6
RAID?
:
- , . (, , );
- . ;
- . , . , , , .
RAID .
RAID?
1987 (Patterson), (Gibson) (Katz) (RAID) (A Case for Redundant Arrays of Inexpensive Disks (RAID)). , RAID - Redundant Array of Independent ( Inexpensive) Disks ( ( ) ). RAID : / , , , . .
, , . . .
() : RAID-1, RAID-2, , RAID-5. , . RAID-0, .
RAID ?
RAID-0. . RAID-0 , , "Striping" ("" "").
RAID-0 , . RAID-0 . RAID-0 , .
|
|
: - , . , , Mylex, , , , RAID-0 / 96%, - 143% ( Miro VIDEO EXPERT Benchmark).
- 2.
RAID-1. "Mirroring" (" ") , .
. , , , . , . RAID-1 100% - / .
RAID-1 , , . RAID-1 , .
- 2.
RAID-1 , , RAID-0. RAID RAID-10 (RAID 0+1)
-4.
: , - .
RAID-2. . ECC ( ). ECC , RAID-2 RAID-3 , , .
RAID-3. RAID-2 , .
RAID-3 ECC, . (XOR) . . - , RAID-3 . RAID-3 . , . , .. RAID-5 . .
|
|
-3.
RAID-4. RAID-4 RAID-3 , . ( , ), . , , . RAID-5.
RAID-5. . RAID-4 . , RAID-4, , , RAID-4, , .
. , - , . , .
: . .
-3.
RAID-1 RAID-5?
RAID-5 RAID-1 , , . RAID-5 , .
. RAID-5 . , . . XOR . , =1 , . . , , RAID-5 , XOR.
, ( ) : . , RAID-5 , RAID-1 3:5 1:3 (.. RAID-5 3/5 1/3 RAID-1). - RAID-5 . , .