RAID without TLER

[Lennart Sorensen]

On Sat, Feb 16, 2013 at 05:47:48PM -0500, D. Hugh Redelmeier wrote:
> This old article
> <http://www.smallnetbuilder.com/nas/nas-features/31202-should-you-use-tler-drives-in-your-raid-nas>
> claims that TLER (Time Limited Error Recovery) is not needed for disks in 
> some home RAID systems.
> 
> You can read some forum posts too.
> 
> One mistake in the article:
> 	their NAS RAID controllers don't depend on or even listen to
> 	TLER, CCTL, ERC or any other similar error recovery signal
> 	from their drives.
> As I undertand it, there isn't a TLER signal.  TLER just puts a bound
> on how long a disk drive will take before responding to a read
> request.
> 
> Here's another thread that seems to confirm that Linux software RAID 
> handles disks without TLER.
> 
> <http://forums.storagereview.com/index.php/topic/29208-how-to-use-desktop-drives-in-raid-without-tlererccctl/>
> 
> Just much more patience is needed in the RAID system when waiting for
> a result from a disk?

Of course now that western digital red drives are available, why would
you not use those?

-- 
Len Sorensen
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