IBM C4090-453 : IBM System Storage DS8000 Technical Solutions V3

  • Exam Code: C4090-453
  • Exam Name: IBM System Storage DS8000 Technical Solutions V3
  • Updated: Oct 07, 2026
  • Q & A: 70 Questions and Answers

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IBM C4090-453 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Interoperability and Integration14%- PowerHA and GDPS integration
- Open systems and mainframe environments
- VMware integration
- Tivoli Storage Productivity Center
Topic 2: DS8000 Architecture and Components22%- Cache and Non-Volatile Storage (NVS)
- RAS features and reliability
- Easy Tier and storage tiering
- Hardware architecture and components
Topic 3: Migration and Support10%- Data migration strategies
- Upgrade and compatibility
- Support resources and documentation
Topic 4: Copy Services and Advanced Functions28%- Metro Mirror / Global Mirror
- Encryption and security
- Thin provisioning and QoS
- FlashCopy
- z/OS specific copy services
Topic 5: Solution Design and Sizing26%- TDA (Technical Delivery Assessment) process
- Disk Magic and Capacity Magic tools
- Requirements analysis
- Configuration and sizing

IBM System Storage DS8000 Technical Solutions V3 Sample Questions:

Question #1

Which of the following statements regarding the DSS000 Metro Mirror consistency group function is true?

  • A. Metro Mirror consistency groups are not required to maintain data consistency across devices in a disaster situation.
  • B. A Metro Mirror consistency group must be contained within a single primary disk subsystem.
  • C. Simply enabling the Metro Mirror consistency group function on a PPRC path will provide consistency for all devices in this LSS.
  • D. The consistency group functionality requires external automation such as Tivoli Storage Productivity Center V5.x or GDPS to work correctly.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #2

Which statement is true of the Easy Tier feature on DS8000?

  • A. It handles data in 256 MB chunks.
  • B. It requires SSDs to be added to a heterogeneous pool to operate.
  • C. It is a priced feature by terabytes used.
  • D. It will operate in a homogeneous pool.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #3

Which statement about I/O Priority Manager on the DS8000 is true?

  • A. It allocates cache on 4K boundaries to improve performance
  • B. It can be more granular on z/OS than any other operating system
  • C. It needs at least two tiers of disks to work
  • D. It can interface with VMware VAAI primitives to improve performance
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #4

Shortly after the installation of a DSS000 and before Call Home has been fully set-up, the customer notices an error message relating to a failed DS8000 primary power supply.
What action should the customer take?

  • A. Report it to their IBM or Business Partner pre-sales technical support person
  • B. Mention it to the IBM Customer Engineer at the next monthly review
  • C. Raise a call with the IBM Hardware Support Center
  • D. Wait for IBM to make contact
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #5

A customer has recently decommissioned their DS8700 wants to use the same data center floor space for a new D38 870.
What is an important fact for the technical specialist to discuss with the customer as it relates to data center requirements?

  • A. The DS8870 uses a different power connector than the D68700 so new cords will need to be supplied.
  • B. The rack dimensions on the DS8870 are larger than the D38700 so more floor space will be needed.
  • C. The DS8870 uses more power than the DS8700 so more power cords will need to be ordered.
  • D. Air circulation in the DS8870 has changed and flows back to front so cooling vent locations will need to be adjusted.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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