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: Sep 06, 2026
  • Q & A: 70 Questions and Answers

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IBM C4090-456 Exam Syllabus Topics:

SectionObjectives
Topic 1: Performance and Advanced Features- Performance optimization
  • 1. Cache optimization
    • 2. Workload balancing
      - Advanced storage features
      • 1. Thin provisioning
        • 2. Data replication concepts
          Topic 2: XIV Architecture and Concepts- XIV system architecture
          • 1. Data distribution mechanisms
            • 2. Grid architecture and scalability
              - Hardware components
              • 1. Storage modules and interconnects
                • 2. System redundancy design
                  Topic 3: Maintenance and Troubleshooting- Problem determination
                  • 1. Log analysis
                    • 2. Hardware diagnostics
                      - System maintenance
                      • 1. Component replacement procedures
                        • 2. Firmware upgrades
                          Topic 4: Administration and Management- System monitoring
                          • 1. Performance monitoring tools
                            • 2. Event and alert management
                              - Storage provisioning
                              • 1. Volumes and pools management
                                • 2. Snapshot configuration
                                  Topic 5: Installation and Configuration- Initial system setup
                                  • 1. Network configuration
                                    • 2. System initialization procedures
                                      - Host connectivity
                                      • 1. iSCSI configuration
                                        • 2. Fibre Channel attachment

                                          IBM XIV Storage System Technical Solutions V4 Sample Questions:

                                          Question #1

                                          On a thin-provisioned pool the size of the volume is limited by:

                                          • A. the hard capacity of the volume
                                          • B. the hard capacity of the storage pool
                                          • C. the hardcapacityof the XIV
                                          • D. the soft capacity of the storage pool
                                          Answer: D
                                          Question #2

                                          In a six module XIV system, I/O activity involving a specific logical volume is handled by how many spindles?

                                          • A. 36
                                          • B. 180
                                          • C. 72
                                          • D. 108
                                          Answer: C
                                          Question #3

                                          On an XIV system, what is the minimum hardware configuration when the Capacityl on Demand feature is used?

                                          • A. 12 modules
                                          • B. 15 modules
                                          • C. 9 modules
                                          • D. 6 modules
                                          Answer: D
                                          Question #4

                                          A TELCO customer has an application that generates intensive small block random reads. The customer installed one XIV Gen3 system and is dissatisfied with this choice. They have enough performance on writes and sufficient capacity.
                                          In order to consolidate more applications what should the technical specialist advise?

                                          • A. orderthe SSD option and use itin conjunction with Q0S
                                          • B. request IBM to change the nearline SAS drives with SAS 10k drives
                                          • C. use external storage with FC drives and virtualize it under XIV
                                          • D. order an extra frame with SAS 15k drives
                                          Answer: A
                                          Question #5

                                          A customer wants to set up a Windows 2008 cluster with three nodes, with application data presented from a fifteen module XIV Gen3. All three nodes will run applications under normal operating conditions. Each node has a single dual- port Fibre Channel host bus adapter.
                                          Assuming a dual fabric SAN, how should the cluster nodes be zoned to the XIV within each SAN?

                                          • A. each host port should be zoned to a single port from three XIV modules, ensuring that the host port on the second fabric is zoned with a single port from the remaining three XIV modules
                                          • B. each host port should be zoned to a single port from one XIV module, ensuring that no other host ports are zoned to the same module
                                          • C. each host port should be zoned to a single port from two XIV modules, ensuring that the host ports from the remaining two nodes are zoned to different XIV modules
                                          • D. ports for all three nodes should be grouped together into a single zone, along with a single XIV port from each available XIV interlace module
                                          Answer: A

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