Ну что никто незнает ?
Сообщение изменено: Clock (12 апреля 2009 - 19:39 )
Отправлено 12 апреля 2009 - 15:54
Сообщение изменено: Clock (12 апреля 2009 - 19:39 )
Отправлено 12 апреля 2009 - 20:38
* RAID 0 (striped disks) distributes data across several disks in a way that gives improved speed and no lost capacity, but all data on all disks will be lost if any one disk fails.
* RAID 1 (mirrored settings/disks) duplicates data across every disk in the array, providing full redundancy. Two (or more) disks each store exactly the same data, at the same time, and at all times. Data is not lost as long as one disk survives. Total capacity of the array equals the capacity of the smallest disk in the array. At any given instant, the contents of each disk in the array are identical to that of every other disk in the array.
* RAID 5 (striped disks with parity) combines three or more disks in a way that protects data against loss of any one disk; the storage capacity of the array is reduced by one disk.
* RAID 6 (striped disks with dual parity) (less common) can recover from the loss of two disks.
* RAID 10 (or 1+0) uses both striping and mirroring. "01" or "0+1" is sometimes distinguished from "10" or "1+0": a striped set of mirrored subsets and a mirrored set of striped subsets are both valid, but distinct, configurations.