International Business Machines Corporation

Nimrod Sapir

Lior Chen

Daniel Gan-Levi

Dan Cohen

Shai M Koffman

ID management for a network attached storage system using layered ID mapping virtualization. When a connection request is received at a NAS server, it is determined whether the request is for a new user, and if so, user IDs are created for the new user. External user ID and filesystem user ID are mapped to the internal user ID, and user ID is verified at the NAS server kernel on subsequent logins with an external database. The user IDs are remapped for the changed user account, and updated mappings are transmitted from the NAS server to one or more NAS server kernel repositories.

ID management for a network attached storage system

A computer-implemented method for data mirroring for network attached storage includes duplicating an identity mapping database on a second NAS server and creating a queue of updated data files containing updated elements since a prior synchronization. Data files containing the updated elements are transmitted from the first NAS server to the second NAS server. An updated copy of the identity mapping database from the first NAS server is stored at the second NAS server. The updated data files and metadata information from the first NAS server are written to the second NAS server. The permission entries of the transmitted data files from the first NAS server are translated using the identity mapping databases of the first and second NAS servers, such that the permission entries reflect the local ID mapping database on the second NAS server.

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Rehovot, Israel

Nimrod Sapir