HP Enterprise File Services WAN Accelerator manual Configuring Mapi Protocol Options

Control	Description
Overlapping Open	Enable Overlapping Open Optimization. This option is enabled by default. To prevent
	any compromise to data integrity, the HP EFS WAN Accelerator only optimizes data to
	which exclusive access is available (in other words, when locks are granted). When an
	oplock is not available the HP EFS WAN Accelerator does not perform application-level
	latency optimizations but still performs Scalable Data Referencing (SDR) and
	compression on the data as well as TCP optimizations. If you disable this feature, the HP
	EFS WAN Accelerator will still increase WAN performance, but not as effectively.
	Enabling this feature on applications that perform multiple opens of the same file to
	complete an operation will result in a performance improvement (for example, Computer
	Aided Design (CAD) applications):
	• Optimize the Following Extensions. Specify a list of extensions you want to optimize
	using overlapping opens. The default values are: doc, pdf, ppt, sldasm, slddrw,
	slddwg, sldprt, txt, vsd, xls.
	• Do Not Optimize the Following Extensions. Specify a list of extension you do not
	want to optimize using overlapping opens. The default values are: ldb, mdb.
	NOTE: If a remote user opens a file which is optimized using the overlapping opens
	feature and a second user opens the same file they might receive an error if the file fails
	to go through a v3.x HP EFS WAN Accelerator or if it does not go through an HP EFS
	WAN Accelerator (for example, certain applications that are sent over the LAN). If this
	occurs, you should disable overlapping opens for those applications.

Configuring

MAPI Protocol

Options

Optimizing MAPI Exchange in Out- of-Path Deployments

4.Click Apply to apply your settings to the running configuration. (Apply your settings to test a new configuration before saving them permanently.)

5.Click Save to save your settings permanently or click Reset to return the settings to their previous values.

You configure MAPI protocol support in the Optimization Service - Protocol: MAPI Page.

MAPI optimization is enabled by default. Typically, you only disable MAPI optimization to troubleshoot the system.

In out-of-path deployments, if you want to optimize MAPI Exchange by destination port, you must define a fixed-target, in-path rule that specifies the following ports on the client-side appliance:

‹Port 135. The Microsoft end-point mapper port

‹Port 7830. The HP EFS WAN Accelerator port used for Exchange traffic

‹Port 7840. The HP EFS WAN Accelerator port used for Exchange Directory NSPI traffic

For detailed information about defining in-path rules, see “To set an in-path rule” on page 26.

34 CONFIGURING THE HP EFS WAN ACCELERATOR