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Isilon InsightIQ User Guide

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Active Clients report

The Active Clients report shows the number of unique client addresses that generate protocol traffic on the monitored cluster.

Clients that are connected, but not generating any traffic, are not counted in this report. You can optionally break out this data by node or protocol.

The recommended number of active clients that are supported for NFS is approximately 1,000 per node (OneFS 7.1.1 and earlier).

For SMB 2.0 and later, the number of active clients that are supported depends on the version of OneFS.

Table 1. Active clients by OneFS version
OneFS version Number of active clients per node (SMB 2.0 or later)
7.0 Through 7.1 1,000
7.1.1 and later 1,500

Depending on usage details, exceeding the recommendations in OneFS 7.1.0 and earlier can lead to dropped connections or other performance problems. Generally speaking, if the number of active connections exceeds 90 percent of the limits, add nodes to the cluster when possible.

In OneFS 7.1.1 and later, over allocation is handled differently. Connection requests are denied when the total number of clients equals 90 percent of the total recommended limit for the cluster. If there many active clients, and if that quantity is near the supported limit, check each node to ensure that the load is evenly distributed. Verify that any one node is not oversubscribed.

Keep these limits in mind when you perform maintenance on a node so that you do not exceed the pool or cluster limit when you take nodes offline.


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