C4090-456 exam dumps

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  • Exam Code: C4090-456
  • Exam Name: IBM XIV Storage System Technical Solutions V4
  • No. of Questions: 70 Questions and Answers
  • Updated: Sep 15, 2026

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IBM C4090-456 Exam Syllabus Topics:

SectionWeightObjectives
Data Protection and Replication15%- Consistency groups and snapshots
- Synchronous and asynchronous mirroring
- Disaster recovery concepts
Installation and Planning21%- Capacity planning and configuration
- Environmental and site requirements
- Technical Delivery Assessment (TDA)
XIV Storage System Overview and Architecture17%- Grid-based architecture and design principles
- System components and hardware models
- Business value and competitive advantages
Provisioning and Management18%- Capacity on Demand (CoD)
- Storage pools and thin provisioning
- Volume management and snapshots
- GUI and XCLI administration
Performance and Troubleshooting12%- Performance characteristics
- Basic troubleshooting procedures
- Monitoring and optimization
Interoperability and Virtualization Integration17%- VMware integration including VAAI
- Microsoft VSS and Hyper-V support
- SAN Volume Controller (SVC) integration
- Multipathing and host connectivity

IBM XIV Storage System Technical Solutions V4 Sample Questions:

An XIV administrator wants to migrate a legacy DS4700 to XIV. The DS4700 is mirrored across a low-bandwidth link to a second DS4700 at a second site. The XIV volumes will need to be mirrored to a second XIV using asynchronous replication.
What feature will help perform this task?

  • A. offline initialization
  • B. cache-disabled volumes
  • C. volume mirroring
  • D. asynchronous migration
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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

  • A. for half of the interface modules add the SAP application, with the remaining modules serving all other I/O
  • 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 all hosts except the SAP application to it
  • D. limited to 10,000 IOPS and add the SAP application servers to it
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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 both XIV systems
  • B. add modules to the new (primary) XIV Gen3
  • C. replace the new (primary) XIV Gen3 InfiniBand switches with Ethernet switches
  • D. add modules to the existing (secondary) XIV
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

A storage administrator wishes to migrate a legacy storage controller's volumes to a SAN Volume Controller. The controller can provide SAS or iSCSI host connections only. An XIV is virtualized by the SVC and has been upgraded from six modules to nine to assist with the migration project. The additional storage is yet to be presented to the SVC.
What would be the best method to transfer the data?

  • A. Presentvolumestothe SVC using SAS. Mirrorthe volumes onto the newly-presented XIV storage.
  • B. Present volumes to the XIV using iSCSl. Migrate the volumes to XIV using the availablecapacitythen to the SVC.
  • C. Present volumes to the XIV using SAS. Migrate the volumes to XIV using the availablecapacitythen to the SV
  • D. Present volumes to the SVC using iSCSl. Mirror the volumes onto the newly-presented XIV storage.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Compared to other IBM storage offerings, which of the following is unique functionality on an XIV system?

  • A. ability to take snapshots
  • B. reduced single points of failure
  • C. prevents hotspots
  • D. IP based replication
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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