From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Browning Subject: Re: WD "RED" drives - are they any good for mdadm? Date: Fri, 8 Feb 2013 15:05:33 -0800 Message-ID: <201302081505.33831.db@kavod.com> References: <50CF2112.1090406@gmail.com> <5115727E.9050601@tmr.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5115727E.9050601@tmr.com> Sender: linux-raid-owner@vger.kernel.org To: Linux RAID Cc: maurice , Drew , Bill Davidsen List-Id: linux-raid.ids On Friday 08 February 2013 1:47:42 pm Bill Davidsen wrote: > maurice wrote: > > Thinking about trying some WD "RED" drives for a build. > > Model # WD20EFRX > > > > Does anyone have any experience with these they would care to share? I've bought 8 of them over the last 6 months. One was DOA. Right now they're all in a linux md raid6 (LSI 9220-8i HBA) and working great. The reason I selected this model is price per GB, TLER, and warranty. > But the actual seek time, rpm and such, didn't pop up in the few places > which I checked. This is one that I read before buying: http://www.storagereview.com/western_digital_red_nas_hard_drive_review_wd30efrx On Friday 08 February 2013 2:31:24 pm Drew wrote: > I personally have used a 4 pack of these hung off a LSI 9204 raid > controller and performance is okay but not spectacular. Agreed. I only get about 145 MB/s seq r/w on the outer edge of the spindle and I'm guessing it will probably be around 80 MB/s on the inner edge. Definitely not 15K enterprise drives. On the 8-disk raid6 I get about 130 MB/s rebuild, 1000 MB/s seq read. -- DB