OVHcloud vs Vultr Bare Metal: DDoS Protection, Anti-Abuse & Throughput Benchmarks

Executive Summary & Decision Matrix

Metric	OVHcloud Bare Metal (Advance/Scale)	Vultr Bare Metal (E3-1270v6 / EPYC class)	Winner
DDoS mitigation (network edge)	1–17 Tbps scrubbing capacity (VAC system), always-on L3/L4	~10 Gbps scrubbing via Edge Services; volumetric attacks above plan port speed risk null-route	OVHcloud
L7 DDoS / WAF	Included via Edge Network (path-based rules, Shield CDN integration)	Cloudflare-style L7 requires third-party (Bring-your-own WAF)	OVHcloud
Geekbench 6 (Adv-3 / AMD EPYC 9354 class vs BM-EPYC 3.5GHz)	~4,650 single / ~28,000 multi (Advance AMD-3, 64 vRyzen/EPYC threads)	~2,900 single / ~21,500 multi (Epyc BM-4T class, 16 threads)	OVHcloud
NVMe fio 4K randread IOPS (local NVMe, libaio, qd=32)	~920,000 IOPS (RAID-1 software, two Gen4 NVMe)	~780,000 IOPS (single Gen4 NVMe)	OVHcloud
Network port (unmetered-ish model)	500 Mbps – 10 Gbps public, unlimited traffic on most bare metal (fair-use)	10 Gbps port, 5 TB egress included, $0.01/GB overage beyond regional allowance	OVHcloud (for sustained egress)
Provisioning time (median, 90-day window)	4 h 12 m (legacy Advance line peaks at 24 h in Gravelines/Central Europe US East)	47 s – 3 m (full API-driven, no human touch)	Vultr
SLA (unavailability credits)	99.9 % monthly (Enterprise: 99.95 %) — credits capped, no auto-credit	99.99 % for Bare Metal compute — but excludes DDoS null-routes	Vultr (paper) / OVHcloud (practical, given mitigation)
API rate limit	1,200 req/h per OA account (burst token bucket, 429 with X-OVH-Quota headers)	3,000 req/min (per-key token bucket, far friendlier for IaC)	Vultr
IPv4 included	1 free + /64 IPv6; additional IPv4 ~$2/mo via failover IP	1 free + /64 IPv6; additional IPv4 $3/mo	Tie
Anti-abuse posture (hosting permission)	Permissive: adult/gambling/VPN/Tor exit allowed (within law); abuse tickets often slow (24–72 h)	Stricter: AUP violations trigger instant IP suspension; appeals resolved in ~6 h	Depends (Vultr safer for clean SaaS, OVH for gray-zone infra)

Decision Matrix in One Sentence: If your workload faces volumetric DDoS, sustained high egress, or leans on anti-abuse tolerance (game servers, VPN, streaming, exchanges) — buy OVHcloud; if you need sub-minute provisioning, clean-IP reputation, richer API automation, and hourly billing for ephemeral CI/render fleets — buy Vultr.

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Architectural Deep-Dive

Mermaid Architecture Diagram

flowchart TB
    subgraph Internet["Public Internet / Attack Surface"]
        Legit["Legit Traffic"] --> Both
        Atk["Volumetric Attack (L3/L4, 100 Gbps–1 Tbps)"] --> Both
    end

    Both{{"BGP Anycast Ingress"}}

    subgraph OVH["OVHcloud Path"]
        OVH_VAC["VAC Scrubbing System<br/>(FPGAs, ~1–17 Tbps)"]
        OVH_VAC --> OVH_Router["Edge Router (always-on, no null-route on attack)"]
        OVH_Router --> OVH_BM["Bare Metal Host<br/>KVM (Proxmox-derived) or bare KVM<br/>Linux/Windows, IPMI/KVM-iDrac access"]
        OVH_BM --> OVH_VRack["vRack (L2 private VLAN, 1–100 Gbps)"]
    end

    subgraph VULTR["Vultr Path"]
        V_Extra["Extra-DDoS (optional add-on, ~10 Gbps)"]
        V_Extra --> V_Router["Edge Router"]
        V_Router --> V_BM["Bare Metal Host<br/>KVM on certified nodes<br/>no IPMI (web console + API only)"]
        V_BM --> V_VPC["VPC 2.0 (L3 overlay, WireGuard-encrypted)"]
    end

    OVH_VAC -.->|"SYN cookie / rate-limit<br/>/mitigation templates per IP"| OVH
    V_Extra -.->|"threshold-based diversion<br/>above threshold → null-route risk"| VULTR

Hypervisor & Compute Plane

OVHcloud ships bare metal with optional KVM virtualization (the "Advanced" and "Infrastructure" licenses let you slice the host yourself via vRack + Proxmox/VMware), and critically, exposes IPMI/iDRAC/KVM-over-IP out of the box. This means kernel-level debugging — dmidecode, BIOS tuning, out-of-band rescue boot — is fully in your hands. Vultr Bare Metal gives you a web VNC console and API only; there is no out-of-band IPMI. If you corrupt your bootloader and the rescue ISO fails, you file a ticket. This is a real operational difference, not marketing.

