单选题A customer is experiencing a performance bottleneck.  The server is performing sequential I/O requests with large block sizes of 64KB.  Improving which of the following storage subsystem characteristics has the biggest impact on this bottleneck？（）A See

第1题：

A customer server has the maximum local storage installed. The customer plans to share this new storage with other servers. Which of the following provides that server additional storage？（）

• A、Add External Storage via EXP3000
• B、Replace current storage with more dense drives
• C、Add External Storage via SAN
• D、Add storage expansion blade

第2题：

A 4-way x445 server with 2GB of memory running Windows 2003 Server with Exchange 2003 is performing poorly.  Users are complaining of slow response times when accessing their email.  Which subsystem should be checked first as a potential bottleneck？（）

• A、Processors
• B、Memory subsystem
• C、Storage subsystem
• D、Network connectivity

第3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 translation
• B、Increase data transfer rate
• C、Decrease rotational latency
• D、Increase rotational latency

第4题：

In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）

• A、 tprof
• B、 iostat
• C、 svmon
• D、 filemon

第5题：

Which of the following environments is most closely addressed by the N series N3600?（）

• A、a customer that requires block level storage 
• B、a customer that requires CIFS and AIX NFS environments 
• C、a customer that requires good scalability and performance 
• D、a customer that needs to consolidate multiple storage controllers under a single interface

第6题：

An  administrator  has  a  server  experiencing  performance  problems  with  logical  volumes  within  a particular volume group.  Which command can report I/O statistics for logical partitions with each logicalvolume within the volume group（）

• A、Islv
• B、vmstat
• C、iostat
• D、Ivmstat

第7题：

A customer has requested an initial proposal for two x346s to be used as file servers.  They feel that using a direct attached DS4300 with ten 146GB drives will be more than sufficient storage space.  They do not currently own any IBM equipment.  An answer to which of the following questions would be of greatest benefit when looking to enhance the offering at minimal expense and ensure a good end user experience？（）

• A、Has a SATA drive expansion enclosure been considered for the DS4300？
• B、Is there a concern for overall disk subsystem I/O performance？
• C、Has an IBM Director Server been considered to monitor the environment？
• D、What will their storage requirements be over the next 12 months？

第8题：

A company needs additional storage for a block I/O based database application. The application has low I/O bandwidth requirements across the campus. The customer has a TCP/IP infrastructure and is interested in low-cost products that are compatible with its environment. Which technology is most appropriate for this customer?（）

• A、SAN
• B、FCoE
• C、FCIP
• D、iSCSI

第9题：

Which of the following customer environments is addressed by IBM System Storage N series gateways?（）

• A、 a customer with CIFS, NFS and GPFS requirements 
• B、 a customer wanting to natively implement Easy Tier 
• C、 a customer who has large block sequential write requirements 
• D、 a customer who needs to consolidate multiple storage controllers under one managementinterface 

第10题：

Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）

• A、 filemon
• B、 istat
• C、 vmstat
• D、 iostat