RAID refers to Redundant Array of Independent Disks, which is an advanced data storage technology. As there are many RAID levels, many home users are confused at which is suitable for their personal data. This post will give some suggestions.
With RAID technology, you will be able to connect two or more drives in a storage system. With several physical disks combined into a single large volume fast disk, not only will the system performance get improved drastically, but also you will get fault tolerance and data redundancy, etc., which can reduce the chance of data loss to some extent, similar to Outlook data loss due to PST corruption. Therefore, RAID technology indeed has many advantages.
In general, RAID is frequently used by businesses. But due to its benefits, a lot of home users also would like to apply it for their personal data storage. However, since there are too many RAID levels and even nested RAID levels, it is difficult to figure out which is appropriate for personal data. Hence, here we’ll recommend 3 kinds of RAID levels – RAID 0, RAID 1 and RAID 5, which are powerful enough to meet the needs of most home computer users.
RAID demands an even number of drives, usually two drives. To be honest, RAID 0 doesn’t provide data redundancy in that it scatters data across drives equally. More specifically, if a file is written to RAID 0 contains two drives, the file will be split into two parts, and each part is on the two drives separately. Even so, but it’s indeed able to offer you fairly fast performance. Therefore, if what you long for is fast speed and you do not concern about data loss, RAID 0 is advisable.
Unlike the RAID 0, RAID 1 will separate all internal drives into two sets. Hence, when a file is written to the first set, an extract copy of the file will be written to the second set in the meantime. Thus, you can definitely achieve fault tolerance from RAID 1. But it cannot be as fast as RAID 0 mentioned above. Also, this level is easy to set up and operate. Plus, there are many such RAID 1 systems available for home users in today’s market.
RAID 5 requires at least three drives in the system. It includes block-level striping with distribute data across all drives. Also, it will write parity codes to all disks as well, so that RAID 5 controller is allowed to rebuild the array when a hard drive fails. Thereby, as system has to write both data and parity to disks, RAID 5 is not as fast as RAID 0, but faster than RAID 1. Due to its more complex configuration, RAID 5 is only suitable for advanced users. For common users, RAID 0 and RAID 1 is more recommended.
Shirley Zhang is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including corrupt mdf and outlook repair software products. For more information visit www.datanumen.com