Set a ratio of internode network bandwidth allocation to internal processing I/O operations in cases where host I/O operations run simultaneously with internal processing I/O operations (Rebuild, drive data relocation).
When internal processing I/O operations are not being performed, the entire internode network bandwidth is allocated to host I/O operations irrespective of this setting.
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Set value |
Description |
Remarks |
|---|---|---|
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VeryHigh |
Gives the highest priority to internal processing I/O. A maximum of approximately 80% of the internode network bandwidth is allocated to internal processing I/O operations. The condition for "VeryHigh" to work effectively is that at least 25-Gbps bandwidth should be available for the internode network. |
The allocation ratios shown on the left are based on the assumption that 10 Gbps or more (25 Gbps or more for VeryHigh) bandwidth is available in the internode network. |
|
High |
Prioritizes internal processing I/O operations. A maximum of approximately 80% of the internode network bandwidth is allocated to internal processing I/O operations. |
|
|
Middle (Default) |
A maximum of approximately 60% of the internode network bandwidth is allocated to internal processing I/O operations. |
|
|
Low |
Prioritizes the host I/O operations. A maximum of approximately 20% of the internode network bandwidth is allocated to internal processing I/O operations. |
To operate the internal processing I/O with the VeryHigh setting, at least 25-Gbps bandwidth should be available for the internode network. Before setting, review the configuration of the internode network to ensure that it meets the requirements. If the conditions are not met, performance of both host I/O and internal processing I/O might be significantly degraded because all available internode network bandwidth is used up.
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Required role: Storage or Service