Thunderbolt vs 10GbE vs 2.5GbE for Video Editing NAS: Which Connection Do You Actually Need?

The NAS connection you choose determines whether your investment works for video editing or just sits there bottlenecking your workflow. Most editors spend weeks researching drive specs and bay counts, then buy the wrong switch. Or no switch at all. And wonder why 4K footage stutters. The answer is almost always connection speed. This article cuts through the confusion and gives you a straight answer based on your team size and the footage you actually shoot.

For a full overview covering hardware, setup, and workflow planning, see our complete NAS video editing guide.

The connection bottleneck nobody warns you about

NAS content is full of advice about how many bays to buy, which drives to fill them with, and whether RAID 5 or RAID 6 is right for your setup. What's rarely discussed is the connection between your Mac and the NAS. And that connection is often the actual bottleneck. You can buy a $4,000 QNAP loaded with IronWolf Pros and still struggle to play back a single ProRes 4K HQ timeline if your NAS is connected over standard Gigabit Ethernet. The drives can deliver 600 MB/s. The 1GbE connection can only handle 125 MB/s. Everything the drives can do becomes irrelevant.

This is the decision to get right first. Before you commit to a specific NAS model or drive configuration, understand what connection speed your workflow demands. And make sure your NAS, your Mac, and your network hardware all support it.

Side-by-side: Thunderbolt vs 10GbE vs 2.5GbE

Thunderbolt: the direct-attach advantage for Mac editors

Thunderbolt works differently from Ethernet. Instead of connecting your NAS to a network, Thunderbolt creates a direct point-to-point link between your Mac and the NAS. Bypassing any router or switch entirely. The result is a connection that can theoretically reach 5,000 MB/s (40 Gbps), though in practice the NAS drives are the ceiling. With a four-bay RAID 5 of IronWolf Pro drives, you'll see 400-600 MB/s. Add NVMe SSD cache and that jumps to 1,500-2,000 MB/s for cached reads.

That's fast enough to run multiple simultaneous ProRes 4K HQ streams from a single connection. More than most sole editors will ever need. The key benefit isn't raw speed; it's latency. Thunderbolt behaves like a directly-attached drive, which means it feels snappy and responsive in a way that Ethernet connections. Even fast ones. Don't quite replicate.

In Australia, the only NAS brand offering Thunderbolt is QNAP. The relevant models are the TVS-h674T (4-bay, Thunderbolt 4, available from Scorptec and PLE in the $2,200-$2,500 AUD range) and the TVS-h874T (8-bay, Thunderbolt 4, $3,500-$4,500 AUD). Both include at least one Thunderbolt 4 port alongside their standard Ethernet ports, so they can serve as both a direct-attach drive for the primary editor and a network share for other machines simultaneously.

For editors who came from Drobo. Where Thunderbolt was a core feature and the main reason many creatives chose it. QNAP's Thunderbolt line is the most direct replacement. See the Drobo alternatives guide for a full migration breakdown.

10GbE: the right answer when you have two or more editors

Thunderbolt is a point-to-point connection. It links one Mac to one NAS, and that's all. The moment you add a second editor who needs simultaneous access to the same NAS, Thunderbolt can't help. 10GbE is the answer for collaborative studios.

A 10GbE network can sustain 850-950 MB/s of real-world throughput. That's enough to support two editors cutting ProRes 4K HQ simultaneously, with bandwidth to spare. Each editor connects their Mac to a 10GbE switch, the NAS connects to the same switch, and everyone accesses footage over the network as if it were a shared drive.

The infrastructure cost in Australia breaks down like this:

Modern Apple Silicon Macs (M1 Pro, M1 Max, M2 Pro and above) include a 10GbE port built in on Mac Studio and Mac Pro configurations. If your editing machines are recent Mac Studios or Mac Pros, you may not need a Thunderbolt-to-10GbE adapter at all. Just a 10GbE switch and compatible NAS. For older Macs without built-in 10GbE, a Thunderbolt-to-10GbE adapter like the Sonnet Solo 10G bridges the gap cleanly.

On the NAS side, most current QNAP and Synology business-class units ship with 10GbE ports built in. The Synology DS1823xs+ (8-bay) and DS925+ (4-bay with optional 10GbE expansion card) are both 10GbE-capable. QNAP's h-series and x-series units include 10GbE as standard. You don't need to buy a premium NAS to get 10GbE. It's increasingly standard on mid-range models.

2.5GbE: when it's genuinely enough

2.5GbE delivers 250-280 MB/s of real-world throughput. That sounds modest compared to 10GbE, but it's actually sufficient for a meaningful range of workflows. And the cost is often zero, since 2.5GbE is built into most modern NAS units and many consumer routers.

