Date: Thu, 18 Nov 2010 10:23:01 -0800 From: Chuck Swiger <cswiger@mac.com> To: Andy Wodfer <wodfer@gmail.com> Cc: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: FreeBSD and large harddrives Message-ID: <218D523D-A5BF-4E37-BC75-2FBF67C1D618@mac.com> In-Reply-To: <4CE52F49.4010602@sentex.net> References: <AANLkTimh50XGrXraNzBCeY9mZj3wsWPG=RRkRiF_fRf=@mail.gmail.com> <4CE52F49.4010602@sentex.net>
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On Nov 18, 2010, at 5:51 AM, Mike Tancsa wrote: > On 11/18/2010 7:16 AM, Andy Wodfer wrote: >> Harddrive speed is not so important so a 5400rpm drive >> would be OK. Seems like the green line of WD harddrives use both 5400rpm and >> 7200rpm. I will use RAID 5. > > I would stay away from the green series hard drives for this > application. There have been a number of reports of issues with the > drive's power saving design causing problems when used in raid arrays. > Search the list for more details. Use their black series instead. While the WDC green drives are unsuitable for any RAID application, and the WDC black series drives would be better, I'd only use them for a RAID-1 or RAID-10 setup. If the OP wants to use RAID-5 then you really need to go with the RE3/RE4 or RE-GP enterprise models due to TLER: http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faqid=1397 Otherwise, you're quite likely to have a drive or two get dropped out of the array due to a single bad sector, and you might end up having the entire RAID-5 volume getting corrupted as a consequence.... Regards, -- -Chuck
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