RAID Level 0

CAUTION: RAID level 0 provides no redundancy. Therefore, a failure of one drive results in the loss of all data. Perform regular backups to protect your data.

RAID level 0 uses data striping to provide a high data access rate. Data striping writes consecutive segments, or stripes, of data sequentially across the physical drive(s) to create a large virtual drive. This allows one of the drives to read data while the other drive is searching for and reading the next block.

CHAPTER 4: USING YOUR DESKTOP

RAID Level 1

RAID level 1 uses data mirroring to enhance data integrity. When data is written to the primary drive, the data is also duplicated, or mirrored, on the secondary drive in the configuration. RAID 1 sacrifices high data-access rates for data redundancy.

RAID 0

Disk 0

Disk 1

RAID 0 uses the full storage capacities of both drives. For example, two 2 GB hard drives combine to provide 4 GB of hard drive space on which to store data.

NOTE: In a RAID 0 configuration, the size of the configuration is equal to the size of the smallest drive multiplied by the number of drives in the configuration.

RAID 1

Disk 0

Disk 1

If a drive failure occurs, read and write operations are directed to the remaining drive. A replacement drive can then be rebuilt using the data from the remaining drive.

NOTE: In a RAID 1 configuration, the size of the configuration is equal to the size of the smallest drive in the configuration.

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Dell Area-51 ALX manual RAID Level