IBM C4090-958 : Enterprise Storage Technical Support V3

Exam Code: C4090-958

Exam Name: Enterprise Storage Technical Support V3

Updated: Jul 23, 2026

Q & A: 143 Questions and Answers

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IBM C4090-958 Exam Syllabus Topics:

SectionObjectives
Topic 1: IBM Enterprise Storage Concepts- Storage architecture fundamentals
  • 1. Storage virtualization overview
    • 2. Block storage concepts
      - IBM storage portfolio overview
      • 1. Disk and flash storage technologies
        • 2. IBM SAN storage systems
          Topic 2: Troubleshooting and Support- Problem determination
          • 1. Fault isolation techniques
            • 2. Log analysis basics
              - Recovery procedures
              • 1. Data recovery concepts
                • 2. System restore operations
                  Topic 3: 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
                          Topic 4: Administration and Maintenance- Maintenance operations
                          • 1. System health checks
                            • 2. Firmware updates
                              - Monitoring and management
                              • 1. Performance monitoring
                                • 2. Capacity management

                                  IBM Enterprise Storage Technical Support V3 Sample Questions:

                                  1. A customer needs to know how many Global Mirror sessions are supported within a single DS8870. Which information source would have this information?

                                  A) DS8870 quick reference guide
                                  B) IBM DS6000 Series website
                                  C) DSsenes website
                                  D) DS8870 Redbook


                                  2. A customer has just learned that a brand new TS7650G ProtecTIER installation will not run as a virtual tape library with Symantec's NetBackup OST feature concurrently.
                                  When should this implementation situation have been discovered?

                                  A) The Solution Communication Vehicle (PTSCV) spreadsheet
                                  B) The Pre-Sales site survey
                                  C) The pre-qualification task performed by the subject matter expert for the disk arrays
                                  D) The Pre-Install Technical and Delivery Assessment


                                  3. A System z customer running z/OS Vi .11 is using a single D58801J storage system with Easy Tier enabled. Storage performance for a business critical application needs to improve to handle end-of-month and end-of-quarter processing. The customer requires minimal disruption to operations.
                                  Which feature or action should the technical specialist recommend to the customer to improve performance for this application?

                                  A) Adjust the cache block size used by the D58800
                                  B) Increase the installed cache of the D58800
                                  C) Install a megapack of SSDs
                                  D) Enable and configure I/O Priority Manager


                                  4. The technical specialist is meeting with the CFO and is discussing the need for a new storage solution to have virtualization.
                                  Which benefit of storage virtualization should the technical specialist emphasize to the customer?

                                  A) Reduces TCO
                                  B) Increases performance
                                  C) Increases number of disk drives
                                  D) Reduces number of servers


                                  5. A customer is looking to consolidate management from several heterogeneous storage platforms.
                                  Each system is currently attached to an OEM vendor solution with an 'SCSI backbone. Which of the following will help manage the user's storage environment?

                                  A) Tivoli Storage Manager
                                  B) Tivoli Storage Productivity Center
                                  C) IBM SAN Volume Controller
                                  D) IBM Systems Director


                                  Solutions:

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

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