FortiAnalyzer
FortiAnalyzer can receive logs and Windows host events directly from endpoints connected to EMS, and you can use FortiAnalyzer to analyze the logs and run reports.
edgar1
Staff
Staff
Article Id 193648
Description
The message READ-ONLY displayed on the GUI indicates that hard drives cannot be mounted and that the FortiAnalyzer cannot collect or register logs.

Scope
FortiAnalyzer  v4.0 MR3, v5.0, v5.2.

Solution
This issue may be solved by executing the following commands:

In v4.0 MR3
# diagnose sys file-system fsfix
In v5.0 or v5.2
# diagnose system fsck harddisk

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