A customer has an xSeries x445 server attached to a DS4500 storage server containing two EXP710 disk expansion drawers with 14 disks in each.  The x445 is to be used for a video streaming application.  The customer wants to make the most cost-effective use of the disk capacity while retaining fault tolerance.  Which of the following solutions will satisfy the requirements？（）

单项选择题AcustomerhasafileserverwithRAID-5using8KBrandomI Os，with67%readsand33%writes.Howshouldthediskcontrollercachebeconfiguredforoptimalperformance？（）

A.Use write-back cache
B.Use write-back cache with battery backup
C.Use write-through cache with disk caching enabled
D.Use write-through cache with disk caching disabled

单项选择题Acustomerisexperiencingaperformancebottleneckinadisksubsystem.TheserverisperformingsequentialI Owithasmallnumberofusersrequestinglargefiles.Whichofthefollowingwouldmostlikelyresolvethebottleneck？（）

A.Increase seek translation
B.Increase data transfer rate
C.Decrease rotational latency
D.Increase rotational latency

单项选择题Acustomerneedstheabilitytorecovertheirdataifatotalsystemfailureoccurs.Whichtwoofthefollowingarethemostimportantconsiderationsindeterminingthesolution？（）

A.Network utilization
B.Total amount of storage installed
C.Amount of open files in the backup
D.Amount of critical data in the backup or restore

单项选择题Acustomerisrunninganapplicationwithlargeblockfilesthatcontainimagesandvideofiles.Theyhavearequirementforalowcoststoragesolution.TheconsultantrecommendedconsideringtheNASsolution.WhichofthefollowingbenefitswilltheNASsolutionprovide？（）

A.Utilizes existing infrastructure
B.Provides direct host attached solution
C.NAS storage will use the reliable iSCSI protocol
D.Long distances after upgrading all host connections to fibre

单项选择题AttachingtoaNASstoragesystemthroughredundantNICswillprovidewhichofthefollowing？（）

A.High availability and failover
B.File sharing on the storage system
C.Better bandwidth through NIC Teaming on attached servers
D.Greater number of LUNS available on the same storage system