单项选择题

A.Yes， the internal LSI SCSI adapter has no write cache……

A customer has an x445 and uses the internal LSI adapter to manage two 146GB drives in the chassis. The customer is noticing performance issues when deploying a database with significant write activity on the internal drives. Should they consider using a ServeRAID-6M with 256MB of cache instead， and why or why not？（）

A.Yes， the internal LSI SCSI adapter has no write cache.
B.Yes， the internal LSI SCSI adapter is unreliable.
C.No， the downtime to install the card and reformat the drives would be cost prohibitive.
D.No， there will be no performance benefit， because drive performance is the bottleneck.

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热门试题

单项选择题A specialist is monitoring performance on a server. The data is on another partition within the same array as the OS. The following information is available：（1）The average record written to disk is 16KB （2）The I O block size is 2KB （3）The stripe size on the RAID array is 16KB Which of the following will improve performance without rebuilding the operating system？（）

A.Change the I/O block size to match the RAID Stripe size.
B.Change the RAID stripe size to match the I/O block size.
C.Change the record size of the database to match the RAID stripe size.
D.Change the record size of the database to match the I/O transfer rate.

单项选择题AcustomerhasasmallSANwithbothLinuxandWindowsserversattachedtoaDS4300storageserverthrougharedundantfabric.Whichofthefollowingisthemostimportantconsiderationtoensurethatthisconfigurationwouldfunctionproperly？（）

A.The utilization of interswitch links between the redundant switches
B.The enablement of the multi-OS Storage Partitioning feature on the DS4300
C.Selection of 50u multi-mode Fibre to ensure 2Gb operation
D.The RAID level of the array on the DS4300 storage server

单项选择题AcustomerhasanxSeriesx445serverattachedtoaDS4500storageservercontainingtwoEXP710diskexpansiondrawerswith14disksineach.Thex445istobeusedforavideostreamingapplication.Thecustomerwantstomakethemostcost-effectiveuseofthediskcapacitywhileretainingfaulttolerance.Whichofthefollowingsolutionswillsatisfytherequirements？（）

A.Create two RAID-10e arrays， one per disk expansion drawer
B.Create a single RAID-10 array across the two disk expansion drawers
C.Create a single RAID-5 array across both disk drawers utilizing all disks
D.Create four RAID-5 arrays in 6+P format with two arrays to each disk expansion drawer

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