A.The ability to interleave writes to the arrayB.High A……

单项选择题Acompanyinstalledanewservertomanageitselectronicimagestorage.Theyhavetwodistinctimagesizes：2KBand16KB.TwodistinctarraysarecreatedonaServeRAIDadapter.Thefirstarraywillstoreallofthe2KBimages，andthesecondarraywillstoreallthe16KBimages.TheRAIDstripesizewasleftatthedefaultsizeof8KB.Afterinstallation，aperformanceproblemisidentified.Accordingtoperformancemonitoring，80%oftheimagesare16KB.Whichofthefollowingwillbestoptimizeperformance？（）

A.Change the stripe size on the RAID controller
B.Change the stripe size to 1024K on the RAID controller
C.Change the stripe size on the RAID controller for the first array
D.Change the stripe size on the RAID controller for the second array

单项选择题Acustomerhastheneedtoimplementatapebackupsolutiontobackupa500GBdatabaseonadailybasis.Whichofthefollowingfactorsisthemostimportantconsiderationinthedesignofabackupandrestoresolution？（）

A.Amount of data in the backup
B.Bandwidth available to the tape device
C.Length of the backup/restore window
D.Speed that the backup system can find files for restoration

单项选择题A customer wants to hold all enterprise data on their DS4000 system.  Several servers were added after they purchased another company.  The servers that have to be run are：       （1）An Oracle database running on a HP-UX server   （2）Several virtual machines running on VMWare ESX server       （3）A Microsoft cluster running Exchange 2000 server   Which of these new servers can be integrated with the DS4000？（）

A.DS4000 storage does not support HP-UX， so the HP-UX server cannot be integrated.All other new servers can be used.
B.An Exchange cluster needs local disks， so the DS4000 cannot be used for this.All other new servers can be used.
C.When equipped with proper HBA’s and subsystem device drivers， all new servers can operate with the DS4000 storage device.
D.VMWare ESX can use the DS4000 storage； however， the virtual machines running in it will not have access to this storage other than via a virtual disk.All other new servers can be used.

单项选择题Acustomerisbuildingadatabaseserver，andtheserverdoessequentialwritemostofthetime.TheyareplanningtouseanIBMx445andaServeRAID-6Madapter.WhichofthefollowingfaulttolerantRAIDlevelswillperformbestforsequentialwrite？（）

A.RAID-5 with cache write back
B.RAID-1E with cache write back
C.RAID-10 with cache write thru
D.RAID-50 with cache write thru

单项选择题The statistics for a poorly performing， dual-processor x365 system are as follows：     （1）Processor： 80% for 5-second increments   （2）Memory page faults： 360 second average over 15 minutes       （3）Disk % disk time： 100%   Which of the following will provide the greatest performance improvement？（）

A.Add memory
B.Add a processor
C.Exchange the existing processor for a faster processor
D.Add a faster disk subsystem