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IBM C4090-456 Exam Syllabus Topics:

IBM XIV Storage System Technical Solutions V4 Sample Questions:

1. XIV hardware architecture optimizes the usage of snapshots by:

A) a redirect-on-write operation using all drives in any snapshot process
B) offering the possibility to isolate the drives used for snapshot target space
C) copying data on write so the production drives are not over stressed
D) limiting the total number of snapshots to a maximum of 128 active pairs

2. Which two of the following IBM products assure online data migration? (Select two)

A) DS8870
B) DS5000series
C) XIV Storage System
D) SAN Volume Controller
E) FlashSystems

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

4. Which of the following occurs in the event of an SSD failure in an XIV system?

A) The failed SSD's contents are rebuilt onto the hot spare SSD in the maintenance module.
B) All cached write data on the SSD is destaged to disks and SSD caching is disabled until the failed SSD is replaced.
C) The extended read cache workload of the module with the failed SSD is redistributed to the remaining modules.
D) The module containing the failed SSD is phased out and all data is redistributed to the remaining modules.

5. A storage administrator wishes to migrate a legacy storage controller's volumes to a SAN Volume Controller. The controller can provide SAS or iSCSI host connections only. An XIV is virtualized by the SVC and has been upgraded from six modules to nine to assist with the migration project. The additional storage is yet to be presented to the SVC.
What would be the best method to transfer the data?

A) Present volumes to the XIV using iSCSl. Migrate the volumes to XIV using the availablecapacitythen to the SVC.
B) Presentvolumestothe SVC using SAS. Mirrorthe volumes onto the newly-presented XIV storage.
C) Present volumes to the SVC using iSCSl. Mirror the volumes onto the newly-presented XIV storage.
D) Present volumes to the XIV using SAS. Migrate the volumes to XIV using the availablecapacitythen to the SV

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