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Game Development Dictionary


RAID


RAID stands for Redundant Array of Independent Disks. Basically you can connect normal IDE drives onto your RAID controller and then select a mode for operation, most controllers at time of writting support 4 modes, stripping (RAID 0), Mirroring (RAID 1), stripping and Mirroring (RAID 0+1) as well as the SPAN mode.

To Use RAID 0 or 1 you need 2 hard drives (any normal IDE), and for 0+1 you need at least 4 drives, while for spanning you can have any number greater then 2.

RAID 1 impoves your proformence by turning your connected hard drives effectively into one large one, as well as sharing the work between them, which doubles the proformence of the drives.

RAID 0 creates and stores a on the fly copy of your first hard disk onto the seccond drive in case of failure.

RAID 0+1, you have a RAID 0 working which is backed up onto other drives which are running in RAID 1.

SPAN connects any number of drives >2 togethor so that they appear as one big drive, however it DOES NOT share work between them like RAID 0, so you don't get a proformence increase.



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