Migrate to/from Icedrive (Twofish-Encrypted)

What is Icedrive?

Icedrive is the UK-based privacy-focused cloud storage launched in 2019 — notable for being the only major encrypted cloud to use the Twofish algorithm rather than the standard AES-256. Twofish was a finalist in the original AES competition and is considered cryptographically equivalent to or stronger than AES, just less common in production cloud services. Free accounts get 10 GB of storage with client-side encryption (but not zero-knowledge); paid Pro plans start at $4.99/mo for 150 GB (Pro I) and unlock the zero-knowledge Encrypted Folder feature. Icedrive's most distinctive offering is its lifetime plans: $389 one-time for 2 TB (Core), with stack-on-top expansions of $199 for additional 1 TB or $449 for additional 5 TB — perpetual storage purchases that compete with pCloud Lifetime on price.

Icedrive's WebDAV integration has one critical quirk that breaks most third-party tools on first try: the WebDAV password is NOT your account login password. Icedrive issues a separate WebDAV Access Key from the account settings (avatar → 2FA & Access → create Access Key) which serves as the authentication credential. Trying to authenticate with your normal Icedrive password against the WebDAV endpoint fails with a 401, regardless of whether 2FA is enabled. CloudsLinker connects via https://webdav.icedrive.io/ using your username and this dedicated Access Key — once configured, transfers run server-to-server with no special handling for Icedrive's Twofish encryption (which is applied transparently on Icedrive's side for non-Encrypted-Folder content).

Key features of Icedrive

Twofish encryption (rare)

Icedrive is the only major encrypted cloud using Twofish — an AES-finalist algorithm considered equivalent in security to AES-256, just less common in production. Used in the Encrypted Folder feature.

10 GB free, no zero-knowledge

Free plan includes 10 GB and basic client-side encryption — but zero-knowledge Encrypted Folder is paid-only. CloudsLinker works with both standard and Free folders via WebDAV (paid plans only).

Pro plans from $4.99/mo

Pro I: 150 GB / $4.99/mo (or $49.99/yr ≈ $4.17/mo). Unlocks zero-knowledge Encrypted Folder. WebDAV, sync client, priority support.

Lifetime: $389 for 2 TB

Lifetime Core 2 TB: $389 one-time. Add 1 TB stack: $199. Add 5 TB stack: $449. Among the cheapest perpetual cloud-storage offers — competitive with pCloud Lifetime.

WebDAV access key (NOT login password)

Icedrive's WebDAV requires a dedicated Access Key from account settings → 2FA & Access. Trying to use your login password fails — this is the most common configuration error.

No file size limit

Icedrive imposes no per-file size restrictions. Servers use the XFS filesystem (technical max ~100 TB per file). Files are limited only by your storage quota.

Why connect Icedrive to CloudsLinker

CloudsLinker connects to Icedrive via WebDAV at https://webdav.icedrive.io/ using your Icedrive username and a WebDAV Access Key (generated from Icedrive's account security settings — separate from your login password). Once connected, transfers run server-to-server using WebDAV PUT/GET. The connector reads and writes any folder visible via WebDAV; Encrypted Folder content is zero-knowledge and cannot be read by CloudsLinker (or any third-party tool) without the additional encryption pass — only standard folders are accessible.

What you can do with Icedrive on CloudsLinker

WebDAV-based migration

Migrate from Google Drive, OneDrive, Dropbox or S3 into Icedrive using the standard WebDAV API. Works on Pro plans only — Free accounts don't include WebDAV.

Runs on our servers

Icedrive transfers execute on CloudsLinker infrastructure. Your home or office bandwidth is irrelevant to job throughput.

Scheduled & incremental sync

Hourly / daily / weekly schedules with delta mode. Useful for keeping an Icedrive Lifetime archive synced from your active clouds (Google Drive, Dropbox).

Filter by folder, type, size

Migrate only specific Icedrive folders, exclude files larger than your destination's cap, or back up just photos and documents.

Common Icedrive transfer scenarios

Lifetime archive: $389 perpetual storage for sentimental data

Family photos, tax records, and wedding videos benefit from one-time-payment storage that doesn't depend on continuing subscriptions. Icedrive's Lifetime Core 2 TB at $389 (or stacked tiers up to 7 TB+ for under $1,000) provides perpetual encrypted storage. CloudsLinker schedules a one-shot migration from your existing Google Drive / iCloud Drive / OneDrive into Icedrive Lifetime.

