I have servers configured w/ HW controlled raid and have had virtually
NO problems w/ those. Both my backup machines are SW raid... I've had to
replace multiple drives on the SW configured raid. The drives are either
SAME MODEL or same Seagate drive family in all cases and one server is
actually the same SuperMicro model as one of the desktops.
I had attributed this to just a hotter running environment.. the backup
machines are desktop workstations w/ NVIDIA graphics cards that run
pretty hot, but I'm rethinking this now.
Any chance SW raid is running the HDs harder/hotter than the HW raid?
All machines run 24-7-365 so power cycling is not the issue and the
server room is not necessarily cooler than the office/desktop environment.
Tom
On 09/07/2017 10:29 AM, Wols Lists wrote:
On 07/09/17 14:33, Thomas C. Bishop wrote:
I see what you mean... seems it would be simple enough to find this
spec. but not clear if supported or not.
Seagate claims this is a "best fit applications" drive for High-Capacity
RAID storage but never lists ERC as feature.
http://www.seagate.com/files/www-content/partners/my%20spp%20dashboard/learn/en-us/docs/storage-solutions-guide-jul-2013-ssg1351-13-1307us.pdf
pg 30 of the brochure.
elsewhere@seagate I read ERC is a subset of the smart control commands
which are supported on this drive so one _might_ think it's supported.
FYI: smartctl --xall doesn't provide an answer either.
closest it comes is
SMART support is: Available - device has SMART capability.
My Barracudas explicitly say SMART is available (disabled by default on
power-up :-(, and ERC is not available. Yours mentions neither ERC, nor
the error timeout, so something's weird somewhere ... quite possibly the
drive can do it, but it's badly documented and the smartctl authors
don't know the magic incantation ... :-)
Or, like the Barracudas have a long timeout hard encoded, possibly the
Constellations have a short timeout hard encoded.
Cheers,
Wol
--
***********************************
Thomas C. Bishop
Hazel Stewart Garner Associate Professor
Chemistry & Physics
Tel: 318-257-5209
Fax: 318-257-3823
www.latech.edu/~bishop
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