CMS专题
单选题A customer is experiencing a performance bottleneck in a disk subsystem. The server is performing sequential I/O with a small number of users requesting large files. Which of the following would most likely resolve the bottleneck？（）A Increase seek tr
题目
Increase seek translation
Increase data transfer rate
Decrease rotational latency
Increase rotational latency
参考答案和解析
相似问题和答案
第1题：
Customer service is the performance of activities to ( )
A. control costs of production
B.expand company' s business
C. ensure customer satisfaction
第2题：
A customer has an EMC Symmetrix DMX3000 that is at the end of lease. The environment consists of IBM System p， IBM System i， and IBM System z. The customer is evaluating EMC， HDS， and IBM storage as possible replacements. They are interested in comparing the performance of all three disk subsystems. Which tool compares performance（）
- A、Capacity Magic
- B、eConfig
- C、TPC for Disk
- D、Disk Magic
正确答案:D
第3题：
The most common definition of project success is:
A.Within time
B.Within time and cost
C.Within time, cost and technical performance requirements
D.Within time, cost, performance and accepted by the customer/user
E.None of the above
第4题：
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.
正确答案:A
第5题：
Which three business requirements development activities are performed in the prepare phase before creating a technology strategy？ （）
- A、 identifying and assessing customer business requirements
- B、 documenting and categorizing customer business requirements in terms of performance， availability， capacity and security
- C、 producing a documented technology strategy
- D、 creating a bill of materials
- E、 presenting documented business requirements to a customer and having the customer validate them
- F、 completing a site survey
正确答案:A,B,E
第6题：
A customer has installed an IBM System Storage DS8700 with 20 TB of storage, 32 GB cache, and 16 Fibre Channel ports. The customer is beginning to experience throughput performance issues since they have added new workloads. The customer asks the storage specialist for guidance.Which of the following actions should be recommended as a first step?（）
A. install the Performance Accelerator feature
B. review the DS Storage Manager Major Event Log (MEL)
C. add an expansion frame with additionalFibre Channel ports
D. review the latest TPC for Disk study to identify the source of the performance issue
第7题：
Which of the following commands should be used to monitor disk utilization during the time a system is experiencing a disk I/O performance problem？（）
- A、 istat
- B、 topas
- C、 vmstat
- D、 filemon
正确答案:B
第8题：
● The most common definition of project success is:
A Within time
B Within time and cost
C Within time, cost and technical performance requirements
D Within time, cost, performance and accepted by the customer/user
E None of the above
第9题：
A server is experiencing performance issues and the SAN could be a potential bottleneck. Which command will show the queue depth of hdisk1?（）
- A、lspv hdisk1
- B、lscfg hdisk1lscfg ? hdisk1
- C、lsdev c hdisk1lsdev ?c hdisk1
- D、lsattr l hdisk1lsattr ?l hdisk1
正确答案:D
第10题：
A customer has installed an IBM System Storage DS8700 with 20 TB of storage, 32 GB cache, and 16 Fibre Channel ports. The customer is beginning to experience throughput performance issues since they have added new workloads. The customer asks the storage specialist for guidance. Which of the following actions should be recommended as a first step?（）
- A、install the Performance Accelerator feature
- B、review the DS Storage Manager Major Event Log (MEL)
- C、add an expansion frame with additionalFibre Channel ports
- D、review the latest TPC for Disk study to identify the source of the performance issue
正确答案:D