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IBM C4090-453 Exam Syllabus Topics:

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

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

3. A customer already has a D38000 with RAID 10 protection for their production data. They want to implement NL-SAS drives in the same DS8000 for archive data.
Which disk protection should be used for this and why?

A) RAID 10 because this is the only protection supported for NL-SAS drives
B) RAID 5 because data on these drives is less critical than the production data
C) RAID 0 because archive data isn't mission critical and they should use tape backup
D) RAID 6 because the time to rebuild NL-SAS drives would leave the array exposed for a long time after a single disk failure

4. The value-based licensing for the Operating Environment License (OEL) is priced based on what characteristics?

A) Only the total raw capacity
B) Disk drive type and raw capacity
C) Amount of cache, number of host adapters, usable capacity
D) Only the amount of usable capacity

5. What is the purpose of the Power Line Disturbance feature in a D38000?

A) It removes the need for an external generator in case of power failure
B) It increases the time before the DS8000 automatically shuts down in the event of a power failure
C) It is required to retain data on SSDs in the event of a power failure
D) It keeps the disks spinning for up to one hour when there is a power failure

Solutions: