernel panics when a disk is lost or is removed from the bus. Some of these problems, when experienced in combination, could result in the loss of an entire array (even in the case of RAID 1). Microsoft Windows has full support for Intel Matrix RAID, including creation of RAID volumes. VMware ESXi 4 does not support any RAID function nor Intel Matrix RAID based on Intel ICHxR controllers. PGPDisk does not support Intel Matrix RAID based on Intel ICHxR, and does not support standalone drives if the "RAID" mode is enabled on the motherboard. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Intel Matrix RAID」の詳細全文を読む スポンサード リンク
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