IBM System Storage DS8000 Technical Solutions V3 : C4090-453

  • Exam Code: C4090-453
  • Exam Name: IBM System Storage DS8000 Technical Solutions V3
  • Updated: Jul 26, 2026     Q & A: 70 Questions and Answers

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IBM C4090-453 Exam Syllabus Topics:

SectionObjectives
DS8000 Architecture and Components- Storage virtualization concepts
- DS8000 hardware architecture overview
Installation and Configuration- Initial system setup and configuration
- Host connectivity configuration
Storage Management- Logical volumes and pools management
- Performance monitoring and optimization
Maintenance and Troubleshooting- Problem determination and resolution
- System diagnostics and logs
High Availability and Disaster Recovery- Backup and recovery strategies
- Copy services (Metro Mirror, Global Mirror)

IBM System Storage DS8000 Technical Solutions V3 Sample Questions:

1. Which of the following statements about the three-site solution Metro z/QS Global Mirror (MzGM) is true?

A) MzGM can be managed by GDPS and Tivoli Storage Productively Center
B) MzGM does not support z/Linux data on CKD devices
C) MzGM supports distributed systems data on PB devices
D) MzGM is a multi-target solution where the primary device is replicated both synchronously and asynchronously


2. As the result of a performance sizing a D38870 system configuration must include 96 x 600 GB 10000 rpm SAS drives, and only 32 GB cache.
Which DS8870 system version should to be offered?

A) DS8870 enterprise class configuration including 4 core processors
B) DS8870 business class configuration including 4 core processors
C) DS8870 business class configuration including 2 core processors
D) DS8870 enterprise class configuration including 2 core processors


3. Who is entitled to perform an IBM Secure Data Overwrite of a DSSS7O?

A) Field Support Personnel
B) STG Lab Services
C) Customers
D) Business Partners


4. After initial installation of DSSSOO systems in a customer site a review must be conducted to verify that the disk system performance is in range.
How can the cache hit ratio be verified?

A) Use Tivoli Storage Productively Center
B) Use the DSS000 Real Time Performance Monitor
C) Use the pen stat command in the CLI
D) Issue the CLI command dscli>verify-perf-read hit-time period


5. When configuring LUNs for IBM i which is not using VIOS, which of the following is true?

A) LUNs have 520 byte sectors and must match the size of internal drives.
B) LUNs have 512 byte sectors and are limited to 2 TB.
C) LUNs have 520 byte sectors and are limited to 2 TB.
D) LUNs have 512 byte sectors and must match the size of internal drives.


Solutions:

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

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