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Newsgroups: comp.sys.ibm.pc.hardware.storage
From: Arno <m...@privacy.net>
Date: 23 Apr 2012 07:44:15 GMT
Local: Mon, Apr 23 2012 3:44 am
Subject: Re: Slow write speeds on a WD 500GB drive
bbbl67 <yjk...@gmail.com> wrote:
From my experience, this sounds like the drive has problems
> A friend of mine had an WD My Book external case, which contained a > 500GB WDC WD5000AAVS-00ZTB0 hard drive inside it. At some point along > the way the My Book's interface failed, it's warranty was expired, and > so we took its hard drive out and installed it directly inside his PC > case. This was back in mid- to late-2011, that it was transferred from > external to internal. It seemed to be fine for the most part in > performance, but recently we did some benchmarking and we were shocked > to find that although its reading speeds seem normal (around 50-60 MB/ > s), its write speeds were shockingly low (around 10 MB/s, if even > that). What could cause such a weird asymmetry in read vs. write > speeds? It didn't seem that slow while it was inside the My Book case. positioning or finding sectors. If it was finding sectrors, then the read-speed should also be affected. My guess would be weak power or vibration that makes the more precise head positioning on writes difficult. > This is one of those WD Caviar Green drives, so I'm wondering if there
Not that bad. > is some kind of power savings setting affecting it? Arno
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