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Redundant Array of Independant disks(RAID) is a storage technology that combines multiple disk drive components into a single logical unit. There are different RAID level, RAID 0, RAID 1, RAID 5, RAID 1+0 that you can set up depending on the level of redudancy, efficiency and performance that you require.

RAID 0 – Stripping

  • Good performance (fast write speed)
  • Space efficiency: 1
  • Fault tolerance: 0

RAID 1 – Mirroring

  • Normal performance
  • Space efficiency: 1/n
  • Fault tolerance: n-1 drives

RAID 5 – Striping + Parity

  • Good performance
  • Space efficiency: 1 – 1/n
  • Fault tolerance: 1 drives

RAID 1+0 – Striping + Mirroring

  • Good performance
  • Space efficiency: 1/n
  • Fault tolerance: Handles multiple drive failures as long as not all of the drives on one mirror fails.

RAID can be set up at the hardware level or at the software level. Implementing RAID on the software level tends to be slower as the CPU will have do the computing instead of the storage controller. However, software RAID could employ a more sophisticated algorithms such as drive scheduling and command queueing which could help to enhance the efficiency. Even so, RAID is usually configured on a storage controller.

To set up RAID on an Intel (R) Matrix Storage Manager. Press Ctrl+I(Different PC systems may have a different key combo) during set up to enter the configuration menu.

Once inside the manager, we can see the hard disks wtih their size and status. As well as five options on the top of the interface. The options are pretty straight forward and since we’re going to create a RAID volume, we’re going to select option 1 and press enter.

Enter the name that you would like for your RAID volume, then select the RAID level. For this case, I’m going with RAID1. As I’ve only got 2 hard disks, I am not able to select the disks that I’m going to use for the RAID as RAID1 requires a minimum of 2 disks. For RAID0/5/1+0, we’ll have to select the Strip size. Strip size is usually selected based on the system and programs that you’re going to install on it. If you have no clue on what to do with it, just leave it as the default value.

Select Create Volume and the RAID will be created.

If you want to delete a RAID Volume, simply go to option 2 in the main menu.

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