Rapid Storage Technology and RAID storage

[Devabrata]

I want to know about the Rapid Storage Technology and RAID storage. Instead of searching on Web, I thought that it would be better to mention here in this post. Since, you guys explain in detail, I understand the things very easily. So please provide some needful information about the topic as soon as possible. Any other information related to the topic would be grateful.

[Myron]

Rapid Storage Technology - The option ROM supports the Serial ATA hard drives and RAID volumes that are connected to a central controller RAID Intel before the operating system is loaded. The option ROM must be built into the system BIOS on all motherboards equipped with an Intel and Intel RAID controller hub supported. To install or update the option ROM, you must load a system BIOS that includes it.

RAID storage - This technology is an acronym for Redundant Array of Independent Disks or Redundant Array of Independent Disks all (or as redundant array of Inexpensive Disks for cheap disk). Its principle, as the acronym suggests, is to establish units or storage arrays with multiple hard drives, for reasons of availability, capacity and write speed.

[Aiden]

If you have an older version (eg, 8.x) of the option ROM on your system, you can upgrade to a newer version (eg 9.5) of Storage Technology Intel Rapid. You can not and do not need to move to a system BIOS that includes version 9.5 of the option ROM because it does not support the components of your system. The following are an Option ROM version along with the Supported Hardware.

• V7.5 - Intel ICH9R controller hub (SATA RAID)
• 7.0 - Controller hub Intel 82801HEM (ICH8M-E)
• 6.x - Intel ICH8R controller hub (SATA RAID)
• Version 5.7 - SATA RAID controller hub Intel 82801GHM (ICH7MDH)
• Version 5.x (x <7) - SATA RAID controller hub Intel 82801GR (ICH7R)
  SATA RAID controller hub Intel 82801GH (ICH7DH)

[Pageous]

Architecture SLED (Single Large Expensive Disk), unlike RAID, based on a single disk storage, high capacity, but expensive. A failure can lead to data loss. For reasons of availability, data sometimes can not be stored on media not redundant. In addition to good performance, a combination of standard hard disks (3.5 and 5.25 inches) has the advantage of being very significantly cheaper than the use of disks for large systems (6.5 "and 9.5").

[semento]

The types of RAID architecture to be numbered 0-5. Were then introduced additional levels (6 and 10), as well as combination or compounds such as RAID level 1 +0, RAID 5 +0, etc.. All levels are not operated in business, RAID-2 is also now obsolete. The most commonly used are probably levels 0, 1, 1 +0, 4,5 and JBOD (Just a bundle of disks). RAID-0 is called striping disks. This level offers no redundancy since data are distributed across all disks. The failure of a disk means therefore their loss. Redundancy is however introduced in RAID-1 which is called mirroring or shadowing. The characteristic of this level is to record the same data on at least two disks. The writing is simultaneous. Reading about it is from the disk as available.

[Santanio]

JBOD or RAID-linear capability enables use of disk drives 100%, but does, however, no redundancy. RAID-0, which is not a redundant system, provides the same value for use and a very important gain in the rate of data transfer (about 200% for 2 discs). RAID-1 and 1 +0 compensate for these weaknesses by allowing redundancy perfect. They also offer a very good time reading and writing. However, RAID-1 requires two identical disks and use only 50% of storage space. RAID 1 +0 requires four drives him to a utilization rate of only 50%. RAID-4, used primarily for databases, allows redundancy parity disk with a storage capacity of 66% (for 3 discs).