IBM IBM Certified Specialist C4090-453

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IBM C4090-453 Exam Syllabus Topics:

IBM System Storage DS8000 Technical Solutions V3 Sample Questions:

1. Which of the following items would suggest that the use of space efficient FlashCopy for the Global Mirror secondary volume could present an issue?

A) There is a long distance between the primary and secondary sites
B) The customer is using Tivoli Storage Productivity Center for Replication to manage Global Mirror
C) The workload has a large amount of heavy sequential write activity
D) There are multiple primary disk subsystems in the Global Mirror session

2. A customer is planning to implement a new DS8000. They want to keep management of the DS8000 to a minimum. Which is the preferred method for allocating volumes to assist with this?

A) Rotate Extents to allow granular placement of extents across multiple ranks
B) Rotate Ranks to allow random positioning of ranks across arrays
C) Rotate Arrays to allow optimum placement of arrays in the DSS000
D) Rotate Volumes to allow volumes to fill ranks sequentially

3. In a DSSSOO controller which components are created during configuration of space-efficient (PTC-SE) storage in an extent pool?

A) Volume and virtual space
B) Source volume and target volume
C) Background copy and target copy
D) Virtual space and repository space

4. A customer wants to place some HDDs in a DS8870. The customer also wants to enable Easy Tier with SSD for all HDDs, but wants to minimize the amount of SSDs purchased.
Which option would be valid?

A) IBM recommends a 2:1 ratio of HDDs to SSDs, so the customer should purchase half the number of SSDs compared to the number of HDDs purchased.
B) IBM never recommends less than 50% of the configured drives be SSD, so the customer should match the number of HDDs with the same number of SSDs.
C) SSDs come in half drive sets (8 drives). Purchasing a single half drive set, if configured properly, would enable all the HDDs to be in an Easy Tier pool at the lowest cost.
D) SDDs come in full drive sets (16 drives). Purchasing a single full drive set, if configured properly, would enable all the HDDs to be in an Easy Tier pool at the lowest cost.

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

Solutions: