![]() The RAID controller handles the combining of drives into these different configurations to maximize performance, capacity, redundancy (safety) and cost to suit the user needs. It is possible to configure these RAID levels into combination levels - called RAID 10, 50 and 60. When a failed drive is replaced, the lost data is rebuilt from the remaining drives. Parity (RAID 5 & 6) provides fault tolerance by examining the data on two drives and storing the results on a third.Mirroring (RAID 1) replicates data on two drives, preventing loss of data in the event of a drive failure. ![]() Striping (RAID 0) writes some data to one drive and some data to another, minimizing read and write access times and improving I/O performance.RAID (Redundant Array of Inexpensive Disks) is a data storage structure that allows a system administrator/designer/builder/user to combine two or more physical storage devices (HDDs, SSDs, or both) into a logical unit (an array) that is seen by the attached system as a single drive. All organizations and users should always have a solid backup strategy in place. NOTE: RAID is not a substitute for regularly-scheduled backups. This white paper discusses the various types of RAID configurations available, their uses, and how they should be implemented into data servers. Both are necessary to ensure your data is secure. There are two common practices for protecting that data: backups (protecting your data against total system failure, viruses, corruption, etc.), and RAID (protecting your data against drive failure). Choosing the Right RAID Configurations - Which RAID Level is Right for you?įor any organization, whether it be small business or a data center, lost data means lost business.
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