Quantum 3.5 manual Advanced Cache Options

	Chapter 4 Configuring StorNext
	Windows Configuration Utilities
Field / Button	Description
Hard Reconnect	When this box is checked, the file system
	attempts to reconnect to the FSM forever. If
	this option is not enabled, the file system
	attempts to reconnect to the FSM for the
	number of times specified at the Mount
	Retransmit Limit field before failing the
	request.
	The default value is off.
Token Hold Seconds	The QOS Token Hold Time parameter is
	applicable only when using the StorNext
	Quality of Service (QOS) feature for real-time
	IO.
	This parameter determines the number of
	seconds a client stripe group holds on to a
	non-realtime I/O token during periods of
	inactivity. If no I/O is performed on a stripe
	group within the specified number of
	seconds, the token is released back to the FSM.
	The default value is 60 seconds. The
	parameter should be specified in five-second
	increments; if the parameter is not a multiple
	of five, it will be rounded up automatically.

Advanced Cache Options

The Data Buffer Cache keeps the file system data in memory on the local computer to speed up performance for small I/O operations.

The Advanced Cache Options tab (figure 40) displays performance values that control how many file system lookup names are kept in memory.

Caution: Changing the values on the Advanced Cache Options tab can affect system performance and stability. Do not change cache parameters unless instructed to do so by the Quantum Technical Assistance Center.

StorNext 3.5 Installation Guide 79