单项选择题

A customer wants to create backups at a remotely located datacenter. Price and performance are of primary importance， so backup to disks at the remote location is selected instead of tape. The remote location is 1 KM （0.6 Miles） away from the data center. NAS is the solution being considered. Which of the following is the benefit of this solution？（）

A.NAS runs on 2Gb fibre， which will provide better performance.
B.NAS uses WAN infrastructure， which can easily span the 1 KM gap.
C.NAS requires fibre storage， which allows dual paths for redundancy.
D.NAS requires iSCSI routers and offers better growth environment.

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热门试题

单项选择题AttachingtoaSCSIstoragesystemthroughredundantpathswillprovidewhichofthefollowing？（）

A.The ability to interleave writes to the array
B.High Availability and failover
C.LUN sharing via Target Mode SCSI on the storage system
D.A greater number of LUNS available on the same storage system

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