Technical Tip: Add a bigger log disk to FortiGate VM in Azure

[JNDias]

Description	This article describes how to increase the disk log size of a FortiGate VM. The procedure will delete all existing logs from the FortiGate. Tested with version: v7.0.9 and v7.2.3
Scope	FortiGate Stand-alone FortiGate in azure.
Solution	This procedure will delete all existing logs from the FortiGate: 1) (Optional) Export any logs to archive. 2) Shut down the VM. 3) Azure: - Delete existing Data disk. - Add a new bigger data disk. - (optional) disable Host Caching. - Save. 4) Power on the VM. 5) (Optional) Check 'Serial console' for the VM in Azure. 6) Wait a few minutes as the new disk will be automatically formatted and will be ready to use. Before. (2) -  Shut down FortiGate VM: # execute shutdown (3) - Delete existing data disk: Create a new disk. 'Create and attach new disk'. Provide the Size and disable 'Host caching' and save. (4) - Power on: Power on the machine and look at the console. It will take a few min to format the new disk. After that, it will reboot and FortiGate will start using this disk for log. (Final) - Result. Optionally, reconfigure log settings to keep additional log days. - Check Disk logging' on Administration Guide. Additional related articles: How to download Logs from FortiGate GUI Backup logs in plaintext format avoid performing LZ4 decompression