Article Number: 000132906
This tutorial explains how to replace a disk in predictive or impending failure. A predictive failure is a feature of modern Hard Disc Drives (hard drive) designed to improve RAID reliability. A predictive failure indicates that a hard drive must be replaced before failure occurs.
During normal read/write operations, an error may occasionally occur on a hard drive. The controller identifies this error and repairs it. These errors are also known as "Bad Blocks". This is why the memory space on a hard drive is usually, slightly larger than specified. This space is used to relocate or repair any bad blocks that occur during normal operations. A predetermined threshold of bad blocks is assigned to an individual hard drive. When this threshold is reached, the controller changes the status of the hard drive to "Predictive Fail". The hard drive remains operational, however, the probability that the hard drive will fail, in the near future, is now high.
It is recommended that a hard drive in "Predictive Fail" status, should be replaced promptly to maintain the integrity of the RAID volume. To replace the hard drive, it must be removed safely from the RAID volume before physical replacement. Follow the process outlined below to change the hard drive status to offline and safely remove it from the RAID volume.
Follow the below process to offline, and safely remove the hard drive from the RAID volume.
PowerVault MD3200, PowerVault MD3200i, PowerVault MD3220, PowerVault MD3220i, PowerVault MD3260, PowerVault MD3260i, PowerVault MD3600F, PowerVault MD3600i, PowerVault MD3620F, PowerVault MD3620i, PowerVault MD3660f, PowerVault MD3660i
22 Sep 2021
5
Solution