<i>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.
If you install a RAID edition hard drive in a desktop computer, the computer system may report more errors than a normal desktop hard drive (due to the TLER feature). Western Digital does not recommend installing RAID edition hard drives into a desktop computer environment.</i>
<b>Links zum Thema:</b><ul><li><a href="http://www.westerndigital.com/en/company/releases/PressRelease.asp?release={C0550144-B547-4F19-94CB-0AFDC97CE602}" target="b">Pressemitteilung</a></li><li><a href="http://www.wdc.com/en/products/Products.asp?DriveID=238&Language=en" target=b">WD5000YS Datenblatt</a></li><li><a href="http://www.westerndigital.com/en/library/sata/2579-001098.pdf" target="b">Time Limited Error Recovery (TLER) Dokumentation (PDF)</a></li></ul>