If I had not confused myself (and without searching on the web), TLER is meant for error recovery, and stands for Time-Limited Error Recovery. When your drive has TLER, it limits the amount of time for error recovery done by the hard disk itself.
This feature is generally needed for RAIDs, so that we can leave it to RAID to perform the error recovery. If the hard disk’s error recovery is taking too long, it could somehow fail the RAID module’s error recovery, or something like that.
So my guess is, if you’re using it as a standalone drive, if there’s any failing sector, TLER will limit your hard disk’s time spent in trying to recover it. If this is not an issue for you, then you should be able to use it as a standalone drive.
