FG-3800G FortiGate 3800G 3RU NGFW Dual 2+2 Redundant AC PSU

FG-3800G Exact Hardware Variant

FG-3800G is a FortiGate 3800G Series physical next-generation firewall. Fortinet documents the family with four 400GE, six 200GE, eighteen 50GE and two 10GE interface positions, a 3RU form factor and four power-supply positions. The FG-3800G order must retain its exact storage and power suffixes because those differences change site acceptance.

base appliance and external log design

FG-3800G is the base 3800G appliance identity. Because it lacks the 3801G storage suffix, the acceptance plan must not assume the local disk configuration published for 3801G. Decide where security logs, reports and long-term evidence will be retained, validate the FortiAnalyzer or other approved destination, and test loss-of-collector alarms before production.

Variant-specific acceptance

Inventory four power-supply positions, high-speed optics, breakout cables and both management paths. Confirm port naming in FortiOS, log forwarding, HA heartbeat design and policy rollback without borrowing a 3801G storage statement.

Common high-speed interface plan

Map every QSFP-DD, QSFP56, SFP56 and 10GE connection to its optic or cable PID, peer port, lane mode, zone and redundancy role. Validate supported FortiOS, transceiver compatibility, airflow, rack loading, management access, HA synchronization and a documented rollback before carrying production traffic.

Related 3800G variants

• FG-3801G: storage-bearing appliance acceptance
• FG-3800G-DC: telecom DC power and grounding
• FG-3801G-DC: combined DC and local-storage recovery

Official sources: FortiGate 3800G Series data sheet, FortiGate 3800G Series quick-start guide and Fortinet 3800G/3801G fast-path architecture.