Quantum 3.5 manual Attribute Flush Time parameters control, Length of time attributes are held on

	Chapter 4 Configuring StorNext
	Windows Configuration Utilities
Field / Button	Description
Seconds for Shared/	The Attribute Flush Time parameters control
Non-Shared	the length of time attributes are held on the
	client before they are flushed back to the FSM
	(unless there is an explicit attribute request
	from the FSM).
	The default values are 30 seconds for non-
	shared files (Attribute Flush Time, non
	shared), and 2 seconds for shared files
	(Attribute Flush Time, shared).
	Setting these parameters lower will greatly
	increase the amount of metadata traffic
	between clients and the FSM. However, in
	circumstances where files are frequently
	shared on the SAN, setting the Attribute Flush
	Time Shared can result in other clients seeing
	size updates more frequently if a file is being
	written on one client and read on another.
	A value of zero is invalid, and will result in
	using the default setting.
Delay Atime Updates	When this box is checked, the file system
	delays Atime (access time) updates when
	reading a file to the time when the file is
	closed. This cuts down on FSM metadata
	updates at the expense of coherency.
Low Water Mark	Metadata Caches contain non-data
	information such as file names, sizes, update
High Water Mark
	times, etc.
Max. Entries	Tuning the low and high water marks and the
Purge Period	frequency of purge passes can help certain
(Seconds)	large mix applications.
Minimum Directory	This option sets the size of the directory cache.
Cache Size	Directory entries are cached on the client to
	reduce client-FSM communications during
	directory reads.
	The default value is 10 MB.

StorNext 3.5 Installation Guide 82