Migrate from pCloud Lifetime → Icedrive Lifetime (or vice versa)

Both pCloud and Icedrive offer compelling lifetime plans, but their pricing tiers differ — sometimes you've outgrown one's structure. CloudsLinker migrates between Lifetime accounts preserving folder hierarchy and modification dates, in a single multi-TB job.

Backup primary cloud to Icedrive for UK / EU jurisdiction

Icedrive is registered in the UK with EU-region datacenters. For users wanting an off-US-CLOUD-Act backup, Icedrive sits alongside Proton Drive (Switzerland) and Filen (Germany) as European-jurisdiction encrypted destinations. Schedule a CloudsLinker nightly incremental from Google Drive into Icedrive.

Use Twofish encryption for non-AES requirements

Some compliance regimes prefer encryption diversity — using something other than AES-256 for at least one of multiple backups. Icedrive's Twofish-based Encrypted Folder satisfies this niche use case. CloudsLinker can write to Icedrive's standard folders; Encrypted Folder content requires the Icedrive client for the extra encryption layer.

Cold archive at Icedrive Lifetime, working data on commercial cloud

Run active working data on Google Drive / OneDrive (where collaboration matters), with cold projects archived to Icedrive Lifetime (where perpetual cost matters). CloudsLinker filters by modification date — files unmodified for 12+ months migrate to Icedrive, freeing up commercial-cloud quota.

How to connect Icedrive to CloudsLinker

Icedrive uses WebDAV with a dedicated Access Key — NOT your account login password. WebDAV access is paid-plan-only (Pro I or higher).

Before you start

Generate an Icedrive WebDAV Access Key:

Sign in to your Icedrive account at https://icedrive.net with your normal credentials.
Click your avatar (top-right) → 2FA & Access (or Account Settings → Security depending on UI version).
Under Access Keys (or WebDAV Access), click Create Access Key.
Enter a name (e.g. cloudslinker) and copy the generated key. Icedrive shows the Access Key once — save it immediately.

Connection steps

In CloudsLinker, click Add Cloud → choose Icedrive (or generic WebDAV).
Enter a display name (e.g. “Icedrive — lifetime archive”).
Enter the WebDAV URL: https://webdav.icedrive.io/ (universal — same for all Icedrive accounts).
Enter your Icedrive username (the email or username you use to log in).
Enter the Access Key from step 4 above as the password (NOT your account login password — using the wrong one fails with HTTP 401).
Click Confirm — CloudsLinker validates with a PROPFIND request and shows the connection ready.

Encrypted Folder note

CloudsLinker accesses standard Icedrive folders via WebDAV. The zero-knowledge Encrypted Folder feature requires the Icedrive client for the additional decryption layer — third-party tools cannot read this content. Use standard folders for any data CloudsLinker needs to access.

Revoke access

To revoke CloudsLinker’s Access Key later: https://icedrive.net → avatar → 2FA & Access → Access Keys → find the key → Delete. The key becomes immediately invalid; reconnect by generating a new one.

Icedrive upload & download limits you should know

Icedrive’s limits are unusually permissive on file size and bandwidth, with the catches being WebDAV-paid-only and the dedicated Access Key requirement:

Maximum file size: no hard limit (XFS filesystem max ~100 TB per file). Practical limit is your storage quota.
Storage tiers:
- Free: 10 GB (no WebDAV, no zero-knowledge encryption).
- Pro I: 150 GB / $4.99/mo (WebDAV unlocked, zero-knowledge available).
- Pro II / Pro III: larger storage tiers at higher monthly rates.
Lifetime tiers:
- Core 2 TB: $389 one-time.
- 1 TB stack: $199 added on top.
- 5 TB stack: $449 added on top.
Encryption: Twofish algorithm (rare in production cloud services); zero-knowledge Encrypted Folder available on paid plans.
WebDAV access: paid plans only. Free accounts cannot connect via WebDAV.
WebDAV password: dedicated Access Key generated from account security settings — NOT your login password.
Bandwidth: no published cap on uploads or downloads for paid plans.
Trash retention: 30 days on paid plans; configurable in account settings.
Version history: available on paid plans; specific retention varies by tier.
Datacenters: EU region (UK-registered company, EU hosting).
API rate limits: Icedrive throttles aggressive patterns; CloudsLinker handles back-off.

