Content deleted Content added
No edit summary |
Undid revision 245671156 by 84.152.250.66 (talk) |
||
Line 19:
It is important to understand that TLER should be "Enabled" for a hard disk if it is being used in a RAID array to prevent the recovery time from a disk read or write error from taking too long and preventing the RAID controller from flagging the drive as failed and dropping the drive from the array. If a drive is dropped from an array due to it passing the timeout threshold of the RAID controller due to taking too much time performing error correction, the hard disk will need to be manually re-added to the array, requiring a re-build and re-synchronization of the hard disk with the rest of the disks in the array. In the remote possibility that two drives that do not have TLER enabled happen to encounter a disk error that takes too much time to recover, both of these drives might be flagged as failed and dropped from the RAID array, effectively breaking the array and requiring either a complete data restore from backup or manual intervention to force the array to re-recognize the drives as clean and online.
On the other hand it would be prudent to disable TLER for a RAID Edition hard drive being used as a stand-alone drive to allow it more time to recover from disk read or write errors, increasing the probability of data recovery.
{| class="wikitable"
| |||