IBM C4090-456 Actual Free Exam Questions & Community Discussion

Exam Code/Number: C4090-456
Exam Name/Title: IBM XIV Storage System Technical Solutions V4
Certification Provider: IBM
Corresponding Certification: IBM Certified Specialist

Exam Questions: 70
Updated On: May 28, 2026

Question #8

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. 4perdefinedtarget

C. 1per defined target

D. 2perdefinedtarget

Discussion 0

Correct Answer: C Vote an answer

Question #9

On an XIV system, what factor must be considered when using snapshots?

A. snapshots cannot be moved independently to another storage pool

B. snapshots must be unlocked before restore

C. restoring a snapshot invalidates all earlier snapshots

D. 17 GB of hard capacity is immediately consumed at creation per snapshot

Discussion 0

Correct Answer: A Vote an answer

Question #10

Which XIV system feature increases the level of reliability of the system?

A. Quality of Service

B. solid state drives

C. snapshots

D. protected cache

Discussion 0

Correct Answer: D Vote an answer

Question #11

How does the XIV system protect data arriving from hosts?

A. all data is written to cache in two modules and then acknowledged to the host

B. each module internally mirrors its cache to a special segment of memory

C. MPIO distributes a single I/O down multiple paths to different XIV modules

D. data is written to a single module before acknowledgement to the host

Discussion 0

Correct Answer: A Vote an answer

Question #12

A customer has legacy Windows 2003 servers to connect to an XIV. What software is required to be installed on the host?

A. XIV HAK

B. XIV GUI

C. XIV Top

D. XIV VSS

Discussion 0

Correct Answer: A Vote an answer

Question #13

Which statement is true about the XIV migration?

A. The customer must also purchase a SAN Volume Controller.

B. Data can be migrated without any host interruption.

C. Before commencing migration the optional license must be installed.

D. The customer must be aware that a short period of host downtime is needed.

Discussion 0

Correct Answer: D Vote an answer

Question #14

Which of the following occurs in the event of an SSD failure in an XIV system?

A. The extended read cache workload of the module with the failed SSD is redistributed to the remaining modules.

B. The module containing the failed SSD is phased out and all data is redistributed to the remaining modules.

C. All cached write data on the SSD is destaged to disks and SSD caching is disabled until the failed SSD is replaced.

D. The failed SSD's contents are rebuilt onto the hot spare SSD in the maintenance module.

Discussion 0

Correct Answer: A Vote an answer

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