Dell PowerStore Configuring Multiprotocol File Sharing

A multiprotocol environment requires the following types of user mappings:

• To access a file system configured with a UNIX access policy, a Windows username must map to a corresponding UNIX username. In addition, the storage system must be able to resolve that UNIX username to a UID.
• A UNIX username must map to a corresponding Windows username when using NFS to access a file system configured with a Windows access policy.
• A UNIX user does not have to map to a corresponding Windows user when using NFS to access a file system that is configured with a UNIX or native access policy.

The system automatically creates a mapping between a Windows and a UNIX user when the same username is defined in the UNIX Directory Service (UDS) or local password file, and Windows Active Directory (AD). UNIX usernames are case-sensitive. For example, Windows User1 automatically maps to UNIX User1. If the usernames are different, you can upload a customized user-mapping file (ntxmap) to create custom mapping rules. These rules can be bi-directional, or they can map Windows users to UNIX users or UNIX users to Windows users. The rules support wildcards and substitutions.

To allow users with unmapped usernames to access a file system, you can set automatic user mapping (which enables quotas). Another option is to set default UNIX and default Windows accounts for the NAS server.