When a RAID array is initializing, it typically means that data is being written to all the hard drives in the array to ensure that it is fault-tolerant. This process involves making sure that the RAID configuration is correctly set up to provide redundancy and protect against data loss in the case of a drive failure. Therefore, the FortiAnalyzer is making the array fault-tolerant by writing to all of its hard drives.
To resolve the source and destination IP addresses without introducing any additional performance impact to FortiAnalyzer, you should configure the resolution on FortiGate devices. FortiAnalyzer is designed more for logging and reporting, while resolving IP addresses can be handled efficiently by the FortiGate device to minimize the load on FortiAnalyzer and ensure timely DNS resolution.
The disk quota refers to the maximum disk utilization for all devices in the ADOM. This means that the total amount of disk space allocated to store logs and reports from all devices within that ADOM is limited by this quota.
Using an NTP server on FortiAnalyzer and all registered devices that log into FortiAnalyzer ensures that the clocks of all devices are synchronized. This is crucial for properly correlating logs, as log entries from different devices need to be accurately timestamped for effective event analysis, troubleshooting, and reporting.
When FortiAnalyzer is temporarily unavailable during a firmware upgrade, FortiGate uses the miglogd process to cache the logs. The miglogd process ensures the logs are retained until FortiAnalyzer is back online and can receive the cached data.