Dropbox to NAS: Move Cold Files Off a Per-Seat Subscription

Q: "How are files organized on a NAS after moving from Dropbox?"

"Files land inside a shared folder on the NAS volume as a plain folder hierarchy, matching Dropbox's original folder structure. There is no special container to translate, since both sides use ordinary folders."

Q: "Does Dropbox's per-seat storage math matter once files are on the NAS?"

"No, and that is the point. Dropbox's Standard and Advanced team plans price storage by active license count, so an archive that stays in Dropbox keeps being billed as part of that pool. Once the files live on a NAS, they no longer count against any Dropbox license at all."

Q: "Is the folder structure preserved during the transfer?"

"Yes, all four methods keep nested folders intact. Files marked as online-only through Dropbox's Smart Sync (Selective Sync) feature must be set to available offline before a browser copy will work with the actual data rather than a placeholder."

Q: "Does CloudsLinker work with a home NAS behind a router?"

"Only if the NAS is reachable from the internet. CloudsLinker runs in the cloud and connects over SMB using the NAS's host address and port 445, so a home NAS needs a public IP, port forwarding, or a VPN. For a NAS that stays on the local network only, Synology Cloud Sync or QNAP's Hybrid Backup Sync is more practical, since the NAS pulls the files itself."

Q: "How does CloudsLinker connect to Dropbox?"

"CloudsLinker uses Dropbox's official OAuth sign-in. You approve access on Dropbox's authorization page, and no password is stored by CloudsLinker."

Q: "What happens if the NAS volume runs out of space?"

"The transfer stops when the volume is full and remaining files are skipped. Check free space against your Dropbox usage before starting, and expand the volume or move in batches if the archive is larger than what is currently available."

Q: "Will a file near Dropbox's 2 TB limit download correctly through a browser?"

"Not reliably. The same practical ceiling that makes browser uploads risky above roughly 375 GB applies to downloads. For anything approaching that size, use the Dropbox desktop app, Rclone, or CloudsLinker instead of a browser download."

Q: "Is the transfer secure?"

"Dropbox is accessed through OAuth authorization rather than a shared password, and the connection is encrypted in transit. SMB traffic on a local network is not encrypted by default, so when exposing a NAS to the internet for a cloud-based transfer, use a VPN or SMB encryption rather than opening port 445 to the public."

Move files from Dropbox to a NAS over SMB using four methods — browser, Synology/QNAP sync, Rclone, and CloudsLinker.

Introduction

A NAS turns storage into a fixed, one-time hardware cost, while Dropbox's team pricing keeps charging per license regardless of how much of the stored data is actually being used. Dropbox's Standard plan pools 3 TB for the first user plus 1 TB for every additional active license, and a meaningful share of that is often old project archives nobody opens anymore, quietly billed every month per seat. Dropbox's 2 TB single-file limit is generous, so the constraint here is not file size — it is that the storage scales with license count, not with how much data is still active. Moving that cold archive onto a NAS keeps the cost fixed and puts it on hardware you own outright. The methods below cover the move.

Method 1: Download and Copy over SMB
Method 2: NAS Sync App (Synology Cloud Sync, QNAP HBS)
Method 3: Command-Line Transfer with Rclone
Method 4: Cloud-to-Cloud Transfer with CloudsLinker
Quick Comparison
Practical Tips
Frequently Asked Questions

What is Dropbox?

Dropbox is a cross-platform file hosting service with a 2 TB single-file limit. Team plans price storage per active license: Standard pools 3 TB for the first user plus 1 TB per additional seat.

Per-seat team pricing: Storage pool scales with active license count, not usage.
Generous file-size ceiling: 2 TB per file across paid tiers.
Smart Sync: Keeps files as online-only placeholders until opened.
Broad integrations: Native connections to Slack, Zoom, and more.
Browser upload caveat: Files above roughly 375 GB risk timeouts in a browser.

What is a NAS (SMB)?

A NAS is a device with its own drives that shares files over your network through the SMB protocol. Brands include Synology, QNAP, Asustor, and TrueNAS.

One-time hardware cost: No per-seat licensing once purchased.
Local network speed: Gigabit access on the same network.
High file-size ceiling: Bound by the file system, commonly many terabytes.
Full ownership: Capacity and access rules are entirely yours to set.
Expandable: Add drives instead of paying for more per-seat storage.

Comparison: Dropbox vs NAS

Dropbox's team storage grows with the number of paid seats, whether or not the data attached to those seats is still active. A NAS's capacity is fixed by the drives installed and does not change with license count.

