E20-816 · Question #109
An existing 2-engine VMAX array has 192 x 450GB 15K Fibre Channel drives in a single Virtual Provisioning pool. Two Linux database hosts are connected to the array and both are running PowerPath…
The correct answer is A. Check the host for queued I/Os, use SPA to examine I/O size and utilization on the G0 FA. See the full explanation below for the reasoning.
Question
An existing 2-engine VMAX array has 192 x 450GB 15K Fibre Channel drives in a single Virtual Provisioning pool. Two Linux database hosts are connected to the array and both are running PowerPath. Host oradb01 is connected to the E0 FA ports on each director and is meeting the customer performance SLA. Host oradb02 is connected to the G0 FA ports on each director-and for the past 3 days this host has been experiencing poor performance during peak activity in the afternoons. What steps do you take to identify likely bottlenecks?
Options
- ACheck the host for queued I/Os, use SPA to examine I/O size and utilization on the G0 FA
- BUse SMC to check for Virtual Pool alerts, use SPA to measure drive response times
- CRun iostat -x in order to compare I/O size and read/write ratio of the two hosts
- DOpen a case with EMC Support and upload Oracle Statspack information
How the community answered
(26 responses)- A77% (20)
- B12% (3)
- C4% (1)
- D8% (2)
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