IBM : C4090-456 Questions & Answers

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IBM C4090-456 Exam Syllabus Topics:

IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. A customer wants to set up a Windows 2008 cluster with three nodes, with application data presented from a fifteen module XIV Gen3. All three nodes will run applications under normal operating conditions. Each node has a single dual- port Fibre Channel host bus adapter.
Assuming a dual fabric SAN, how should the cluster nodes be zoned to the XIV within each SAN?

A) each host port should be zoned to a single port from two XIV modules, ensuring that the host ports from the remaining two nodes are zoned to different XIV modules
B) each host port should be zoned to a single port from three XIV modules, ensuring that the host port on the second fabric is zoned with a single port from the remaining three XIV modules
C) ports for all three nodes should be grouped together into a single zone, along with a single XIV port from each available XIV interlace module
D) each host port should be zoned to a single port from one XIV module, ensuring that no other host ports are zoned to the same module

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

3. Expanding an XIV system with more modules for capacity and performance is an example of what?

A) a grid-based storage architecture
B) a non-shared cluster architecture
C) a clustered dual controller architecture
D) an active-passive controller architecture

4. An XIV administrator wants to migrate a legacy DS4700 to XIV. The DS4700 is mirrored across a low-bandwidth link to a second DS4700 at a second site. The XIV volumes will need to be mirrored to a second XIV using asynchronous replication.
What feature will help perform this task?

A) offline initialization
B) cache-disabled volumes
C) volume mirroring
D) asynchronous migration

5. On an XIV system, what is the minimum hardware configuration when the Capacityl on Demand feature is used?

A) 12 modules
B) 15 modules
C) 9 modules
D) 6 modules

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