At 9:31 AM +0200 05/02/2013, Valter Prahlad wrote:
I'd suggest to go with the Firewire route. Since you have 5 drives
to test, opening the LaCie box and running a real HD diagnostic
tool, seems to me well worth it.
Well, at least for the speed of having another place to spin up the
drives. As far as I can tell, these tools don't support SMART over
firewire either.
At 4:06 AM -0500 05/02/2013, Kris Tilford wrote:
> It's a "better than nothing" alarm system, but I wouldn't trust it much.
I've had drives die that passed SMART right up until the moment they
died. I've seen drives with SMART errors that seemingly worked
fine. I did retire some drives with many SMART errors on the
assumption that many errors would eventually lead to failure, but, I
never saw a HD with SMART warning errors actually fail, while I saw
several die without any SMART warning errors beforehand. A lousy
diagnostic for sure.
Yea. But it's better than nothing. Them new-fangled drives are
designed to do their own bad block replacements in the background,
and present only a happy face to the world. And OS X believes it!
(what a stupid design feature in OS X!)
The problem isn't SMART. The problem is the OS' use of the information.
My interest is simply to watch the flow, while processing these
drives. I want to see why the NAS box is refusing them while DU is
happy with them. If it turns out that DU is hiding hundreds of bad
block replacements, or worse (seek errors etc), then I'd rather not
use the drives or offer them for sale...
- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.
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