单选题A customer is building a database server， and the server does sequential write most of the time.  They are planning to use an IBM x445 and a ServeRAID-6M adapter.  Which of the following fault tolerant RAID levels will perform best for sequential write

第1题：

A customer is building a database server， and the server does sequential write most of the time.  They are planning to use an IBM x445 and a ServeRAID-6M adapter.  Which of the following fault tolerant RAID levels will perform best for sequential write？（）

• A、RAID-5 with cache write back
• B、RAID-1E with cache write back
• C、RAID-10 with cache write thru
• D、RAID-50 with cache write thru

第2题：

A server has six drives of equal size attached to a RAID controller. Which of the following fault tolerant RAID levels would allow the maximum amount of data to be stored?（）

• A、RAID 1 +0
• B、RAID 5
• C、RAID 0
• D、RAID 1

第3题：

A customer has an xSeries x445 server attached to a DS4500 storage server containing two EXP710 disk expansion drawers with 14 disks in each.  The x445 is to be used for a video streaming application.  The customer wants to make the most cost-effective use of the disk capacity while retaining fault tolerance.  Which of the following solutions will satisfy the requirements？（）

• A、Create two RAID-10e arrays， one per disk expansion drawer
• B、Create a single RAID-10 array across the two disk expansion drawers
• C、Create a single RAID-5 array across both disk drawers utilizing all disks
• D、Create four RAID-5 arrays in 6+P format with two arrays to each disk expansion drawer

第4题：

A customer is installing a new x3850 X5 server and has purchased a warranty upgrade on the server to 24 x 7 four hour response. The customer requested IBM help with setting up the RAID adapter. The customer was told IBM would not help them. Which of the following should be verified first？（）

• A、The customer used their IBM Customer Number
• B、The customer has activated their base warranty
• C、The customer purchased Remote Technical Support Servicepac
• D、The customer escalated the issue to the Duty Manager

第5题：

A customer wants to implement a clustered database solution on their existing x445 servers.  A minimum of four nodes must participate in the cluster， and the customer wishes to use open standards.  Which of the following best satisfies their requirements？（）

• A、Novell NetWare Cluster Services
• B、Red Hat Enterprise Linux Cluster Suite
• C、Microsoft Windows 2003 Server with MSCS
• D、Microsoft Windows 2003 Enterprise Edition

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A new storage array must be configured for a database server. This array will store transaction logs that are always being written.  Which of the following RAID solutions would provide fault tolerance and fast write operations without the use of parity？ （）

• A、 RAID 0
• B、 RAID 3
• C、 RAID 6
• D、 RAID 10

第14题：

A customer has a file server with RAID-5 using 8KB random I/Os， with 67% reads and 33% writes.  How should the disk controller cache be configured for optimal performance？（）

• A、Use write-back cache
• B、Use write-back cache with battery backup
• C、Use write-through cache with disk caching enabled
• D、Use write-through cache with disk caching disabled

第15题：

A customer has a file server using RAID-5 with 8KB sequential write operations.  How should the disk controller cache be configured for optimal performance and data integrity？（）

• A、Use write-back cache with battery backup enabled
• B、Use write-through cache with battery backup enabled
• C、Use read-back cache with battery backup enabled
• D、Use read-through cache with battery backup enabled

第16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 

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