http://sqlblog.com/blogs/linchi_shea/archive/2008/12/08/performance-impact-file-fragmentation-and-san-part-ii.aspx1KB Sequential Writes on DAS There were some questions about the use 1KB sequential writes in my previous post to test the performance impact of file fragmentation on a drive presented from a high end enterprise class disk array. There were two reasonsenCommunityServer 2.1 SP2 (Build: 61129.1)http://sqlblog.com/blogs/linchi_shea/archive/2008/12/08/performance-impact-file-fragmentation-and-san-part-ii.aspx#10380Mon, 08 Dec 2008 19:29:44 GMT21093a07-8b3d-42db-8cbf-3350fcbf5496:10380Brent Ozar<p>I'm excited to see you blogging again, sir! &nbsp;I missed your disk metrics. &nbsp;Keep up the good work - this is one of the things that takes DBAs forever to do, and it's hard to work it into a DBA schedule. &nbsp;Good stuff.</p> http://sqlblog.com/blogs/linchi_shea/archive/2008/12/08/performance-impact-file-fragmentation-and-san-part-ii.aspx#10393Tue, 09 Dec 2008 00:12:06 GMT21093a07-8b3d-42db-8cbf-3350fcbf5496:10393James Luetkehoelter<p>Ooo, nice Linchi. I run into many a SAN administrator who is adamant that fragmentation just &quot;doesn't happeon on a SAN, and if would the impact would be negligible&quot;. </p> <p>Great to have quantitative validation!</p> http://sqlblog.com/blogs/linchi_shea/archive/2008/12/08/performance-impact-file-fragmentation-and-san-part-ii.aspx#10439Wed, 10 Dec 2008 17:19:14 GMT21093a07-8b3d-42db-8cbf-3350fcbf5496:10439Linchi Shea<p>256KB Sequential Reads In my two previous posts ( 1 , 2 ), I highlighted the fact that while file fragmentation</p> http://sqlblog.com/blogs/linchi_shea/archive/2008/12/08/performance-impact-file-fragmentation-and-san-part-ii.aspx#10690Mon, 22 Dec 2008 16:40:25 GMT21093a07-8b3d-42db-8cbf-3350fcbf5496:10690Linchi Shea<p>Lies, damned lies, and statistics! If you have read my three previous posts ( 1 , 2 , 3 ), you may walk</p>