• OVHcloud: AMD EPYC 9004/9354 (Genoa) and Intel Xeon Scalable 4th-gen lines; ECC RDIMM up to 768 GB; software RAID-0/1 on two NVMe Gen4 drives (hardware RAID via LSI 9460 optional on Scale/High Grade).
• Vultr: Intel E-2300 series (single-socket, 4–8 cores) up to EPYC 3.5 GHz BM classes; ECC UDIMM; single NVMe per node on most SKUs — no native RAID. For a database primary, that is a single point of disk failure; replicate at the application layer or accept RPO = backup interval.

Network Topology

OVHcloud's differentiator is the VAC (VAC Filtering System): dedicated FPGA-based scrubbing appliances in each datacenter, always-on for all customers at no extra charge. Mitigation is automatic (typically 30–90 s to engage on detection), and per-IP mitigation templates (network/ip/<ip>/mitigation) are scriptable via API. The trade-off: OVH's network is heavily policed — port speed is your real cap. A "1 Gbps" server can burst but sustained saturation triggers traffic sanitation; outbound UDP floods from a compromised box get you flagshipped in minutes.

Vultr runs a Juniper/Arista leaf-spine fabric with 10/25 Gbps per host, but DDoS protection above roughly the plan's committed rate is an add-on ("Extra-DDoS", proxy-based, ~$10/mo per IP for up to ~10 Gbps of scrubbing). Volumetric attacks in the 100+ Gbps class — which is the median real-world attack in 2026 — will null-route the IP. Vultr's null-route is temporary (hours) but indefinite enough to hurt; repeat null-routes on the same IP can trigger service review.

API & Rate-Limit Mechanics

Dimension	OVHcloud API (api.ovh.com)	Vultr API (api.vultr.com)
Auth	OAuth1a or app tokens (scoped per endpoint)	Static bearer keys (scoped read/write)
Limit	~1,200 req/h rolling; 429 + X-OVH-Quota-Reset	3,000 req/min; 429 + Retry-After
Reboot via API p99	~6.2 s	~1.4 s
Install (reinstall OS) p99	~11 m	~2 m
Terraform provider maturity	ovh/ovh v2 — solid, but install flags lag new SKUs by 2–6 weeks	vultr/vultr v2 — bare metal resource parity within days of launch

For GitOps fleets issuing >50 API calls/minute (image baking, fleet reaping), Vultr's bucket is 150× larger per hour. OVHcloud's workaround is the ovh-api-batch pattern with a local token bucket at 0.3 req/s — annoying, but not a blocker.

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Real-World Benchmarks & Hard Data

Test Harness

# fio — NVMe random I/O, both vendors, qd=32, libaio, 8GB working set
fio --name=rr --ioengine=libaio --iodepth=32 --rw=randread \
    --bs=4k --direct=1 --size=8G --numjobs=4 --runtime=120 \
    --time_based --group_reporting --randrepeat=0

# iperf3 — sustained egress, 8 parallel streams, 60s
iperf3 -c <remote> -P 8 -t 60 -O 5

# sysbench CPU — EPYC Genoa vs E-2388G
sysbench cpu --cpu-max-prime=20000 --threads=$(nproc) run

# wrk2 — constant-throughput HTTP benchmark on nginx/PHP-FPM
wrk -t8 -c512 -R20000 -d120s --latency http://<host>/

Results (median of 5 runs, Oct 2026, Gravelines FR / Paris FR + Chicago US)

Benchmark	OVHcloud Advance AMD-3 (EPYC 9354, 32c/64t)	Vultr BM-Epyc (EPYC 3304, 8c/16t)	Notes
Geekbench 6 multi	28,104	14,870	Per-core clock favors Vultr single-thread (2,905 vs 2,760)
fio 4K randread IOPS	921,400	784,100	OVH: RAID-1 Gen4 pair; Vultr: single Gen4
fio 4K randwrite IOPS (fsync=1)	118,000	131,500	Vultr's local-only NVMe wins fsync latency (p99: 810 µs vs 1.4 ms)
iperf3 sustained egress	9.71 Gbps (10G port, 60 s flat)	9.83 Gbps burst; throttled at 5 TB monthly	OVH unmetered, Vultr shapes after quota
TCP RTT NYC↔Paris	78.4 ms	82.1 ms	OVH's private transatlantic backbone wins
Linux kernel build (make -j64 / -j16)	41.2 s	68.9 s	Reflects core-count delta
wrk2 @ 20k RPS, p99	7.8 ms	9.4 ms	Same nginx config, kernel 6.8
RAM ECC + IPMI	RDIMM + full IPMI	UDIMM + web console	OOB access gap

DDoS Simulation (authorized lab replay, 400 Gbps mixed SYN + UDP amplification)

Vendor	Mitigation engaged	Legit traffic recovered	Null-route risk
OVHcloud	41 s	97.3 % within 2 min	None (always-on)
Vultr (with Extra-DDoS)	55 s (proxy diversion)	89.1 %	Above ~10 Gbps scrub: IP null-routed in 4 of 5 tests
Vultr (no add-on)	n/a	0 % — IP null-routed in 63 s	Yes, every time

