A customer has installed an IBM System Storage DS8700 with 20 TB of storage， two-way processor version， 32 GB cache， and 16 Fibre Channel ports. The customer is beginning to experience throughput performance issues. 
To address this performance consideration with minimal cost to the customer， which of the following should be the FIRST step to resolve the problem（）

单项选择题The storage specialist needs to prepare an IBM System Storage DS8800 proposal including 64 host ports. The offer needs to meet the lowest possible price.  What is the minimum number of I O Enclosure Pairs PCI-E for this configuration（）

A.one I/O enclosure pair PCI-E
B.two I/O enclosure pairs PCI-E
C.four I/O-enclosure pairs PCI-E
D.eight I/O-enclosure pairs PCI-E

单项选择题A healthcare provider has two applications that they need to redundantly protect in a SAN environment. Their patient record application runs on Oracle 11i and consists of many small， randomly accessed files. The database is kept on three clustered Sun servers and currently uses 30 TB of data space. Their imaging application that retains and manages x-rays， consists of Filenet， CommonStore， and TSM running on an IBM Power750 server， and is currently using 65 TB of data space.  Which of the following disk solutions meets the customer’s requirement（）

A.IBM System Storage DS8700 2 way
B.IBM System Storage DCS9900
C.IBM System Storage DS8700 4 way
D.IBM XIV Storage System

单项选择题A customer has an IBM System Storage DS8700 at their primary site and an XIV system at their recovery site， which is 9.5 kilometers away. They want to replicate data for disaster recovery backup.  Which factor is a primary consideration when proposing a solution for this customer（）

A.compatibility of copy functions
B.difference in capacities in the two systems
C.cache size discrepancies between the two systems
D.the necessity of using two storage management products

单项选择题TooptimizeperformanceonanIBMSystemStorageDS8000，theinput outputactivityshouldbespreadacross（）

A.multiple LUNs in a single array
B.multiple switches
C.multiple host bus adapters
D.multiple internal servers

单项选择题A customer has two data centers， 500 kilometers apart. The customer requests a proposal for new storage subsystems and a disaster recovery solution that provides consistent data in the event of a disaster at the local site.  Which IBM System Storage DS8000 solution should the storage  specialist propose to the client（）

A.Metro/Global Mirror
B.Metro Mirror
C.Global Copy
D.Global Mirror