单项选择题
A customer is building a database server， and the server does sequential write most of the time. They are planning to use an IBM x445 and a ServeRAID-6M adapter. Which of the following fault tolerant RAID levels will perform best for sequential write？（）
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
相关考题
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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 -
单项选择题
WhichofthefollowingisthebenefitofinstallingtwoexpandabilitycablestoanRXE-100fromanx445？（）
A.Higher availability of the enclosure
B.Access to both channels of the RXE-100
C.Support for more PCI-X 133MHz I/O cards
D.Improved management of the Drawer Management Controller in the RXE-100 -
单项选择题
Anx445withtwo3.0GHzDPprocessorsand2GBofRAMisrunningaprocessor-intensivefloating-pointgeologicalapplicationthatcalculatespressuresintheearth’scrust.Ittakesalongtimeforeachcalculation，andthedirectorofcomputingwantsthecalculationstotakelesstime.Memoryaddressedbytheapplicationmayalsobeabottleneck.Whichofthefollowingwillmostimprovetheabilitytorunthecalculationsinlesstime？（）
A.Replace the two 3.0 GHz DP processors with four 3.0GHz MP processors with a 4MB L3 cache and 4GB of RAM
B.Replace the x445 with an x366 with four 3.66 EM64T processors with a 1MB L2 cache and 4GB of RAM
C.Replace the two 3.0GHz DP processors with two 3.0GHz MP processors with a 4MB L3 cache and 2GB RAM
D.Replace the two 3.0GHz DP processors with four 3.0 GHz DP processors with a 512KB L2 cache and 4GB RAM
