아래는 이전에 웬디에 문의 했을때 받은 공식 답변 입니다.

짧게 줄이면 하드 디스크들이 대기 상태에 들어 갔다가 깨어날때 혹은 에러가 발생 했을때 이걸 정정해서 응답하는데

시간이 걸리는데 대부분 레이드 시스템들이

7~15초이내에 응답하지 못하면 디스크가 고장 났다고 판단하고 디스크를 그냥 드롭 시켜 버리는 관계로

데스크탑 버전의 하드들은 레이드 컨트롤러에 달지 말라고 합니다.

블루나 블랙의 경우는 크게 문제 되는 경우는 없지만 그린 시스템은 저전력에 최적화 되어 있기 때문에

대기 상태에서 리스폰으로 바뀌는 시간이 다른 것들에 비해 많이 길어서 정해진 응답 시간내에 답하지 못해서

문제가 생기는 경우가 아주 많습니다.

Western Digital manufactures desktop edition hard drives and RAID Edition hard drives. Each type of hard drive is designed to work specifically in either a desktop computer environment or a demanding enterprise environment.

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

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. Though TLER is designed for RAID environments, it is fully compatible and will not be detrimental when used in non-RAID environments.