Date: Thu, 18 Jul 2013 12:31:06 -0700 From: Charles Swiger <cswiger@mac.com> To: Dr Josef Karthauser <joe@karthauser.co.uk> Cc: freebsd-stable@freebsd.org, Andrea Venturoli <ml@netfence.it> Subject: Re: Drive failures with ada on FreeBSD-9.1, driver bug or wiring issue? Message-ID: <8AB7617E-791C-45D8-9FA1-A927057EE048@mac.com> In-Reply-To: <5B6FB80D-609D-4336-B3F8-C09AA7CACB44@karthauser.co.uk> References: <20130716225013.1C63B23A@babel.karthauser.co.uk> <60F7BE75-5E2F-471E-A9CE-AF4CD17D96E2@karthauser.co.uk> <281DBD06-81D5-4DDD-9464-B96C80C22C3F@gid.co.uk> <51E7DA7C.8060105@netfence.it> <5B6FB80D-609D-4336-B3F8-C09AA7CACB44@karthauser.co.uk>
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Hi-- On Jul 18, 2013, at 12:13 PM, Dr Josef Karthauser <joe@karthauser.co.uk> = wrote: > On 18 Jul 2013, at 13:07, Andrea Venturoli <ml@netfence.it> wrote: >=20 >> Perhaps they are WD Green drives? >=20 > They're WD RE2-GP 1 TB drives (model WD1000FYPS) , not sure if that's = green or not. Yes, those are WDC's Green drives, although they are also the higher = grade version as compared to standard desktop drives which are supposed = to have firmware which plays nice with RAID (TLER, time-limited error = recovery). Updating the firmware and increasing the timeout before these spin down = automagically is likely to help, but as Andrea noted, such drives do = have quite a history of timeout problems due to excessive head parking = and their power conservation attempts. Regards, --=20 -Chuck
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