If you're a sole editor working with H.264 or H.265 footage (DJI drones, Sony mirrorless, most hybrid cameras), 2.5GbE will comfortably handle your editing bandwidth. H.264 4K at high bitrate is typically 50-100 Mbps. Well under what 2.5GbE can deliver. Even BRAW (Blackmagic RAW) at standard quality settings runs 60-150 Mbps, which 2.5GbE handles without issue.

Where 2.5GbE falls short: ProRes 4K HQ. A single stream of ProRes 4K HQ runs at 1,485 Mbps (about 186 MB/s). That's within 2.5GbE's ceiling, but leaves almost no headroom. And real-world NAS throughput fluctuates. The moment you add any background activity (Time Machine, Plex transcoding, another user browsing files) your editing stream can drop frames. If you're regularly cutting ProRes 4K HQ, 10GbE or Thunderbolt is the better call.

The codec decision tree: what speed does your footage actually need?

These are the approximate sustained read rates required for smooth single-stream playback. Always add 20% headroom for real-world NAS variability and background activity.

Note on BRAW in Australia: Blackmagic RAW is disproportionately common in Australian production due to the strong Blackmagic Pocket Cinema Camera (BMPCC) user base among local indie filmmakers and commercial shooters. If you're shooting BRAW, you're in better shape than ProRes editors when it comes to bandwidth requirements. Even high-quality BRAW is relatively lean. 2.5GbE is viable for sole BRAW editors; 10GbE becomes important when you have multiple BRAW editors working simultaneously. For a deeper look at storage capacity planning by codec, see the NAS storage capacity planning guide.

Team size: the decision nobody talks about

The single vs. two-editor threshold is more important than any codec consideration. Here's why: Thunderbolt gives one Mac a private high-speed link to the NAS. The second editor who connects over the same Thunderbolt NAS's Ethernet port shares whatever bandwidth that port provides. Typically 2.5GbE or 1GbE on the secondary port. In practice, a Thunderbolt NAS serves one editor brilliantly and a second editor adequately. A third editor will start to feel the constraint.

The correct setup for two or more simultaneous editors is a 10GbE network where every machine. Each editing workstation and the NAS. Connects to a 10GbE switch. This gives each editor a dedicated 10GbE uplink, and the switch manages aggregate bandwidth. You're not all sharing a single connection; the switch handles concurrent sessions independently.

If you're a sole operator today but planning to bring in a second editor within 12 months, factor that into your NAS selection now. A NAS with Thunderbolt 4 and dual 10GbE ports (like the QNAP TVS-h674T or TVS-h874T) lets you start with Thunderbolt as a sole editor and transition to a 10GbE studio setup when you grow, without replacing the NAS. That's the most cost-efficient growth path for AU creative studios.

macOS Ventura and Sonoma: the SMB issue that catches editors off guard

There's a problem that affects Mac editors using network-connected NAS (10GbE or 2.5GbE) that almost no NAS content mentions: SMB signing on macOS Ventura and Sonoma.

Starting with macOS Ventura (13.0) and continuing through Sonoma, Apple enabled SMB signing by default. SMB is the file-sharing protocol Macs use to talk to NAS devices over a network. SMB signing adds a cryptographic signature to every packet to verify authenticity. Which is a good security measure in corporate environments, but causes noticeable performance degradation and occasional connection drops when connecting to NAS devices that don't fully support it, or where it's misconfigured.

Symptoms include: slow initial connection times, stuttering during playback that doesn't match the raw bandwidth available, and Finder frequently disconnecting from the NAS share. Editors often blame the NAS or the drives when the actual issue is the macOS SMB configuration.

The fix on QNAP: in QTS, navigate to Control Panel → Network & File Services → Win/Mac/NFS/WebDAV → Advanced Options and ensure SMB signing is set to Auto or Enabled to match macOS expectations. On Synology: Control Panel → File Services → SMB → Advanced → Enable SMB signing.

If you're still experiencing issues, check whether your macOS client requires signing by running smbutil statshares -a in Terminal. If signing is negotiating as "required" and your NAS doesn't support it consistently, a temporary workaround is to disable signing on the client via sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server SigningRequired -bool false. Though this reduces security and is not recommended for production environments. The better fix is ensuring your NAS firmware is up to date and SMB signing is properly configured on the NAS side.

This is a known community issue well-documented in QNAP and Synology user forums. If you're connecting a new NAS to a Mac running Ventura or Sonoma and performance is disappointing, check SMB signing before assuming the NAS or network is at fault.

What the right setup costs in Australia

The connection infrastructure adds meaningful cost to a NAS build. Here's a realistic AU cost breakdown for each scenario.

