Gateway FX530XM 8512162 - Gateway Computer Reference Guide (for Gateway FX-Ser - Page 48
Understanding RAID 10
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CHAPTER 4: Advanced Hardware Setup In the graphic below, each letter represents a unique block of data, and the number next to each number represents which copy of the data files are stored. The "P" next to a letter represents parity (error-checking) information, and each column represents a separate hard drive. RAID 5 A1 A2 AP B1 BP B2 CP C1 C2 Understanding RAID 10 RAID 10 (also called RAID 1+0 or RAID 1&0) contains sets of RAID 1 mirrors acting as drives within a RAID 0 striping array. With this setup, the array could survive one drive failure in each mirror array. In the graphic below, each letter represents a unique block of data, and each column represents a separate hard drive. RAID 0 RAID 1 RAID 1 A A C C E E B B D D F F Drawback A RAID 5 array is treated as one drive with the capacity of all but one of the drives added together. RAID 10 treats the entire array as a single drive with twice the storage capacity of the smallest drive. So if you have four drives (350 GB, 300 GB, 250 GB, and 200 GB) in a RAID 10 array, your computer recognizes a single drive with 400 GB total capacity. 42