OneFS: Warn event: Node pool <node pool name> is underprotected.
Summary: A warning event stating a Node Pool is underprotected may be posted.
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Symptoms
ISILON Warns event on <IP>: Node pool <node pool name> is underprotected.
Cause
Starting with version 7.2, OneFS has a feature to provide a suggested protection level for node pools. This is documented in the OneFS Administration Guides (see PowerScale OneFS Info Hubs)
Based on the configuration of your Isilon cluster, OneFS automatically calculates the amount of protection that is recommended to maintain stringent data protection requirements. OneFS includes a function to calculate the suggested protection for data to maintain a theoretical mean-time to data loss (MTTDL) of 5000 years. Suggested protection provides the optimal balance between data protection and storage efficiency on your cluster. Multiple requested protection settings can be specified when configuring File Pool Policies. Protection settings can be applied to a single file, to a subset of files called file pools, or for all files on the cluster. Specify a setting below suggested protection is not recommended. OneFS periodically checks the protection level on the cluster, and alerts if data falls below the recommended protection.
The Suggested protection level can be found by going to the File System tab > Storage Pools > SmartPools > Edit node pool details > edit:
Resolution
The alert is only a suggestion. The alert can be ignored, or the protection level can be changed to the suggested protection level. It is the decision of the cluster administrator to review cluster workflow, growth, and protection requirements before choosing to either ignore or change the protection level.
Additional Information
If the requested protection is higher than the suggested protection, you may also see "<node pool> has a different requested protection from the suggested protection of +2d:1n."
<node pool> has a requested protection of +3d:1n1d (or other). Browse to SmartPools > Tiers & Node Pools to update requested protection for this node pool."
Also see KB 000038530 - WebUI SmartPools message " <Pool name> has a different requested protection from suggested protection of undefined. "
Affected Products
Isilon NL400Products
Isilon NL400Article Properties
Article Number: 000031496
Article Type: Solution
Last Modified: 30 Oct 2025
Version: 5
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