: Indicates this is a 64-bit FortiGate image optimized for the Linux KVM platform. v7.2.3 : The major and minor firmware version.

: Redesigned system and security event logs featuring a "Summary" tab for quick timeline visualizations. Installation and Upgrade Procedures

is the specific virtual disk image file used to deploy or upgrade a 64-bit FortiGate Virtual Machine (VM) running FortiOS version 7.2.3 (Build 1262) on a KVM (Kernel-based Virtual Machine) hypervisor. Core Specifications and File Identity

The filename follows a strict Fortinet naming convention that identifies its purpose: