Re: Use of WD20EARS with MDADM

[Mark Knecht <markknecht@gmail.com>]

On Thu, Apr 22, 2010 at 5:03 PM, Richard Scobie <richard@sauce.co.nz> wrote:
> Mark Knecht wrote:
>
>> Keep in mind that just because we possibly solve the load cycle count
>> problem doesn't mean that the drive will work for RAID. WD has also
>> stated that these drives don't have any TLER features.
>
> I completely agree and wonder if some have unrealistic expectations.
>
> The WD20EARS is listed as a desktop drive and is cheap - $/GB.
>
> The RE-GP, (if you need the green features, otherwise RE series), version
> WD2002FYPS cost more and has the following extra features over the WD20EARS:
>
> RAFF - vibration handling
> TLER - RAID optimised error handling
> An MTBF spec and the comment
>
> "Each drive is put through extended burn-in testing with thermal cycling to
> ensure reliable operation."
>
> Which presumably helps weed out infant mortality cases. It is also
> interesting to note that while all the RE series drives have a spindle
> support bearing at both ends, only the 2TB desktop drive does.
>
> In light of all the above, you get what you pay for and need to adjust
> expectations accordingly.
>
> Regards,
>
> Richard

<hehe!>

If drives always worked there wouldn't be much reason for RAID1, would
there? ;-)

Cheers,
Mark