March 2008
Intermediate to advanced
326 pages
10h 22m
English
Chapter 4. I/ O Groups and nodes 57 4.2.1 Impact when running single node I/ O Groups We examined the impact of a node failure on the I/ O throughput. In this example, we used IOMeter on a Windows host to generate disk traffic for one hour. We ran the same test using four scenarios to get an idea of the change in performance during each of the scenarios: Test A: No SVC in the path and 70 GB coming from a DS4500 Test B: SVC in the path and 70 GB image mode Test C: SVC in the path and 70 GB coming from two MDisks Test DL: SVC node failure and one node’s ports were disabled at the switch Our aim was to see what the change in performance was when a node failed and we compared that to ...
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