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WDC官方不建議Desktop系列硬碟使用在RAID磁碟陣列環境下

WDC官方不建議Desktop系列硬碟使用在RAID磁碟陣列環境下

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

引用:

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.

WD DESKTOP系列硬碟有錯誤時，硬碟會進入deep recovery cycle模式，並進行2分鐘的修復動作，一般磁碟陣列控制器僅允許修復7~15秒，因此當硬碟沒有回應時，硬碟將被控制器視為故障，因此WD不建議使用WD Desktop系列硬碟用於磁碟陣列環境之下

之前是綠標不是嗎... :fear:

就是costdown所造成的差異吧

引用:

作者weirock

之前是綠標不是嗎... :fear:

從2009年開始，WD就把desktop級HDD TLER預設為Off....
那個時候WD就把這篇放到他的知識庫了....

只不過那時還可以用WDTLER.exe把TLER開啟
到2010年就全面改成用WDTLER.exe也無法開啟....

然後，WD在他販售的NAS有Raid功能的，
如果有附WD Desktop HDD...會發現TLER還是有開啟的.... :stupefy: :stupefy: :stupefy:

簡單說就是要逼用到RAID功能的使用者花多一點錢買RE系列嘛！

引用:

作者lightwing

H牌被W收購後~不知道會不會也這樣搞~ :fear:

可能售價太低、不爽開吧，想要區隔產品線以提高獲利。
不然附加價值應該是越多越有競爭力、怎麼還會自殘？
不過這招也快沒用了，RAID線、商用市場未必要買WD的，家用市場將會被SSD取代

引用:

作者weirock

H牌被W收購後~不知道會不會也這樣搞~ :fear:

等不再打日立標誌

以後只有 WD......

lag :confused: :jolin: :unbelief:

引用:

作者chaotommy

lag :confused: :jolin: :unbelief:

:jolin::jolin::jolin::jolin::jolin::jolin::jolin::jolin: