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IBM C4090-456 Exam Syllabus Topics:

IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. How does IBM XIV SSD technology provide longer life over competitors' use of SSD technology?

A) hybrid algorithms combine features of SSDswith existing HDDsin the same unit
B) patented wear-leveling algorithm designed for SSD longevity
C) IBM SSDs are filled with write blocks of 1024kb in random I/O operations
D) common off-the-shelf components minimize the use of SSDs for write environments

2. A customer has purchased a six module XIV Gen3 for a new project, which is located in a new data center. A new requirement states that a portion of the project data must be replicated to an existing six module XIV (Gen2) at the customer's primary data center, 500 km away. The target XIV has sufficient capacity but no Fibre Channel connectivity exists between sites. The customer therefore decides to use iSCSI replication.
Which upgrade is required to meet the requirements?

A) add modules to the new (primary) XIV Gen3
B) add modules to the existing (secondary) XIV
C) add modules to both XIV systems
D) replace the new (primary) XIV Gen3 InfiniBand switches with Ethernet switches

3. PowerVM is a requirement for XIV host attach to which of the following operating systems?

A) LinuxonSystemz
B) VMware
C) AIX
D) IBMi

4. On XIV what factors are important to successfully implement asynchronous mirroring?

A) latency between the remote and local XIV, number of volumes must be less than 256
B) data change rate, available bandwidth and interval
C) each mirror must have the same RPO and sync interval within the same storage pool
D) data change rate, number of volumes less than 256, required RPO

5. XIV Quality of Service limits I/O to which of the following?

A) storage pools
B) hosts
C) mirrored pairs
D) consistency groups

Solutions: