IBM C4090-456 Exam : IBM XIV Storage System Technical Solutions V4

  • Exam Code: C4090-456
  • Exam Name: IBM XIV Storage System Technical Solutions V4
  • Updated: Jun 11, 2026
  • Q & A: 70 Questions and Answers

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IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. Which of the following is a benefit of the XIV system's storage allocation methodology?

A) storage pools are always allocated on separate physical disks
B) one MB partitions ensure efficient cache utilization
C) all workloads are distributed throughout the system
D) parityis protecting data across all modules


2. Which of the following statements is true of the XIV architecture?

A) Storage Pools are used to group volumes with similar performance requirements.
B) Every logical volume is spread over every physical drive.
C) In a fifteen module XIV, fifteen physical disks are allocated as hot spares.
D) For each mirrored 1 MB partition, one copy is always on an interface module.


3. A customer wants to know how much capacity has been consumed against the Capacity on Demand entitlement on their XIV system.
How would the technical specialist determine the capacity consumed?

A) running the XCLI command cod_list
B) running the XCLI command vol_list and summing the Used Capacity column
C) looking at the soft consumed capacity in the bottom left corner of the XIV GUI
D) running the XCLI command system_capacity_list


4. During data migration from a legacy storage system to the XIV system, there are eight hosts accessing eight separate volumes.
What is the maximum number of volume migrations allowed in the background while the eight hosts are actively running?

A) 8perdefinedtarget
B) 2perdefinedtarget
C) 1per defined target
D) 4perdefinedtarget


5. A customer wants to ensure resource availability for their SAP application by implementing Q0S. How could the performance class be defined?

A) limited to 10,000 IOPS and add all hosts except the SAP application to it
B) for half of the interface modules add all hosts, with the remaining modules serving the SAP application
C) limited to 10,000 IOPS and add the SAP application servers to it
D) for half of the interface modules add the SAP application, with the remaining modules serving all other I/O


Solutions:

Question # 1
Answer: C
Question # 2
Answer: B
Question # 3
Answer: A
Question # 4
Answer: C
Question # 5
Answer: A

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