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What You’ve Learned

  • 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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