FortiManager 3100G
Centralized management for up to 4,000–8,000 devices and VDOMs
- Devices / VDOMs
- 4,000–8,000
- Sustained log rate
- 150 logs/sec
- GB / day
- 10
The FortiManager 3100G manages up to 4,000–8,000 devices and VDOMs with a sustained log rate of 150 logs/sec and 10 GB/day of log throughput. Policy packages, provisioning templates, firmware rollout and a full change-approval workflow with revision history and rollback.
Four to eight thousand devices and VDOMs, with the log rate tripling to 150/sec and storage to 16x 4 TB — the first model built to carry meaningful logging alongside management. The range on the device limit is not a typo: effective capacity depends on how much of it is VDOMs rather than physical devices, which is exactly the sizing conversation to have before ordering.
Highlights
- Manages up to 4,000–8,000 devices and VDOMs
- Policy packages and shared object database across the estate
- Full change-approval workflow with revision history and rollback
- ADOMs give per-tenant administrative separation for service providers
Typical deployments
- Very large multinational estates
- Service providers with thousands of managed customer devices
- Deployments combining management and substantial log retention
What this includes
Fortinet publishes no throughput table for this product — it is licensed per user, endpoint, workload or account. What follows is capability and sizing, not benchmarks.
Capacity
Managed-device capacity counts devices and VDOMs together.
| Devices / VDOMs (maximum) | 4,000–8,000 |
|---|---|
| Sustained log rate (logs/sec) | 150 |
| GB / day | 10 |
Hardware
| Total interfaces | 2x GE RJ45, 2x 25GE SFP28 |
|---|---|
| Storage capacity | 16x 4 TB |
Sources
- Fortinet Product Matrix (July 2026) — retrieved 2026-09-01
Reproduced from Fortinet published documentation and subject to change without notice. Where a figure is load-bearing for your design, ask us to confirm it in writing before you order — we will.