Constraints

Operations

• An existing OBS bucket cannot be changed to a parallel file system. For details about how to create a parallel file system, see Creating a Parallel File System.
• Custom domain names of parallel file systems cannot be configured on OBS Console. You can configure them using APIs by referring to Configuring a Custom Domain Name.

Functions

• Image processing currently cannot be used to process (such as downsize, resize, or watermark) images stored in parallel file systems.
• Server-side encryption is not supported.
• Cross-region replication is not supported.
• Versioning is not supported.
• Bucket inventory is not supported.
• Static website hosting is not supported.
• Configuration of default storage class for a parallel file system is not supported.
• Deep Archive storage is not supported.
• A parallel file system can be mounted to multiple Linux servers for concurrent reads, but this is not recommended for concurrent writes.

Performance

• A parallel file system provides a maximum bandwidth of 10 MB/s per TB by default.

Naming

• In a parallel file system, a file name cannot contain two consecutive slashes (//). For example, if you name a file as test//123.txt, an error will be reported.