单项选择题

A global customer’s IT strategy is based upon two DS800……

A global customer’s IT strategy is based upon two DS8000 systems and an N series gateway. They want to protect their
business by implementing a disaster recovery solution. The storage specialist has recommended cascaded mirroring.
Which of the following is the business benefit of cascaded replication（）

A.it is cost efficient， as a single N series or DS8000 can have its controllers split between the primary and secondary site and use semi- synchronousmirroring while using asynchronous mirroring to a third site
B.the second site acts as a repeater station so that greater geographical distances can be achieved
C.ITprovides high availability together with disaster recovery by implementing Metro/Global Mirror across three geographically dispersed systems
D.it guarantees data protection by implementing two synchronous copies of the primary site data

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热门试题

单项选择题A company has a 30 TB multi-vendor storage environment attached to System i and open systems. They are concerned about the time and effort caused by frequent migrations to new storage hardware for open systems data. In addition to consolidating their storage to a single platform， they would like to take advantage of advanced features such as Easy Tier and implement a three-site business continuity strategy. Which product provides the best long-term solution for this company（）

A.IBM System Storage DS8000
B.IBM XIV Storage System
C.IBM System Storage N series
D.IBMStorwize V7000

单项选择题A customer wants to purchase an IBM System Storage DS8700 to support a high-performance database environment. Which technical solution gives the customer the best relationship between I O performance at the machine’s backend vs. capacity installed in the machine（）

A.additional installation of the first and second expansion frame will increase the backend performance capability
B.the usage of 300 GB/15k FC disks will give the server a high-performance backend capability
C.performance Accelerator restricts the number of disks connected to one device adapter pair to 32 disks
D.the second RIO-G loop between the base frame and the first expansion increases the backend performance

单项选择题WhatisakeydifferentiatorbetweenaDS8700andDS8800foracustomerlookingforahighcapacitysolutionatthelowestcost（）

A.DS8700 supports SATA drives
B.DS8800 supports more physical drives
C.DS8700 supports 2.5" disk drives
D.DS8800 supports 4Gbps FC drives

单项选择题DuringtheTDA，itisdeterminedthatGlobalMirrorwillbeimplemented.TheIBMteamwantstoensurethattheyhaveenoughDS8800fiberlinkstohandlethemirroringworkload. Which toolshouldbeusedtodeterminethenumberoffiberlinksneeded（）

A.RMF Magic
B.Capacity Magic
C.Disk Magic
D.PerfMon

单项选择题A customer has bought an IBM System Storage DS8700 and wants to attach ten SuSE Linux Enterprise Server hosts to the DS8700 with multiple paths. What is the Multipathing Driver the customer needs（）

A.PowerPath
B.Subsystem Device Driver Device Specific Module
C.Subsystem Device Driver Path Control Module
D.DeviceMapper Multipath