DDN EXAScaler Cloud vs Tahoe-LAFS
DDN EXAScaler Cloud
ddn.comTahoe-LAFS
tahoe-lafs.orgSide by side
| Figure | DDN EXAScaler Cloud | Tahoe-LAFS |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 1 |
| Spec score · Distributed File System Software | 7.4 (#19) | 8.3 (#6) |
| Founded | 1998 | 2007 |
| Intended users | DDN describes the product as serving enterprises, service providers, research facilities, and government agencies with data-intensive workloads. | The project describes a typical deployment where each user runs a gateway on their own machine and connects it to storage servers on other computers. |
| Protocols | The product sheet lists POSIX, NFS, SMB, and S3 connectivity. | The documentation describes HTTP(S) and SFTP access through a gateway, and storage-server communication over HTTPS or Foolscap. |
| Purpose | EXAScaler Cloud is a parallel file system for AI, HPC, analytics, and other data-intensive cloud workloads. | Tahoe-LAFS is a decentralized file storage system that encrypts files, splits them into shares, and distributes those shares across storage servers. |
| Support | The product sheet describes premium and managed services support from experts who specialize in cloud-related challenges. | The installation guide directs users who need help with deployment to the tahoe-dev mailing list or Libera.Chat IRC. |
Plans
In their own words
DDN EXAScaler Cloud
DDN EXAScaler Cloud has no write-up on Specifiction yet; its figures are above.
Tahoe-LAFS
Tahoe-LAFS is free, open-source software for storing files across multiple servers. Before upload, a client encrypts each file with a unique key. Erasure coding distributes each file as shares, allowing recovery when some storage servers fail; the documented default uses 10 shares across at least 7 servers and can recover from any 3. A gateway checks integrity and ignores corrupted shares. Files can be immutable or mutable, with read-only or read-write access for mutable files and directories. The gateway gives access through HTTP(S) and SFTP, and a REST-style Web API supports programmatic operations. Users can run a gateway or operate a full grid of storage nodes and an introducer. Installation is documented for Windows, macOS, Linux, and BSD. The software is available under GNU GPL version 2 or later, or the Transitive Grace Period Public Licence version 1.0 or later. It is free at free. The public test grid is for experimentation, not reliable or large-scale storage.