单项选择题

A new Disaster Recovery site has been established using Metro Mirror to hold synchronous data at both sites. After the Metro Mirror is started， one of the most important applications， a DB2 database， slows down. An analysis shows that the I/O rate （especially write I/Os） is less than 40% compared to the former rates.
What is the best explanation for this behavior（）

A.the bandwidth of the PPRC connection between the two sites is too small
B.the DS8000 SFI at the remote site was shipped with slower disks
C.I/O rates vary， depending on the distance between the two sites and the rates cannot be changed easily， due to latency
D.the DB2 database does not work with Metro Mirror without an additional license

<上一题目录下一题>

热门试题

单项选择题An IBM Business Partner sells an IBM System Storage DS8700 to a customer. Who is responsible for the installation and set up of the storage server（）

A.purchasing customer
B.IBM Installation Readiness Team
C.IBM Customer Engineer
D.IBM Business Partner

单项选择题A customer’s SAN environment has undergone significant growth over the past two years. They have also suffered a high turnover rate with administrative personnel. The customer has asked a storage specialist for help in documenting and understanding their changing SAN environment. The ability to make configuration changes to devices would be a plus. Which tool should the storage specialist suggest（）

A.Tivoli Storage Productivity Center Fabric Manager
B.Tivoli Storage Productivity Center Basic Edition
C.IBM TivoliNetView
D.Disk Magic

单项选择题The Business Partner technical specialist is called to determine if the addition of host ports on an IBM System Storage DS8700 has improved users’ response times for an IBM System p server running SAP. How can the improvement be verified（）

A.check the output of the "vmstat" command on LINUX
B.check the performance reports via Tivoli Storage Productivity Center for Data
C.check the performance reports via Tivoli Storage Productivity Center for Disk
D.check the output of the "iostat" command on AIX

单项选择题A customer with a single IBM System Storage DS8100 reports severe performance problems for some of their applications when a particular data warehousing application creates a heavy load. What is the most cost effective way to resolve this issue（）

A.add additional disks to the DS8100
B.add more cache to the DS8100
C.move affected volumes to a different disk enclosure
D.implement TPC for Disk to monitor performance

单项选择题A customer recently installed new a SAN with an IBM System Storage DS8700 and several open systems servers to address a need for storage consolidation and still provide good response time. They have asked the Business Partner technical representative for the most complete IBM product that would allow them to do performance reporting of the new SAN environment. What is the best solution（）

A.Tivoli Storage Manager
B.Tivoli Storage Productivity Center for Disk
C.Tivoli Storage Productivity Center Basic Edition
D.Tivoli Storage Productivity Center Standard Edition