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Raid

Yazoofiend
By Yazoofiend
in Storage Devices
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Can someone explain to me what raid is in a simple way and what the different types of raids are and what differences they make? I've just always wondered.

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Main System: Phobos

AMD Ryzen 7 2700 (8C/16T), ASRock B450 Steel Legend, 16GB G.SKILL Aegis DDR4 3000MHz, AMD Radeon RX 570 4GB (XFX), 960GB Crucial M500, 2TB Seagate BarraCuda, Windows 10 Pro for Workstations/macOS Catalina

 

Secondary System: York

Intel Core i7-2600 (4C/8T), ASUS P8Z68-V/GEN3, 16GB GEIL Enhance Corsa DDR3 1600MHz, Zotac GeForce GTX 550 Ti 1GB, 240GB ADATA Ultimate SU650, Windows 10 Pro for Workstations

 

Older File Server: Yet to be named

Intel Pentium 4 HT (1C/2T), Intel D865GBF, 3GB DDR 400MHz, ATI Radeon HD 4650 1GB (HIS), 80GB WD Caviar, 320GB Hitachi Deskstar, Windows XP Pro SP3, Windows Server 2003 R2

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The main types are:

  • RAID 0, which combines all drives into one big virtual drive, increasing performance and the likelihood of failure, since a problem with any of the physical drives means you lose everything on the virtual drive.  The amount of space you get is equal to all drives combined*
  • RAID 1, which combines multiple drives by putting identical information on all of them, increasing reliability since to lose everything you would have to lose all of your physical drives, not just one.  The amount of space you get is equal to your smallest physical drive.
  • RAID 5 & 6, which does a sort of cross between the two, allowing you to lose 1 or 2 physical drives without losing any data, but giving you capacity greater than any of the physical drives, but less than you would get with all of them combined in RAID 0.

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