<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Craig,<div class=""><br class=""></div><div class="">Spinning disk all the way for your initial work space, you can do SSD for longer storage.</div><div class=""><br class=""></div><div class="">You don’t need to do SSD for default storage - it’s not worth the time or cost IMO (which is based on 4 years in the video surveillance industry).<br class=""><div class=""><br class=""></div><div class="">—</div><div class="">Ryan<br class=""><div class=""><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Dec 25, 2014, at 12:49 PM, Craig Smith <<a href="mailto:craigallynsmith@gmail.com" class="">craigallynsmith@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><p class="MsoNormal">Season’s Greetings TC-LUG’ers,</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">I run a DIY network of security cameras that work in two
parts.</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">FTP (or server pull)</p><p class="MsoNormal">A number of cameras send jpeg images to server several times
a minute.</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">FFMPEG<br class="">
Once a day, read last 24hrs of jpegs and write out the mp4 video.</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">Calculating the mp4 files takes most of the time, preventing
higher frames-rates, increasing sever load (impacting other uses) and delaying
availability of the final video.</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">QUESTION</p><p class="MsoNormal">Since this is disk-intensive, I trust performance would improve
if Jpegs were written-to and read-from solid-state drive (SSD) as opposed to
traditional spinning mechanical-platter hard disk (HD).<span style="" class=""> </span>I plan to continue writing the final MP4 to
HD.<span style="" class=""> </span>Looking at RAID for faster reads serving
the final product.</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">I understand SSD are faster, quieter, more reliable, and
uses less power than HD (compelling arguments) but have a limited number of
read-write cycles before failure and are prone to fail on power outages.</p><p class="MsoNormal"><a href="http://en.wikipedia.org/wiki/Solid-state_drive#Comparison_with_other_technologies" class="">http://en.wikipedia.org/wiki/Solid-state_drive#Comparison_with_other_technologies</a></p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">If I run 5GB per day through a 120GB SSD what’s the expected
MTBF?</p><div class=""> <br class="webkit-block-placeholder"></div><p class="MsoNormal">Otherwise, more ram and a faster cpu should help.<span style="" class=""> </span>Any system design, hardware, or architecture
tips?</p><p class="MsoNormal"> <br clear="all" class=""></p><br class="">-- <br class=""><div class="gmail_signature">Craig A. Smith mailto:<a href="mailto:craigallynsmith@gmail.com" class="">craigallynsmith@gmail.com</a><br class=""><br class=""></div>
</div>
_______________________________________________<br class="">TCLUG Mailing List - Minneapolis/St. Paul, Minnesota<br class=""><a href="mailto:tclug-list@mn-linux.org" class="">tclug-list@mn-linux.org</a><br class="">http://mailman.mn-linux.org/mailman/listinfo/tclug-list<br class=""></div></blockquote></div><br class=""></div></div></div></div></body></html>