All of the following RAID levels are available on an IBM System Storage DS8700 and DS8800 with the exception of:（）

单项选择题Which of the following is a benefit of the IBM Long Term File System (LTFS)? （）

A. management of the library files
B. management of the encryption keys and archives
C. helps to reduce tape, file management and archive costs
D. helps to control the write speed matching on LTO-4 drives

单项选择题On both the IBM SAN764B and the IBM SAN384B Fiber Channel Directors, all of the followingSmall Form Pluggable plus (SFP+) optical transceivers are supported EXCEPT:（）

A. 1Gbps+
B. 2Gbps+
C. 4Gbps+
D. 8Gbps+

单项选择题A customer is currently using EMC disk. They are having an issue with the time it takes to complete a backup. What IBM tool can be used to show how much improvement can occur in the time it takes to backup the disk?（）

A. TCOnow!
B. Disk Magic
C. Batch Magic
D. Capacity Magic

单项选择题The IBM XIV Storage System supports all of the following fiber channel speeds EXCEPT:（）.

A. 1Gbps
B. 2Gbps
C. 4Gbps
D. 8Gbps

单项选择题Which IBM storage product is offering Easy Tier technology?（）

A. XIV
B. SONAS
C. DS8700
D. ProtecTIER 7650