Advantages of RAID Systems for Your Servers
Redundant Array of Independent Disks (RAID) is next-level storage technology. It takes the single drive in your server and replaces it with a minimum of 2-4
RAID 0 – Performance but No Recovery Options
RAID 0 takes your data and writes it across multiple drives, which is called striping. Ideally, each drive is on its own controller. The advantage is that you get high performance
RAID 0 is great if you have backups of your data and
RAID 1 – Complete Backups but Poor Performance
RAID 1 incorporates mirroring. Mirroring means for
The disadvantage is that data must be written twice,
When one drive fails, your mirrored drive can take over. Just remember to replace the failed drive quickly, because if the second one fails, your data is lost.
RAID 5 – Striping with Data Recovery
RAID 5 combines the striping from RAID 0 with parity. Parity provides the drives with the ability to rebuild your data should one drive fail. With RAID 0 and 1, you run into an emergency situation when a drive crashes. Even
With RAID 5, data is spread across multiple drives as
RAID 6 – Striping and Two Disks for Parity
Just like RAID 5, parity is written to disks to
RAID 10 – A Combination of RAIN 1 and RAID 0
You can create a hybrid array that uses both RAID 1 and RAID 0 solutions. It gives you the benefits of speed and redundancy. Just remember that half of your storage must be used for mirroring, so you still get the disadvantage of needing double the storage capacity. Because of the wasted disk space, most administrators choose to go with RAID 5 or 6 instead.
This is a list of common RAID systems. You can find RAID 2, 3 and 7 but they aren’t as common or popular administrators. If you plan to use RAID, you should place drives on different controllers for ultimate security. Remember that even with multiple drives, if your controller crashes and all drives are on it, your storage is lost.