The RAID technology
RAID stands for "Redundant Array of Independent Disks" so an array of multiple hard drives or SSDs. Especially the division of the data into blocks, which are then stored distributed on the different storage media is.
- The three main RAID levels are RAID 0, RAID 1, and RAID 5. We will explain these in the next sections.
Setting the RAID in the BIOS
The data split in RAID 0
In RAID 0, no data will be stored twice. The data blocks are evenly distributed across all participating drives.
- As a result, you can use the full storage space of all plates, while the speed of access by a plurality of Read and write options increases significantly. For the user of the RAID is working-composite as a single large hard drive.
- A reduced failure probability, which accounts for RAID, otherwise, actually, there's not a RAID 0, however. The data will not be stored redundantly.
The data Mirroring with RAID 1
For RAID 1, you need at least 2 hard drives. All data is stored on all disks, the capacity of the entire Association is based, therefore, on the capacity of the smallest of the involved hard disk.
- RAID 1 is mainly characterized by a high level of security. The probability of failure of the entire system is extremely low, since all data is duplicated. An increase in the capacity of RAID 1 brings, the reading speed is increased.
RAID 5 with 3 hard drives
More about the difference between Software or Hardware RAID read in a further practical tip.
