Which Version of SMB Protocol Does CFS Support?

CFS currently supports the main functions of SMB 1, SMB 2 and SMB 3 versions.

Which Operating Systems Does SMB Support?

Because SMB 1 has many problems in terms of security and performance, it is recommended that users use SMB 2 and above version, that is, Windows Vista and later operating system clients. Please refer to the following table for the specific support of SMB protocol in each Windows version:

What Features are not Supported by CFS SMB?

Currently CFS SMB does not support the following features:

• Cross-protocol access is not supported, that is, users are not supported to use NFS and SMB to access the same file system.
• File byte range locks and client caching based on Oplocks and Lease are not supported.
• File ACL control is not supported.
• File asynchronous IO is not supported.
• SMB 3 advanced features such as multi-channel, Persistent File Handle, SMB Direct, and SMB Directory Leasing are not supported.
• IOCTL/FSCTL operations such as Sparse files, file compression, network card status query, and Reparse Point, etc. are not supported.

Why do Some Editors in Windows Explorer Lag in Updating File Attributes?

Take notepad as an example: After the user opens the notepad and writes the content, it may be found that the size of the file has not been updated in time. Then, right-click to view the general properties or refresh in the Windows Explorer to update the display size.

This problem is caused by the update of the attributes displayed by the Explorer in the process of file modification by some editors (such as Notepad) under Windows. Then, the attributes of the file itself have been updated, but the Explorer has not updated the display, so It has no effect on normal use. For some file editing software such as WordPad, this problem does not exist.