In a Fortinet Security Fabric, logs from downstream devices can be sent to FortiAnalyzer through the root FortiGate. This is why all the logs have the same source IP address (the root FortiGate). The root FortiGate aggregates and forwards the logs from all downstream devices, so the source IP in the log capture will appear to be from the root FortiGate itself, even though the logs originate from multiple devices within the fabric.

RAID 10 combines mirroring (RAID 1) and striping (RAID 0). In a RAID 10 setup with four disks, data is mirrored across two pairs of disks, and those pairs are striped for performance. This results in improved performance and fault tolerance, but the total usable storage is 50% of the total raw storage, meaning four 2 TB disks provide 4 TB of usable space.

When upgrading firmware on an HA cluster of FortiAnalyzer devices, it is recommended to upgrade the secondary devices first, and then upgrade the primary device to minimize downtime and maintain continuity in log collection and other HA functions. This ensures that the primary device continues to handle operations while the secondary devices are being upgraded, and once the secondary devices are updated, the primary device can be upgraded with minimal service disruption.

FortiAnalyzer allows you to export reports to a variety of formats, including CSV (comma-separated values) format, which is useful for situations that require further analysis of data in spreadsheet software.