Feature	Dropbox	NAS (SMB)
Cost Model	Per-seat recurring subscription	One-time hardware plus drives
Max File Size	2 TB per file	Bound by file system, commonly many terabytes
Team Storage Scaling	3 TB (Standard, first user) + 1 TB per additional license	Set once by the drives you install
Access Speed	Limited by internet connection	Local gigabit on the LAN
Remote Access	Built in via Dropbox account	Requires setup (VPN, port forwarding)
Best Fit	Active team collaboration	Cold archives, self-hosting

Sources: Dropbox plans and pricing, Dropbox file size limits

Why Move From Dropbox to a NAS?

Self-hosting on a NAS appeals once a Dropbox team plan is charging for storage that mostly sits idle. Common reasons:

Stop paying per seat for cold data: Archived files no longer count toward a Dropbox license once they live on a NAS.
Fixed hardware cost: A NAS replaces an ongoing per-seat bill with a one-time purchase.
Local speed for large files: Working with archives over gigabit beats waiting on a download from Dropbox.
Data stays on your premises: Files live on hardware you control rather than a shared team plan.
Self-hosted services: Many NAS units run their own backup and media tools alongside file storage.

If a NAS fits the archive use case, the method depends on whether the NAS is reachable only on the local network or also from the internet.

Preparing to Transfer from Dropbox to a NAS

Confirm how your NAS is reachable. A device on the local network works with a browser copy, a NAS vendor sync app, or Rclone running on the NAS. A cloud-based transfer with CloudsLinker can only reach it with a public IP, port forwarding, or a VPN, so decide that before picking a method.

Create a destination shared folder on the NAS with an account that has write permission, and note the host IP address. Check that SMB is enabled in the NAS's network settings and that the volume has enough free space.

On the Dropbox side, check which folders are set to online-only under Smart Sync and mark the ones you are moving as available offline, or use Rclone or CloudsLinker, which read files directly from Dropbox's servers regardless of local sync state.

Method 1: Download and Copy over SMB

Step 1: Download Files from Dropbox

Open Dropbox on the web and sign in. Select the files or folders to move, then choose Download. Dropbox packages folders into a ZIP archive that must be extracted locally once the download finishes.

Downloading files from Dropbox web interface with a folder selected and the Download option visible

Step 2: Map the NAS Share and Copy the Files

In Windows File Explorer, right-click This PC, choose Map network drive, and enter \\NAS-IP-address\share with the NAS account credentials. On macOS, use Finder's Cmd+K and enter smb://NAS-IP-address instead. Drag the extracted files into the mapped location.

Windows File Explorer Map Network Drive dialog with a NAS share path entered, and the mapped drive appearing under This PC with files being dragged in

This is the most direct method and needs no extra software. Because the same data downloads and then re-uploads through your computer, a large Dropbox account is slow this way.

Method 2: NAS Sync App (Synology Cloud Sync, QNAP HBS)

Step 1: Install the Cloud Sync App on the NAS

Most NAS brands offer an app that connects directly to Dropbox. On Synology this is Cloud Sync; on QNAP it is Hybrid Backup Sync (HBS 3). Install it from the NAS package center and open it.

Synology Cloud Sync task configuration on DSM with Dropbox selected as the connected cloud service and a local shared folder chosen as the destination

Step 2: Authorize Dropbox and Set the Sync Direction

Sign in to Dropbox through the app's OAuth flow, choose the folders to pull, and set the sync direction to download remote changes only so files move onto the NAS. Pick a local shared folder as the target and start the task.

This is the most practical method for a NAS behind a home router, since the device pulls files itself without exposing it to the internet. The app runs on the NAS, so your computer does not need to stay on.

Method 3: Command-Line Transfer with Rclone

Step 1: Configure a Dropbox Remote

Rclone can run on the NAS itself or on a computer with the share mounted. Run rclone config, add a dropbox remote, and complete the OAuth flow. On the NAS, install Rclone through the package center or a container.

Rclone download and configuration page used to set up the Dropbox remote

Step 2: Copy to the NAS

Copy directly to a local NAS path, or to an SMB remote if Rclone runs elsewhere:

rclone copy dropbox:/Archive /volume1/archive --progress

rclone copy dropbox:/Projects nas-smb:/Projects --progress

The first command copies into a locally mounted NAS volume; the second writes to an SMB remote configured in Rclone. Add --dry-run to preview the result first.

Running Rclone on the NAS keeps the transfer off your personal computer entirely and supports scheduling through cron. The trade-off is comfort with the command line and the NAS package system.

Method 4: Cloud-to-Cloud Transfer with CloudsLinker

Transfer Without Using Your Computer

CloudsLinker moves files from Dropbox to a NAS server-side, so the transfer does not depend on your computer staying on. This method requires the NAS to be reachable over the internet — a public IP, port forwarding, or a VPN.

Step 1: Connect Dropbox

Sign in at app.cloudslinker.com, click Add Cloud, and select Dropbox. Approve access on Dropbox's official authorization page to link the account.