Australian pricing on 10GbE switches has improved significantly over the past two years. The QNAP QSW-308S (available from Scorptec and Mwave) is a solid unmanaged option at around $300 AUD that covers most small studio needs. For managed switching with VLAN support and link aggregation, the QSW-M408-4C at ~$450 AUD is worth the premium. Buy from AU retailers. Warranty claims on networking hardware are much simpler when the purchase is local, and Australian Consumer Law protections apply.

For a detailed breakdown of which drives to put in whichever NAS you choose, see the NAS drive compatibility guide for video editing. For understanding the storage architecture that sits behind this connection. Hot, warm, and cold tiers. See the hot vs cold storage guide.

Making the call: a decision framework

If you've just worked out you need a NAS but aren't sure where the external drive problem began, the why editors outgrow external drives guide covers the full journey from drive graveyard to NAS. Including what to expect from the transition and what to avoid.

Related reading: our NAS buyer's guide.

Our File Transfer Speed Estimator quantifies the real-world throughput difference between Thunderbolt, 10GbE, and 2.5GbE for large video file transfers, and our Network Upgrade ROI Calculator models whether the jump to 10GbE is justified for your workload.

Use our free NAS Sizing Wizard to get a personalised NAS recommendation.

Can I use Thunderbolt with a Synology NAS?

No. Synology does not manufacture any NAS with a Thunderbolt port. If you need Thunderbolt for direct-attach Mac editing, QNAP is the only NAS brand that offers it. Synology NAS units connect via Ethernet only (1GbE, 2.5GbE, or 10GbE depending on model). If you're set on Synology for other reasons, plan for 10GbE Ethernet as your high-speed connection.

Does my Mac support 10GbE?

It depends on the model. Mac Studio (M1 Ultra, M2 Ultra, M3 Ultra) and Mac Pro include 10GbE built in as a configurable option. MacBook Pro and MacBook Air do not include 10GbE. You'd need a Thunderbolt-to-10GbE adapter such as the Sonnet Solo 10G (~$220-$250 AUD). Mac mini does not include 10GbE natively but supports it via Thunderbolt adapter. Check Apple's specs page for your specific model, or look for "10 Gigabit Ethernet" or "10GbE" in the connectivity section.

My NAS connection seems slow even though I have 10GbE. What's wrong?

The most common causes on Mac are: (1) SMB signing misconfiguration between macOS Ventura/Sonoma and the NAS. Check and align the SMB signing setting on both sides; (2) the NAS drives are the bottleneck, not the network. Verify drive throughput in QTS or DSM Storage Manager; (3) jumbo frames (MTU 9000) not enabled on both the switch and NAS. This can limit throughput significantly on 10GbE; (4) the NAS is connected to a 1GbE port on the switch rather than a 10GbE port. Always verify end-to-end that every device in the chain is actually running at 10GbE, not just claiming to support it.

Is 2.5GbE good enough for editing 4K drone footage on a NAS?

Yes, in most cases. DJI drone footage in H.264 or H.265 is typically 60-200 Mbps, which 2.5GbE handles comfortably. Even high-bitrate drone footage at 200 Mbps is well within the ~2,000 Mbps available on a 2.5GbE connection. The exception is if you're shooting with a Blackmagic Pocket Cinema Camera in high-quality BRAW modes (Q0 or 1:1 ratio) where bitrates can exceed 400 Mbps. In those cases 10GbE is safer. Standard commercial drone work with DJI Mavic or Air series on 2.5GbE is not a constraint.

Can I use a standard home router instead of a dedicated 10GbE switch?

Not for 10GbE. Most home routers have Gigabit (1GbE) LAN ports, which max out at about 125 MB/s. Not enough for ProRes 4K editing. Some newer consumer routers include 2.5GbE LAN ports, which are fine for sole editors with appropriate codecs. For 10GbE, you need a dedicated 10GbE switch that connects your editing machines and NAS. The NAS and editing workstations plug into the 10GbE switch, and the switch connects to your router via its 1GbE or 2.5GbE uplink for internet access. The editing traffic stays on the fast local network; internet traffic goes through the router separately.

If you're still deciding on a brand, our Synology vs QNAP comparison guide breaks down which platform suits different use cases in Australia. For a direct comparison with direct-attached storage, see our guide to NAS vs DAS.

Will a Thunderbolt NAS work with Windows editing PCs?

Thunderbolt is supported on Windows PCs that include a Thunderbolt port (Thunderbolt 3 or 4). Most professional Windows workstations and many current-generation laptops include Thunderbolt. You can connect a QNAP Thunderbolt NAS to a Windows PC the same way you would a Mac. The advantage is less pronounced on Windows, however. Windows SMB implementation is generally more consistent than macOS, so 10GbE Ethernet often delivers comparable real-world performance without the premium of a Thunderbolt NAS. Thunderbolt on Windows makes the most sense for direct-attach speed requirements or where network infrastructure isn't yet in place.