IBM C4090-453 real exam prep : IBM System Storage DS8000 Technical Solutions V3

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IBM C4090-453 Exam Syllabus Topics:

IBM System Storage DS8000 Technical Solutions V3 Sample Questions:

1. 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) NMON
C) Jetstress
D) Perimon

2. Which of the following statements regarding the DSS000 Metro Mirror consistency group function is true?

A) Simply enabling the Metro Mirror consistency group function on a PPRC path will provide consistency for all devices in this LSS.
B) Metro Mirror consistency groups are not required to maintain data consistency across devices in a disaster situation.
C) The consistency group functionality requires external automation such as Tivoli Storage Productivity Center V5.x or GDPS to work correctly.
D) A Metro Mirror consistency group must be contained within a single primary disk subsystem.

3. What factor in the architecture of the DSS000 allows for concurrent microcode updates to be performed?

A) Control-unit Initiated Reconfiguration support
B) Subsystem Device Drivers
C) Call Home and Dial-in support
D) Built-in redundancy

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

A) It increases the time before the DS8000 automatically shuts down in the event of a power failure
B) It removes the need for an external generator in case of 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

5. A potential DS8870 customer knows that RAID 5 works much faster and is more capacity-efficient than RAID 6, but they fear for double disk failures due to high rebuild times at large disk sizes.
How should the technical specialist address this concern?

A) Suggest configuring large storage pools with multiple RAID 5 arrays.
B) Explain RAID 6 is the only applicable solution.
C) Discuss the DSS000 Smart Rebuild function with the customer.
D) Discuss how additional hot spares can be configured per device adapter pair.

Solutions: