4 棵黑標做 RAID 0 速度大越多少ㄋ

[opterontm]

4 棵 1 TB 黑標做 RAID 0 速度大越多少ㄋ

因為有朋友 2 顆不用

 

[qpwoei0955]

實測最準確吧...
既然他都不要用了...拿過來跑就清楚了!!!!

 

[bhg0523]

我之前用wd1001fals x4 raid0
MB : evga p55 e659
CPU : i7 860
RAM : G.Skill 2200@2000 8g
實測讀寫大約平均都在450MB/s 左右
檔案多了之後, 大概就是420MB/s 左右
現在硬碟裝到HP Microserver, 沒辦法實測數據囉

 

[ST-15K.3]

WD官方不建議非企業級硬碟來做RAID喔

 

[csh791204]

老實說我蠻想知道為何非企業及不能組(雖然我都買企業級的....)

0+0我估計應該有400MB吧

 

[ST-15K.3]

老實說我蠻想知道為何非企業及不能組(雖然我都買企業級的....)

0+0我估計應該有400MB吧

http://wdc.custhelp.com/app/answers/detail/a_id/1397

Western Digital manufactures desktop edition hard drives and RAID Edition hard drives. Each type of hard drive is designed to work specifically as a stand-alone drive, or in a multi-drive RAID environment.

If you install and use a desktop edition hard drive connected to a RAID controller, the drive may not work correctly. This is caused by the normal error recovery procedure that a desktop edition hard drive uses.

Note: There are a few cases where the manufacturer of the RAID controller have designed their cards to work with specific model Desktop drives. If this is the case you would need to contact the manufacturer of that controller for any support on that drive while it is used in a RAID environment.

When an error is found on a desktop edition hard drive, the drive will enter into a deep recovery cycle to attempt to repair the error, recover the data from the problematic area, and then reallocate a dedicated area to replace the problematic area. This process can take up to 2 minutes depending on the severity of the issue. Most RAID controllers allow a very short amount of time for a hard drive to recover from an error. If a hard drive takes too long to complete this process, the drive will be dropped from the RAID array. Most RAID controllers allow from 7 to 15 seconds for error recovery before dropping a hard drive from an array. Western Digital does not recommend installing desktop edition hard drives in an enterprise environment (on a RAID controller).

Western Digital RAID edition hard drives have a feature called TLER (Time Limited Error Recovery) which stops the hard drive from entering into a deep recovery cycle. The hard drive will only spend 7 seconds to attempt to recover. This means that the hard drive will not be dropped from a RAID array. While TLER is designed for RAID environments, a drive with TLER enabled will work with no performance decrease when used in non-RAID environments.

當WD DESKTOP系列硬碟有錯誤時，硬碟便會進入deep recovery cycle模式，並進行為時2分鐘的修復動作，但一般磁碟陣列控制卡允許修復的時間僅為7~15秒，因此當硬碟沒有回應時，變將硬碟視為故障，而無法正常使用，故WD不建議使用WD Destop系列硬碟用於磁碟陣列環境之下

 

[sweethouse]

速度不慢, 系統碟最高讀取, 輕易就能上600
但成天會出現磁碟錯誤要驗證修復,
光是要穩定, 各項驅動, bios要試上三~四個工作天,

但穩定了也別太高興,
個人當時試了很久搞定, 以為接下來可快樂用, 結果,
沒想到它掛點的速度很快,

個人這邊, 二組,
四顆一組的wd陣列來說,
每組一年半內就掛了一顆, 發生錯誤超過五十次

好險始終沒敢相信w牌的會從良,
都備有另一組四顆陣列是s牌的,
或獨立非陣列的 W牌 ,不然就慘死

如果一但MxR..等受損,
使用一鍵還原, 也沒得還原, 得用映像檔加開機碟

目前,
組raid 還是改用 s雞它們家的,
速度較慢些, 但不會成天自找麻煩
至於以後...天曉得

w 牌的, 目前只能拿去當動物碟,
或非陣列文書機使用
( 超過一年過身, 得付500~600元換碟費, 購買時, 請記得加入預算中 )

 

[ponda91]

我之前用wd1001fals x4 raid0
MB : evga p55 e659
CPU : i7 860
RAM : G.Skill 2200@2000 8g
實測讀寫大約平均都在450MB/s 左右
檔案多了之後, 大概就是420MB/s 左右
現在硬碟裝到HP Microserver, 沒辦法實測數據囉

大大，請問一下，您當初組好4顆硬碟當RAID0以後，電腦開機進系統的速度 & 開啟檔案會和讀取速度為400多MB/1秒的SSD一樣快嗎? 還是說這些速度只和ACCESS TIME有關係?

 

[bhg0523]

不會
開機跟小檔讀取速度有關
開啓檔案要看檔案大小
總之都是ssd勝出, 我是用G2 120G & 320 120G raid做比較

 

[ponda91]

不會
開機跟小檔讀取速度有關
開啓檔案要看檔案大小
總之都是ssd勝出, 我是用G2 120G & 320 120G raid做比較

感謝大大回覆，看來普通硬碟組RAID0要超越SSD還是有困難...機械化和電子化還是有差別。