File sharing

When files are created and accessed from a Windows® client, all the security features of Windows are available and enforced. When files are created and accessed from UNIX-based clients, all the security features of UNIX® are available and enforced. When files created by a UNIX-based client are accessed by a Windows client, access is controlled using only the semantics and permissions of "other." Similarly, when files created by a Windows-based client are accessed by a UNIX-based client, access is controlled using only the semantics and permissions of "everyone."

Restriction: You can change the security settings of a system object (such as a file or directory) only from a client running the same platform as the client that originally created the object. For example, if you create a file on a UNIX client, you can change that file's security settings only from a UNIX client, not from a Windows client. Instead, from a Windows client, you can create a new file by copying the original file.

File sharing in the SAN File System is classified as either homogenous or heterogeneous. File sharing is positioned primarily for homogenous environments. The ability to share files heterogeneously is recommended for read-only—that is, create files on one platform, and provide read-only access on the other platform. Therefore, set up filesets such that they have a primary allegiance to a single operating system. This means, for example, that certain filesets have files created in them only by Windows clients, and other filesets have files created in them only by UNIX clients.

Parent topic: Clients

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IBM TotalStorage SAN File System v2.2