Careful with the word faster in this context-- Higher RPM == Faster random seek times.<br><br>SAS drives can be had up to 15k (with a significant price increase).<br><br>--Dennis<br><br><br><br><div class="gmail_quote">On Fri, Sep 23, 2011 at 3:07 PM, Lightner, Jeff <span dir="ltr"><<a href="mailto:JLightner@water.com">JLightner@water.com</a>></span> wrote:<br>
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<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">rpm = revolutions per minute rather than RedHat Package Manager in this context.<u></u><u></u></span></font></p>
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<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">In our largest disk array we have SSD, SAS and SATA. The SAS are 10,000 RPM but the SATA are only 7200 RPM so the former are faster.<u></u><u></u></span></font></p>
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<p class="MsoNormal"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma"> <a href="mailto:ale-bounces@ale.org" target="_blank">ale-bounces@ale.org</a> [mailto:<a href="mailto:ale-bounces@ale.org" target="_blank">ale-bounces@ale.org</a>]
<b><span style="font-weight:bold">On Behalf Of </span></b>Jim Kinney<br>
<b><span style="font-weight:bold">Sent:</span></b> Friday, September 23, 2011 2:57 PM<br>
<b><span style="font-weight:bold">To:</span></b> Atlanta Linux Enthusiasts<br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [ale] RAID 10 Question</span></font><u></u><u></u></p>
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<p><font size="3" face="Times New Roman"><span style="font-size:12.0pt">$(x4 1 TB sata) < $(x1 1TB sas)<br>
Both are 3Gbps but sas has faster rpm and higher heat tolerance.<br>
But sata is easier to replace before failure due to cost. Replace every 4 years with a 5 year warranty drive and send it to a desktop.<u></u><u></u></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:12.0pt">On Sep 23, 2011 2:50 PM, "Greg Clifton" <<a href="mailto:gccfof5@gmail.com" target="_blank">gccfof5@gmail.com</a>> wrote:<br type="attribution">
> For a relatively small (2TB capacity) RAID 10 array comprised of 4x1TB hard<br>
> drives, is there any performance/reliability advantage in using SAS drives<br>
> vs SATA drives?<br>
> <br>
> Thanks,<br>
> GC<u></u><u></u></span></font></p>
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