- By Robert Kite
- Jan 29, 2009
This chapter is from the book
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.