Exam Name: IBM XIV Storage System Technical Solutions V4
Certification Provider: IBM
Corresponding Certification: IBM Certified Specialist
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IBM C4090-456 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Protection and High Availability | - Snapshot and replication concepts - Failure handling and redundancy mechanisms |
| IBM XIV Storage System Architecture | - Grid architecture and data distribution concepts - XIV system components and design principles |
| Troubleshooting and Maintenance | - Common system issues and diagnostics - Firmware updates and system maintenance procedures |
| Administration and Management | - Monitoring and performance management - Storage pool and volume management |
| Installation and Configuration | - Host connectivity and storage provisioning - Initial system setup and deployment |
IBM XIV Storage System Technical Solutions V4 Sample Questions:
A customer wants to know how much capacity has been consumed against the Capacity on Demand entitlement on their XIV system.
How would the technical specialist determine the capacity consumed?
- A. running the XCLI command system_capacity_list
- B. running the XCLI command cod_list
- C. running the XCLI command vol_list and summing the Used Capacity column
- D. looking at the soft consumed capacity in the bottom left corner of the XIV GUI
Correct Answer: B 🗳️
How does IBM XIV SSD technology provide longer life over competitors' use of SSD technology?
- A. hybrid algorithms combine features of SSDswith existing HDDsin the same unit
- B. patented wear-leveling algorithm designed for SSD longevity
- C. IBM SSDs are filled with write blocks of 1024kb in random I/O operations
- D. common off-the-shelf components minimize the use of SSDs for write environments
Correct Answer: B 🗳️
What is the fastest way to see which volume is receiving the most IOPS on the XIV?
- A. open XIV GUI and select the first 12 volumes, and then next 12 and so on
- B. run XCLI command xcii volume_max_iops_list
- C. opentheXIV GUI and checkthe volume view
- D. openXIVTopinthedefaultview
Correct Answer: D 🗳️
How does the XIV system protect data arriving from hosts?
- A. data is written to a single module before acknowledgement to the host
- B. each module internally mirrors its cache to a special segment of memory
- C. all data is written to cache in two modules and then acknowledged to the host
- D. MPIO distributes a single I/O down multiple paths to different XIV modules
Correct Answer: C 🗳️
Compared to other IBM storage offerings, which of the following is unique functionality on an XIV system?
- A. reduced single points of failure
- B. IP based replication
- C. prevents hotspots
- D. ability to take snapshots
Correct Answer: C 🗳️
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