File-Based Write Filter

Using the File-Based Write Filter command line utility

The FBWF command line utility enables you to issue a set of commands to the FBWF driver, report the status of each protected overlay, and report the format of the overall FBWF configurations.

To use the FBWF command line utility, follow these steps:

1.Select Start > Run.

2.Type CMD and click OK.

3.Enter fbwfmgr c: <commands> at the prompt.

The following table describes the supported commands for the FBWF utility.

Command

Description

 

 

/disable

Disables the write filter on the next restart.

 

 

/enable

Enables the write filter on the next restart.

 

 

/displayconfig

Displays all current configuration information for the write filter including filter state,

 

protected volumes list, cache compression state, overlay cache threshold, cache pre-

 

allocation status, and write-through paths.

 

 

/overlaydetail

Displays detail on the current overlay contents for all protected volumes including file

 

and folder contents and memory used.

 

 

/addexclusion

Adds a write through path to the exclusion list.

 

 

/removeexclusion

Removes a write through path from the exclusion list.

 

 

/setthreshold

Sets the overlay threshold value.

 

 

Using the File-Based Write Filter GUI

To access the FBWF GUI, follow these steps:

▲Click Start > Control Panel > HP Write Filter Configuration. The FBWF interface includes the following buttons:

●Enable/Disable Write Filter—Enables/disables the FBWF so that data written to the protected media is cached or not.

●Enable/Disable Cache Compression—Enables/disables cache compression.

●Enable/Disable Cache Pre-allocation—Enables/disables cache pre-allocation.

●Set Cache Threshold—Sets the amount of RAM in MB that the FBWF cache can use.

Using the File-Based Write Filter status utility

The FBWF status utility creates an icon in the notification area of the taskbar that shows the status of the FBWF. You can right-click the icon to display and execute the available options.

The FBWF status icon displays the following states:

4Chapter 2 Getting started