Intel RAID Performance 12Gb/s SAS RAID Controllers

Intel®RAIDPerformance12Gb/sSASRAIDControllersWhitePaper
Figure 1 Intel Integrated RAID Module RMS3CC080 Large Streaming Reads and Writes
Streaming workloads represent contiguous requests made to the disk. The workloads are predominately
 sequentialI/O.Applicationssuchasdatawarehousing,ETL,andVTLbackupoperationsexperiencethis
 typeofworkloadforreads.Applicationssuchasmediacapture(videosurveillance,medicalimaging, 
 andsoon),archival,andbackupexperiencethistypeofworkloadforwrites.Highbandwidthiscrucialfor
these applications.
Multithreaded Workloads
 Formultithreadedreadandwriteworkloads,highbandwidthandtheabilitytoidentifyandoptimally 
 managemultiplethreadsarecrucialfortheseapplications.Intel12Gb/sSASRAIDcontrollerscanidentify
 multiplethreadsandoptimizethecommandstoreducemissedrotationsandminimizediskseeks.
 Multithreadedworkloads,whilesimilartostreamingworkloads,varyinthattherearemultiple 
simultaneous threads that typically do not overlap. This workload is mimicked by launching 1 through
 24threadsat64KB(orlarger)separatedby2GBranges,asshowninthefollowinggure.Applications
 suchasmediaservers(video-on-demand),cloudcontentdelivery,HadoopMapReduce,andHDFS 
 experiencethistypeofworkloadforreads.BigdataapplicationssuchasHadoopsourceingest(Sqoopor
 Flume)andmediaoperations(videosurveillance)experiencethistypeofworkloadforwrites.