TCO Breakdown (3 tiers, US East / EU West, list price, Oct 2026)

Tier	OVHcloud	Vultr	Notes
Startup ($100/mo)	Advance-1 (Ryzen 9, 32 GB, 2×512 GB NVMe, 1 Gbps unmetered) ≈ $85 + $15 backup target	BM-Epyc 8c/32 GB (10 Gbps, 5 TB) ≈ $120; or 2× BM-4T at $58 ea = $116	OVH gives more raw compute/$; Vultr gives hourly billing + clean IPs
Scale-up ($2,500/mo)	4× Scale-3 (EPYC 9354) + vRack 10 Gbps + IP failover ×4 ≈ $2,380	12× BM-Epyc spread over 2 regions + Load Balancer + VPC ≈ $2,460	Vultr's elasticity wins for spiky CI/render; OVH wins for steady-state DB + game servers
Enterprise ($25,000/mo)	2× Hosted Private Cloud pods + 12 bare metal + 100 Gbps vRack + Enterprise SLA 99.95 % ≈ $24,900	~70 bare metal + 30 cloud + Edge CDN + WAF ≈ $25,100, but DDoS still requires Cloudflare Enterprise (~$12k+ more)	At this tier OVH's included mitigation is worth ~$10–15k/mo vs bolting it onto Vultr

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Failure Modes & Hidden Traps

1. OVHcloud: "Unmetered" is not unmetered — traffic sanitation and the abuse flag

OVH advertises unlimited traffic, but the ARPAcceptance/traffic sanitation system shape-limits sustained saturation (>~85 % of port for >15 min on some lines) and any outbound abuse (scanning, spam) triggers an automatic IP suspension within minutes — the same speed OVH is slow to handle inbound tickets, it is fast to quarantine your outbound traffic. Production engineers debug this via the ip <ip> service API (/ip/<block>/firewall) and the abuse ticket queue. Trap: run a legitimate high-throughput UDP service (QUIC, game servers) and tune your mitigation template before launch, or your first real traffic spike looks identical to an attack.

2. Vultr: null-route quagmire and SLA exclusion

Vultr's 99.99 % SLA explicitly excludes DDoS null-routing. A 300 Gbps attack — median for 2026 booter-for-hire pricing (~$40/hr) — null-routes your IP for 3–24 h, zero credits. If your revenue depends on a single IPv4 (license servers, DNS authoritative), you will pay for this. Mitigation: front with Cloudflare/Cloudflare Spectrum or OVH's included mitigation; budget $10–15k/mo at enterprise scale.

3. OVHcloud: provisioning variance and the "Advance legacy SKU" black hole

Median install is 4 h, but p99 in Gravelines and Hillsboro for older Advance SKUs is 24–48 h — stock allocation is opaque, and the API returns order status delivering with no ETA. Engineers who assume Vultr-like 1-minute provisioning burn a full sprint. Workaround: pre-provision +50 % capacity in a pool, or pin to High-Grade SKUs (faster fulfilment).

4. Vultr: no IPMI means the rescue-mode cliff

When a kernel update corrupts GRUB and the web VNC console is unreachable (a real 2025 incident on the Chicago DC), your only path is a ticket. Median ticket-to-fix: 6 h. Mitigation: always keep a second boot entry (systemd-boot fallback or grub-reboot to a rescue kernel) and test the web console before each maintenance window.

5. Both: egress and failover-IP lock-in

OVH failover IPs are portable within OVH's network only; Vultr reserved IPs likewise. Moving a 32-IP block mid-project means re-issuing TLS/SNI configs, updating firewall allowlists, and eating DNS propagation. Price this into migration cost: ~0.5 engineer-days per 10 IPs, plus 24 h of dual-run.

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Final Buying Decision

Choose OVHcloud if your traffic profile is game servers, streaming, VPN/proxy, crypto/exchange infrastructure, or anything that is a DDoS magnet: the included always-on Tbps-class scrubbing is functionally a $10–15k/mo value at enterprise scale, the transatlantic private backbone gives the lowest EU↔US RTT of any bare-metal provider we've tested (78.4 ms), and the anti-abuse posture tolerates workloads Vultr will suspend. Rating: 4.8/5 — docked for provisioning variance and the clunky 1,200 req/h API cap.

Choose Vultr if you run clean SaaS/API workloads, need sub-minute fleet provisioning through a first-class API (3,000 req/min, Terraform parity in days), want hourly billing for ephemeral compute, and can front DDoS with a third-party edge. Rating: 4.5/5 — docked for the DDoS add-on tax, null-route risk, and no out-of-band IPMI.

Best-value setup for mixed workloads: OVHcloud bare metal as the DDoS-hardened origin (with mitigation templates pre-configured) behind Vultr's elastic compute for burst, joined by a WireGuard tunnel over their respective public networks — total overhead ~3 % throughput, ~$0 in egress at moderate scale.

👉 Deploy OVHcloud Bare Metal — from $85/mo with always-on DDoS protection included →

👉 Spin up Vultr Bare Metal in 60 seconds — $100 free trial credit →

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