Intel RAID Performance 12Gb/s SAS RAID Controllers

Intel®RAIDPerformance12Gb/sSASRAIDControllersWhitePaper
Figure4IntelIntegratedRAIDModuleRMS3CC08012Gb/sSASSSD,TransactionalWorkloads
 TheIntel12Gb/sSASRAIDcontrollerexhibitsincrediblyhighperformance,easilyachievingmorethan
 500,0008-KBrandomreads-nearly4,000MBps.Thistranslatestomorethan100,000database 
 operationsforatypicalRAID10conguration,andevenamorecapacity-optimizedRAID5conguration
 canstillachieveupwardsof70,000databasetypeIOPs.
2.3 Common Enterprise Applications
Workstation workloads represent primarily single tenancy operating systems running multiple
 applicationsthatpredominatelyhandlerandomreadrequests,withamixofsequentialreadsandwrites.
 Lowresponsetimesandeectivecachingstrategiesareessentialforworkstationusers.
 Webserverworkloadstypicallyservicemultiple,primarilyrandomsimultaneousrequests.Text,images,
 video,andaudioarecommonlyfeaturedlesservedbywebservers,withahighskewtowardsthemost
popular web pages. Low response times are critical to support fast page loads and ensure customer
satisfaction.
Operating system drive workloads represent the I/O activity of an operating system drive. This workload
 isdenedasapseudorandom70:30mixofreadsandwritescombinedwithsmallsequentialI/Osthat
 simulatelogging.Operatingsystemsmustmanagesystemcache,metadataandapplicationcodeand
 eectivecachingoffrequentlyaccesseddata,whilemaintainingdataintegrity.Theabilitytohandle 
 numerousoutstandingrequestsisabsolutelyessential.Withtheextensiveuseofvirtualization 
 anddistributedletechnologies,optimalOSperformanceismoreimportantthanever.
 Fileserverworkloadsarecharacterizedbyalargenumberofusersrequestingaccesstostructured 
 referencedataandles.Whilelesystemsandaccesspatternscanvarysignicantly,wemeasure80:20
 randomreadandwriteworkloadwiththemajorityofrequestsizesranging,bimodallybalanced,around4
 KBand64KB.
Email server workloads typically service multiple simultaneous requests to transport or store email. Many
email servers use databases or database-like structures to manage and store user data. Because of the
 variationsinemailserverapplications,twocommontypesofemailserversweresimulatedintesting:
 1.8KB50%mixofrandomreadsandwrites
 2.32KB65%mixofrandomreadsandwrites
 Thefollowingguresshowthecommonenterpriseapplicationperformancetestingresultsat6Gb/sSAS
 and12Gb/sSAS.