Real IBM C4090-453 practice exam questions for easy pass!
Last Updated: Jun 16, 2026
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1. A customer wants to be sure that all the volumes and LUNs associated with a program are copied at a consistent point in time.
Which disaster recovery function does the DS8000 support that this customer wishes to focus on?
A) Volume Copy
B) Global Copy
C) Consistency Groups
D) FlashCopy Manager
2. A potential DS8OIJO customer would like to understand the size of the non-volatile storage (NVS) as compared to the overall size of the DS8000 processor memory.
Which technical feedback to the customer is correct?
A) NVS size can be adjusted according to customer demand using the CLI
B) NVS size is 4 GB for all cache sizes up to 64 GB. and 16 GB for all overall cache sizes over 64 GB
C) NVS size is a part of the SARC algorithm and adapts automatically depending on the actual workload of the customer
D) NVS size is 1/32 scale (in minimum 1 GB) of the overall processor memory
3. The installation of a DSS000 cannot be performed by the Customer Engineer until the Customization and Configuration Worksheets have been completed.
In which document are these worksheets found?
A) DS8000 Configuration and Options Guide
B) DS8000 Architecture and Implementation Redbook
C) Pre-Sales Technical and Delivery Assessment (TDA)
D) DS8000 Introduction and Planning Guide
4. A pre-sales TDA must be done for the sale of a new DS8870. Which document type should be used for documenting the review details?
A) The generic STG pre-sales TDA guide
B) No special document format is required for the review summary
C) The D58870 Technical and Delivery Assessment (TDA) Guide
D) The IBM System Storage High End Disk Technical and Delivery Assessment (TDA) Guide
5. The output of what tool is used as input to Disk Magic to most accurately model a Windows host that will be used with an IBM D38000?
A) IOSTAT
B) Jetstress
C) Perimon
D) NMON
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: C |
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