WD官方網站訊息顯示，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的修復時間僅為7~15秒，因此當硬碟沒有回應時，便將硬碟視為故障，而無法正常使用，故WD不建議使用WD Desktop系列硬碟於磁碟陣列環境之下。

WD官方網站:
http://wdc.custhelp.com/cgi-bin/wdc...&p_sid=PV5Aepsj

此頁內容原文摘錄如下：
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 drives to work with specific model Desktop drives. If this is the case you would need to contact the manufacturer of that enclosure 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