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IBM C4090-456 Exam Syllabus Topics:

IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. A customer wants to know how much capacity has been consumed against the Capacity on Demand entitlement on their XIV system.
How would the technical specialist determine the capacity consumed?

A) running the XCLI command vol_list and summing the Used Capacity column
B) running the XCLI command cod_list
C) looking at the soft consumed capacity in the bottom left corner of the XIV GUI
D) running the XCLI command system_capacity_list

2. A customer reports performance problems on an XIV Gen3 system. After further analysis of performance statistics, it appears that latency is high for reads but writes are acceptable. I/O size is generally small, with more writes than reads. Which option is likely to help the situation?

A) install ECoE adapters in the host
B) implementvolume striping on the host
C) enable IBM Easy Tier on the volumes
D) installSSDsintheXIVsystem

3. 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

4. A customer has requested a highly available solution with fully concurrent fail over for a VMware farm of hosts. The customer also has Oracle databases that demand very low latency (0.5 ms and lower). What would be the best solution for this environment?

A) SVC stretch clusterwith XIV and IBM FlashSystems (RamSan), plus enable EasyTier
B) Two XIV systems setup in synchronous mirrorwith SSD5 and VMware SRM
C) SVC with XIV and IBM FlashSystems (RamSan), plus enable Easy Tier
D) Two XIV systems setup in asynchronous mirror with SSDs and VMware SRM

5. Which statement is true regarding XIV connectivity to IBM PowerVM VIOS clients?

A) NPIV is not supported.
B) AIX, Linux and IBM i VIOS clients are supported.
C) NPIV must be used.
D) Direct iSCSI connection to VIOS is supported.

Solutions: