Date: Thu, 18 Nov 2010 22:44:12 +0000 From: Paul Wootton <paul@fletchermoorland.co.uk> To: Chuck Swiger <cswiger@mac.com>, Andy Wodfer <wodfer@gmail.com> Cc: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: FreeBSD and large harddrives Message-ID: <4CE5AC3C.8000402@fletchermoorland.co.uk> In-Reply-To: <218D523D-A5BF-4E37-BC75-2FBF67C1D618@mac.com> References: <AANLkTimh50XGrXraNzBCeY9mZj3wsWPG=RRkRiF_fRf=@mail.gmail.com> <4CE52F49.4010602@sentex.net> <218D523D-A5BF-4E37-BC75-2FBF67C1D618@mac.com>
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On 11/18/10 18:23, Chuck Swiger wrote: > 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 From my own personal experience, I will not use WD Green drives again, be it for RAID or not. I have a one as my boot up and OS drive on a home server configured as a single drive in a ZFS pool (so none RAID). The load/unload cycle is rated at 300,000. Here is a copy from smartctl 9 Power_On_Hours 0x0032 092 092 000 Old_age Always - 5958 193 Load_Cycle_Count 0x0032 001 001 000 Old_age Always - 885346 The drive has less than 250 days online, but is nearly at tripple the rated load/unload cycle. While the drive is still working, I have NO faith in it anymore and am just waiting for it to die. Paul
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