Authorize Dropbox in CloudsLinker via OAuth

Step 2: Connect the NAS over SMB

Click Add Cloud again and select NAS / SMB. Enter a display name, the NAS host IP address, a username and password with write access, and port 445.

CloudsLinker Add Cloud dialog for NAS/SMB with host IP, username, password, and port 445 fields

Step 3: Configure the Transfer

Open the Transfer section. Select Dropbox as the source and browse to the folders to move. On the destination side, select the NAS and choose the target shared folder.

Filters let you limit the move to certain file types or a date range, and Copy or Move mode controls whether the Dropbox originals remain.

CloudsLinker transfer configuration screen with Dropbox selected as the source folder tree, the NAS selected as the destination shared folder, and file-type and date filters above a Start Transfer button

Step 4: Start and Monitor the Transfer

Start the task and track it in the Task List, which shows transferred size, speed, and any skipped items. The transfer runs server-side between Dropbox and the NAS.

CloudsLinker Task List panel showing a transfer row with progress bar, transferred size, speed, and status

Comparing the Ways to Transfer From Dropbox to a NAS

Method	Ease of Use	Speed	Best For	Needs Public NAS	Skill Level
Download + SMB Copy	★★★★★	★★★☆☆	Small sets of files	No	Beginner
NAS Sync App	★★★★☆	★★★★☆	Home NAS behind a router	No	Intermediate
Rclone	★★☆☆☆	★★★★☆	Large archives, scheduling	No	Advanced
CloudsLinker	★★★★★	★★★★★	Internet-reachable NAS, hands-off	Yes	Beginner

For most home setups behind a router, a NAS sync app such as Synology Cloud Sync is the natural choice, since the device pulls files itself. Rclone suits technical users who want scheduling. If the NAS is already reachable over the internet, CloudsLinker moves files server-side without using your computer.

Practical Tips for Moving Dropbox to a NAS

Download online-only files first: Smart Sync placeholders contain no data until downloaded; mark folders as available offline before a manual copy.
Match the method to your network: A local-only NAS suits a vendor sync app or Rclone; only an internet-reachable NAS works with a cloud service.
Avoid opening port 445 to the public: Use a VPN or the NAS vendor's secure remote access instead of exposing raw SMB.
Watch the 375 GB threshold on very large files: Use the desktop app, Rclone, or CloudsLinker rather than a browser for files approaching that size.
Recalculate your Dropbox seat count after moving: If the archive was the reason for keeping extra licenses, revisit the plan size once the files are off Dropbox.
Keep a backup until verified: Keep the Dropbox copy or a second backup until you confirm the files are intact on the NAS.

Frequently Asked Questions

Files land inside a shared folder on the NAS volume as a plain folder hierarchy, matching Dropbox's original folder structure. There is no special container to translate, since both sides use ordinary folders.

No, and that is the point. Dropbox's Standard and Advanced team plans price storage by active license count, so an archive that stays in Dropbox keeps being billed as part of that pool. Once the files live on a NAS, they no longer count against any Dropbox license at all.

Yes, all four methods keep nested folders intact. Files marked as online-only through Dropbox's Smart Sync (Selective Sync) feature must be set to available offline before a browser copy will work with the actual data rather than a placeholder.

Only if the NAS is reachable from the internet. CloudsLinker runs in the cloud and connects over SMB using the NAS's host address and port 445, so a home NAS needs a public IP, port forwarding, or a VPN. For a NAS that stays on the local network only, Synology Cloud Sync or QNAP's Hybrid Backup Sync is more practical, since the NAS pulls the files itself.

CloudsLinker uses Dropbox's official OAuth sign-in. You approve access on Dropbox's authorization page, and no password is stored by CloudsLinker.

The transfer stops when the volume is full and remaining files are skipped. Check free space against your Dropbox usage before starting, and expand the volume or move in batches if the archive is larger than what is currently available.

Not reliably. The same practical ceiling that makes browser uploads risky above roughly 375 GB applies to downloads. For anything approaching that size, use the Dropbox desktop app, Rclone, or CloudsLinker instead of a browser download.

Dropbox is accessed through OAuth authorization rather than a shared password, and the connection is encrypted in transit. SMB traffic on a local network is not encrypted by default, so when exposing a NAS to the internet for a cloud-based transfer, use a VPN or SMB encryption rather than opening port 445 to the public.

Conclusion

The right method depends on your NAS's network setup and how much is moving. A browser download paired with a mapped network drive covers a small archive. Synology Cloud Sync or QNAP's Hybrid Backup Sync pulls directly from Dropbox and suits most home or office NAS setups behind a router. Rclone gives scriptable control for a large or scheduled migration. CloudsLinker moves an entire Dropbox account straight to the NAS without a computer staying on — but only if the NAS is reachable from the internet through a public IP, port forwarding, or a VPN. Choose based on where the NAS sits on your network.

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