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MaxAttach NAS 6000 Administration Guide
NFS Locks
NFS locks allows a process to have exclusive access to all or part of a file. File locking is
implemented both on the MaxAttach NAS 6000 and the client. When a file is locked, the
buffer cache is not used for that file, and each write request is immediately sent to the
server.
After a system failure, when the MaxAttach NAS 6000 is restarted, the MaxAttach NAS
6000 attempts to restore the file lock status to the previous condition. If the client fails, the
MaxAttach NAS 6000 releases the file lock. However, after the client restarts, it has a short
period of time to reclaim the file lock.
Figure #82
User & Group Mappings
In order to provide security for MaxAttach NAS 6000 files accessed from a UNIX
environment, the NFS service requires the system administrator to map UNIX user or
group accounts to their twin accounts on the MaxAttach NAS 6000. Users then have
equivalent access rights under UNIX as they have under Microsoft Windows.
User and Group Mappings lets you create maps between Windows and UNIX user and
group accounts even though the user and group names in both environments may not be
identical.
In addition to one-to-one mapping between Windows and UNIX user and group
accounts, User and Group Mappings permits one-to-many mapping. This lets you associate
multiple Windows accounts with a single UNIX account or vice-versa.
Chapter #3 - Overview - Microsoft Windows O/S Version 2.0
11/07/01 -- Revision 2.0.03A
NFS Locks Configuration Page Screen
Chapter #3 - Overview - Microsoft Windows O/S Version 2.0
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Services for UNIX
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