[Tfug] And another one down

[Harry McGregor]

On 9/9/13 9:52 PM, Timothy D. Lenz wrote:

<snip>

If the Seagates were not "array" optimized drives, then they quite
likely were going into thermal recalibration, which takes the drive
offline for a few seconds and brings it back.

My personal opinion, dealing with thousands of drives, is that I really
like the HGST drives, and don't care much for Seagate anymore (and this
is enterprise class, near line sas and enterprise sata).  After HGST, I
go for WD SAS, then WD Black, then Red.  I don't like either the Blue or
the Green for array use.

As far as the fans causing problems, I have seen some VERY odd things
cause drive problems, but have yet to see fans cause it...

(and yes, I deal with enterprise storage as part of my job).

-Harry
> Here are quotes from the post:
> ----------------------------
> "Completely anecdotal evidence, but I was mixing WD Reds and Seagates
> in a QNAP RAID 6 each 3TB for a total of 6TB, and the Seagates kept
> making sounds like they were about to hurl.  Testing each drive
> individually with badblocks and smart came up with all drives OK.  But
> it kept chucking the WDs one by one.  Eventually I removed the
> Seagates and replaced them with WDs and since then no drives have been
> thrown out.
>
> I can only theorise that there may be a timing issue between WD Reds
> and Seagate. "
> ----------------------------
> "The sneeze story isn't true. Modern enterprise are sensitive, for
> example some 24k RPM fans will cause drives to fail within time, but
> 12k fans won't (40mm).
>
> However, if your room and your servers are normal, you've nothing to
> worry about."
>
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