April 2017
Intermediate to advanced
470 pages
11h 12m
English
Content preview from Mastering OpenStack - Second Edition
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Where to place what
The proxy server in the Swift cluster will forward the client's request and send back the responses across the storage nodes, which might increase the CPU utilization.
Storage nodes will perform intensive disk I/O operations, while providing more CPUs is highly recommended with regards to the Swift process handler for the replication and auditing of data.
Thus, with more drives per node, more CPUs are needed. Assuming the using a CPU of 2 GHz processors with a ratio of cores GHz to drives of 3:4, we can calculate the number of cores that we will need, as follows:
(30 drives * 3/4)/2 GHz = 11.25 cores
The CPU cores can be obtained by using the following formula: (Total_Number_Drives * (core:drive ration)) / GHz_Cores ...
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