Sources: Icedrive: Plans & Pricing, Icedrive: Encryption documentation, Icedrive: Encryption process explained, Icedrive: Lifetime plans.

Icedrive + CloudsLinker — Frequently Asked Questions

Why does Icedrive WebDAV reject my normal password?

Because Icedrive's WebDAV endpoint requires a dedicated Access Key, not your account login password. This is unlike most cloud services where WebDAV uses the same credentials as the web app. Generate the Access Key from icedrive.net → avatar → 2FA & Access → Create Access Key, then use that as the password in CloudsLinker. The Access Key is independent of 2FA settings.

What's the WebDAV URL for Icedrive?

https://webdav.icedrive.io/ — universal endpoint for all Icedrive accounts. Combined with your Icedrive username and Access Key, this gives access to your standard (non-Encrypted-Folder) content.

Does CloudsLinker work with Icedrive's Encrypted Folder?

No — Encrypted Folder uses zero-knowledge Twofish encryption with keys held only on your client device. Third-party tools, including CloudsLinker, cannot read this content without the additional decryption pass that requires the Icedrive client. Encrypted Folder is paid-plan-only; standard folders work normally with CloudsLinker via WebDAV.

Is Twofish actually more secure than AES-256?

Both are considered cryptographically secure for the foreseeable future. Twofish was an AES finalist in 2000 and is mathematically related to AES (both are block ciphers). Practical security difference is negligible — Icedrive's Twofish is a marketing differentiation, not a measurable security advantage. Use Icedrive for the lifetime pricing; pick AES-256-based services (Proton, Filen) if Twofish is a deal-breaker for compliance.

What's the maximum file size?

Icedrive imposes no per-file size limit — servers use the XFS filesystem with technical max ~100 TB per file. Practical limit is your storage quota. CloudsLinker handles arbitrarily large files via chunked WebDAV upload.

Does WebDAV access work on the free plan?

No. Icedrive's WebDAV access is paid-plan-only (Pro I and above). Free accounts have web and sync-client access but not WebDAV — meaning CloudsLinker cannot connect to a free Icedrive account. Upgrade to Pro I ($4.99/mo) to enable third-party tool access.

Can I migrate Icedrive Lifetime data to another cloud?

Yes. Connect Icedrive (WebDAV with Access Key) and the destination cloud, then run a CloudsLinker one-shot copy. Folder hierarchy and modification dates are preserved. Useful if you've decided to move from Icedrive Lifetime to a different lifetime provider, or to an active subscription cloud.

How does Icedrive Lifetime compare to pCloud Lifetime?

Icedrive Core 2 TB: $389 one-time. pCloud Lifetime 2 TB: $399 one-time. Almost identical pricing. Differentiation: Icedrive uses Twofish + has WebDAV; pCloud uses AES-256 + has the Crypto folder add-on. Functional storage is similar; pick by encryption preference and ecosystem (Icedrive's UI is well-regarded; pCloud has more mature mobile apps).

Is Icedrive registered in the UK or EU?

Icedrive Limited is registered in the United Kingdom. Datacenters are in EU locations. Post-Brexit, UK is no longer in the EU GDPR area, though the UK Data Protection Act 2018 mirrors GDPR. For strict GDPR-EU-jurisdiction requirements, Filen (Germany) or Proton Drive (Switzerland) are tighter fits.

Is this an official Icedrive partnership?

No. CloudsLinker is a third-party tool that uses Icedrive's standard WebDAV API. Revoke access by deleting the Access Key from icedrive.net → avatar → 2FA & Access → Access Keys.

Icedrive transfer guides

Step-by-step walkthroughs for moving data to and from Icedrive.

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Conclusion

Icedrive's lifetime pricing ($389 for 2 TB perpetual) and Twofish-encrypted Pro tier make it a distinctive option in the encrypted-cloud category — particularly for users who want one-time-payment archive storage. CloudsLinker connects via WebDAV with the dedicated Access Key (not your login password), supporting Lifetime archives and ongoing scheduled backups equally. Generate the Access Key from Icedrive's account security settings and run your first migration in minutes.

Start Your Free Icedrive Transfer