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When sizing the ICAP servers for the PowerScale cluster, the number of ICAP servers deployed per PowerScale node (ICAP/node) is often used as a standard measurement.
If there is more than one ICAP server per cluster, OneFS distributes files to the ICAP servers in a round-robin basis and does not consider the processing power of the ICAP servers when distributing files. Because of this, it is important to ensure that the processing power of each ICAP server is relatively equal. If one server is significantly more powerful than another, OneFS does not send more files to the more powerful server.
Dell Technologies recommends the following general guidelines as a starting point for sizing:
Note: The above guideline is a general starting point for sizing ICAP servers for PowerScale. Use the considerations in the following sections to further refine your sizing.