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Date: Fri, 25 Sep 2015 18:35:04 -0400
From: Quartz <quartz@sneakertech.com>
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Subject: Re: ZFS ready drives WAS: zfs performance degradation
References: <56019211.2050307@dim.lv>
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>I got convinced several
> years ago that the 2.5" drives were better built

This can be true under some cases. Laptop drives are more likely to be 
knocked around, so sometimes manufacturers will actually build them 
better to handle it. (Sometimes).