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IBM IBM Certified Specialist C4090-958

C4090-958

Exam Code: C4090-958

Exam Name: Enterprise Storage Technical Support V3

Updated: Sep 18, 2026

Q & A: 143 Questions and Answers

C4090-958 Free Demo download:

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IBM C4090-958 Exam Syllabus Topics:

SectionObjectives
IBM Enterprise Storage Concepts- Storage architecture fundamentals
  • 1. Block storage concepts
    • 2. Storage virtualization overview
      - IBM storage portfolio overview
      • 1. Disk and flash storage technologies
        • 2. IBM SAN storage systems
          Troubleshooting and Support- Recovery procedures
          • 1. System restore operations
            • 2. Data recovery concepts
              - Problem determination
              • 1. Log analysis basics
                • 2. Fault isolation techniques
                  Installation and Configuration- Connectivity and integration
                  • 1. Host attachment methods
                    • 2. SAN connectivity basics
                      - System setup and initialization
                      • 1. Storage provisioning concepts
                        • 2. Basic configuration tasks
                          Administration and Maintenance- Monitoring and management
                          • 1. Capacity management
                            • 2. Performance monitoring
                              - Maintenance operations
                              • 1. System health checks
                                • 2. Firmware updates

                                  IBM Enterprise Storage Technical Support V3 Sample Questions:

                                  Question #1
                                  A customer is requesting an IBM XIV Gen 3 and would like to order a full module system the with SSD drives installed in the modules. The customer would like to know if the SSD drives will provide Easy Tier functionality allowing the SSD drives to expand usable capacity.
                                  How should the technical specialist respond?

                                  A. The SSD drives installed in the modules expands usable capacity but does not enable Easy Tier without an additional license
                                  B. Only half rack IBM XIV Gen 3 systems have Easy Tier license options.
                                  C. Only IBM XIV Gen 3 systems can use the additional SSD drives installed in the modules.
                                  D. Easy Tier is not an available function and the SSD drives do not add usable capacity.


                                  Question #2
                                  Which statement is true regarding real4ime compression in the SAN Volume Controller and Storwize V7000 code release 64?

                                  A. Compression feature is available on all SAN Volume Controller models as long as the correct code 64 is implemented.
                                  B. There is no limit to the number of volumes that can be compressed.
                                  C. Creating the first compressed volume in an I/O group will instantly dedicate CPU and memory resources.
                                  D. No additional license is required; it is part of the base product.


                                  Question #3
                                  A large multi-site company is considering the purchase of a DS8000 system and would like to build a Virtual Desktop Infrastructure for approximately 400 users. Cost is a concern.
                                  What should the technical specialist propose to help avoid performance problems during peak times?

                                  A. Adding an IBM FlashSystem 810
                                  B. Thin Provisioning
                                  C. FlashCopy
                                  D. SSD drives with Easy Tier


                                  Question #4
                                  When planning to use an SAN Volume Controller split cluster, why is it strongly recommended to have a third site available?

                                  A. A third site is recommended to house the quorum disk candidates.
                                  B. A third site is recommended to house the active quorum disk.
                                  C. A third site is recommended to house the managed disks.
                                  D. A third site is recommended to house the SSPC.


                                  Question #5
                                  Which statement is true about Capacity Magic outputs?

                                  A. They are used as an input into Disk Magic.
                                  B. They are used to determine the overall performance of a solution.
                                  C. They are input directly into eConfig.
                                  D. They are used to provide the number and size of drives.


                                  Solutions:

                                  Question #1
                                  Correct Answer: D
                                  Question #2
                                  Correct Answer: C
                                  Question #3
                                  Correct Answer: B
                                  Question #4
                                  Correct Answer: B
                                  Question #5
                                  Correct Answer: B

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