BeleBala

用四隻 peak transfer rate : 70MB/s ge HDD
假設行 RAID 0 = 4x70MB/s = 280MB/s peak
RAID 0+1 = 140MB/s peak

(((我知道冇可能真係幾個個 HDD 就乘幾多...but anyway...to make it easier to understand = =)))

咁 RAID 5 係咪 210MB/s peak? (by using above "theory")
同埋 RAID 5 ge seek time 係咪比較 RAID 0 短的?




我有冇理解錯?
原諒我咁白痴...

BeleBala

仲有...
RAID 5 的 HDD 係咪一定要 Identical?
咁如果我想換 HDD 點算?? .__.

RAID 0+1 可唔可以換兩隻新 HDD 落去做 rebuild?
Original : 320GB x4 @ RAID 0+1
後來 : 320GB x2 @ RAID 0 + 500GB x2 @ RAID 1
再換 : 500GB x4 RAID 0+1

會唔會少左 180GB?
或者可以點解決?
Backup -> 重裝? .__.

BeleBala

引用:

Originally posted by qcmadness at 6/2/2007 00:45:

咁多問題, 最多逐條答

理論上raid 5都好快, 但係個XOR processor做唔做到咁快係1個問題...

咁即係最好 = RAID 0+1?