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Client Management in Xsan

Jan 29, 2009

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Apple Training Series: Xsan 2 Administration: A Guide to Designing, Deploying, and Maintaining Xsan

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Three types of control can be applied on the client. The first is a SAN-level control in which the client is controlled as part of the SAN or is not physically connected via fiber. The second is volume-level control in which the client is part of the SAN but may not have mounted all of the available volumes or may have read-only access to the volume. The third level of control is file- and folder-level control. At this level, the client has the volume mounted with either read-only access or read/write access to the volume. However, user access to the data is controlled by various permission strategies.
You can move a client from one SAN to another on the same Fibre Channel fabric and private metadata Ethernet subnet.
Controlling user access to data on the SAN is made possible by implementing various permissions policies based on umask settings, POSIX permissions, and ACL configurations.
There are three basic home directory strategies: local homes, in which each user has a home folder on her local machine and no centralized management; network homes, in which a user has a home folder on a server that is brought down to the desktop on login; and mobile home folders, in which the user and administrator have the benefit of combining centralized management with local home performance.
Quotas are implemented based on UID and/or GUID. The IDs must be unique to each individual or group being managed. Hard and soft quotas can be assigned, and each user can monitor usage using the Xsan Quotas application.
You can mix Xsan metadata controllers with StorNext clients on many different platforms, not only Linux and Windows.

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