In today’s competitive environment, the most valuable asset for any business or organization is data. Data loss means business loss. Even though you take a regular backup of all your data, you will need to take the time to restore those backups and those backups could be hours or days old, resulting in data loss. A fool proof system is hence needed for ensuring data protection against online failure of disk.
Redundant Array of Inexpensive Disks(RAID), is a way of logically configuring multiple disks together in a single array to increase performance as well as to prevent data loss in case of drive failure.
Depending upon the RAID type in use, RAID alleviates different issues associated with traditional hard drives, including high failure rate and limited speed due to its physical limitations. RAID levels 0, 1, 10 and 5 are the most popular.
This white paper discusses disk mirroring – RAID 1 in detail. When you download this copy you will learn about RAID 1 usages, its advantages and disadvantages as well.