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# Server alerts

Server alerts are alerts that are generated by Unisphere itself.

Unisphere generates server alerts under the conditions that are listed in the following table:

Checks are run on 10 minute intervals, and alerts are raised on 24-hour intervals from the time the server was last started. These time intervals also apply to discover operations. That is, performing a discover operation does not force the delivery of these alerts.

| NOTE: Runtime alerts are not storage system-specific. They can be deleted if the user has admin or storage admin rights on at least one storage system. A user with a monitor role cannot delete the server alerts.

Server alert | Number of volumes | Threshold | Alert Details
--- | --- | --- | ---
Total memory on the Unisphere server | 0–64,000 | 12 GB | System memory <# GB> is below the minimum requirement of <# GB>
64,000–128,000 | 16 GB
128,000–256,000 | 20 GB
Free disk space on the Unisphere installed directory | 0–64,000 | 100 GB | Free disk space <# GB> is below the minimum requirement of <# GB>
64,000–128,000 | 140 GB
128,000–256,000 | 180 GB
Number of managed storage systems | Threshold is 20. | Number of managed storage systems <#> is over the maximum supported number of #
Number of managed volumes | 256,000 | Number of managed volumes <#> is over the maximum supported number of <#>. Solutions Enabler may indicate a slightly different number of volumes than indicated in this alert.
Number of gatekeepers | 6 | Number of gatekeepers <#> on storage system is below the minimum requirement of 6.