> # Guidelines and Limitations

> See the "CFS Merge Support" topic for detailed concepts.

> When merging two system message logging databases, follow these guidelines:

> - Be aware that the merged database is a union of the existing and received database for each switch in the fabric.
> - Verify that the merged database will only have a maximum of three system message logging servers.

> Caution | If the merged database contains more that three servers, the merge will fail.

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