Subject: Storage | August 3, 2012 - 02:25 PM | Allyn Malventano
Tagged: western digital, WD, TLER, red, raid, hdd
This morning I received a tweet about WD Red drives not supporting Time Limited Error Recovery. TLER is the feature which allows a RAID comprised of Reds to much more gracefully handle drive failures and/or read errors. It's carried down from enterprise drives like the RE4 and RE4-GP.
I'm posting this quick note here to let the masses know that the Red drives *do* in fact support TLER. It's a primary component of NASware - the NAS aware firmware that drives the Reds. Here's the official reply I received from Western Digital:
WD does enable intelligent error recovery controls, which is not the same as a desktop drive. WD's exclusive NASware technology is built in each WD Red drive, which reduces the concern with using desktop drives in a RAID environment.
More info on details of NASware can be found here: http://www.wd.com/en/products/
Western Digital has assured me they are tracking down where the miscommunication occurred.