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IBM C4090-453 Exam Syllabus Topics:

IBM System Storage DS8000 Technical Solutions V3 Sample Questions:

Question 1

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

Question 2

A customer requires an infrastructure to support disaster recovery of critical applications between two remote data centers. One data center is in Tokyo and one is in Beijing. The customer's Recovery Point Objective (RPO) requires a six-hour window for a bandwidth of 100 MB/s and a new storage system for a total of 4 TB of data. They estimate 100 MB of new data produced hourly.
What data synchronization method would be recommended to meet the requirements?

A. Global Mirror
B. Snapshot
C. FlashCopy
D. Metro Mirror

Question 3

A potential DS8OIJO customer would like to understand the size of the non-volatile storage (NVS) as compared to the overall size of the DS8000 processor memory.
Which technical feedback to the customer is correct?

A. NVS size can be adjusted according to customer demand using the CLI
B. NVS size is a part of the SARC algorithm and adapts automatically depending on the actual workload of the customer
C. NVS size is 4 GB for all cache sizes up to 64 GB. and 16 GB for all overall cache sizes over 64 GB
D. NVS size is 1/32 scale (in minimum 1 GB) of the overall processor memory

Question 4

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

Question 5

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

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

Solutions: