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IBM C4090-456 Exam Syllabus Topics:

IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. Which of the following statements is true of the XIV architecture?

A) Every logical volume is spread over every physical drive.
B) In a fifteen module XIV, fifteen physical disks are allocated as hot spares.
C) For each mirrored 1 MB partition, one copy is always on an interface module.
D) Storage Pools are used to group volumes with similar performance requirements.

2. How many active module interconnects are there between data modules on an XIV system Model A14?

A) one Ethernetconnection
B) two Ethernetconnections
C) four Ethernet connections
D) sixEthernetconnections

3. Compared to other IBM storage offerings, which of the following is unique functionality on an XIV system?

A) prevents hotspots
B) reduced single points of failure
C) IP based replication
D) ability to take snapshots

4. Following a proof of concept, it has been determined that an eleven module XIV system containing 2 TB drives is the minimum configuration suitable for the workload, which consists primarily of random writes. The customer is concerned about the upfront costs so the sales representative has suggested a six module system with 3 TB drives, which would also provide ample capacity for the application.
Given the customer's concerns, which configuration should the technical specialist recommend to best meet the customer's requirements?

A) a six module XIV with 3 TB drives and SSDs
B) an eleven module XIV with 3 TB drives and six CoD activations
C) an eleven module XIV with 2 TB drives and eight CoD activations
D) a nine module XIV with 2 TB drives and six CoD activations

5. A customer complains that their SAP database now performs worse than it did before being migrated from traditional RAID storage to XIV. The database was configured using 20 x 200GB XIV LUNs presented to an AIX 6 host OS where they are concatenated and striped into six volumes for the databases and logs. No changes have been made in the transition to XIV.
What if anything can be done to improve performance?

A) implement static load balancing and increase the queue depth of the host adapters
B) the SAP volumes should be put into a QoS Performance Class
C) add Fibre Channel adapters to the host and balance volumes across the adapters
D) the databases should be reorganized into larger volumes on the XIV and not striped within the OS

Solutions: