Raid 0, 1, 5
RAID, or Redundant Array of Independent Disks, is a method for storing data on multiple hard disks, then linking the disks so that the operating system on your server views them as a single entity. RAID can be configured using either hardware or software, though hardware based RAID performs significantly better. At WestHost, we offer hardware based RAID for SATA hard drives in 3 different configurations with our Dedicated Servers:
RAID 1: This type of RAID uses a method of data storage known as mirroring. This refers to the fact that every piece of data is written to at least two disks. As a result, RAID-1 offers a high degree of data security, but has a slight performance decrease because it requires capturing all data on two disks.
RAID 0: This type of RAID uses a method of data storage known as striping. The technology divides the data into pieces, and places each piece on a different drive. For instance, data piece A may be stored on Drive 1, while data piece B goes to Drive 2, C heads to Drive 3, and so on. Because the data is divided, RAID-0 offers the top level of performance for disk IO. It is usually used for multimedia applications like video editing, and for situations where data loss is not as much a concern as speed.
RAID 5: This type of RAID is the most widely used because it offers a useful combination of protection and speed. It works by making enough of the data redundant so that even if a drive fails, it's still possible to recreate and retrieve the information. Offering the best performance with data protection, this solution is ideal for high performance databases and sites that require high disk throughput.
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