單項選擇題

When designing an expansion within the same data center, when is a pre-sales TDA absolutely required by IBM?（）

A. for a SAN768B Director
B. for a second TS3500 Tape Library
C. for a second EXP5060 Expansion Unit
D. for an additional DS8300 Expansion Frame

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單項選擇題

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

A.RAID 1
B.RAID 5
C.RAID 6
D.RAID 10

單項選擇題

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