RAID Part 2

3. RAID-2: Hamming Code ECC

This type uses striping across disks with some disks storing error checking and correcting information. It has no advantage over RAID-3.

Read more »

RAID Part 1

RAID (redundant array of independent disks; originally redundant array of inexpensive disks) is a way of storing the same data in different places (thus, redundantly) on multiple hard disks. By placing data on multiple disks, input/output operations can overlap in a balanced way, improving performance. Since multiple disks increases the mean time between failures, storing data redundantly also increases fault tolerance.

Advantages of RAID

There are three reasons you might want a RAID system of drives.

1. You need tons of storage space and you need it to be fast. (RAID 0)
2. You want to instantaneously and automatically backup your data. (RAID 1)
3. You want both. (RAID 5) 

Let’s discuss little bit about types of RAID:

Read more »