A company is running their parts inventory applications on an HP 3PAR F400 storage system with
NearLine (SATA) disk drives. These applications are currently using LUN utilizing a Raid 5 (7+1)
NL CPG. They are having performance issues while compiling their monthly reports in a timely
manner. HP 3PAR System Reporter indicates several high write I/O volumes during production
runs.
What should the design team recommend to improve this performance?
A.
HP 3PAR Adaptive Optimization and a new RID 1 CPG
B.
snapshot to capture all writes to a RAID 1 CPG
C.
thin provisioning to achieve a better distribution across all physical disks
D.
HP 3PAR Dynamic Optimization to move the high performance volumes to a new RAID 1 CPG
Explanation:
http://www8.hp.com/h20195/v2/GetDocument.aspx?docname=4AA4-4524ENW,
page 12
• Allows for large-scale performance optimization after adding new resources to the system or
moving a large number of volumes between tiers
HP 3PAR Dynamic Optimization is used when new hardware is added or any time? because I have doubt with answer A and D.
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Dynamic Optimization can be used as much as you want so I would still go for D
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I think the correct answer is D. They don’t mention it here, but with DO, you can move a specific volume to a high performance tier during peak workloads, then specify to have it moved back to NL drives once the IO requests to that specific volume have droped…
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