HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 Management Console user guide (AG421-96002, March 2007)

34 CONFIGURING THE HP EFS WAN ACCELERATOR
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.
Configuring
MAPI Protocol
Options
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.
Optimizing MAPI
Exchange in Out-
of-Path
Deployments
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.
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.
Control Description