Windows Embedded Standard 7 for HP Thin Clients - Administrator Guide

Status icon
The write filter status icon is located in the Windows notification area and displays the current status
of the write filter that is currently in use. The following commands can be executed by right-clicking
the status icon and selecting the desired action:
●
Enable—Enables the write filter on the next thin client restart.
●
Disable—Disables the write filter on the next thin client restart.
●
Commit (EWF only)—Cached write data in the volume overlay will be committed (made
permanent) to the underlying volume on the next thin client restart.
●
Clear Command—Clears the current boot command.
NOTE: You cannot switch write filters on a single thin client restart using the status icon. This can
only be accomplished using the HP Write Filter Configuration utility or the command line.
The following table defines the different states of the status icon and which write filters they are
applicable to.
Icon EWF FBWF Definition
√ √ The write filter is enabled.
√ √ One of the following actions will take effect on the next thin client restart:
●
The write filter will be disabled.
●
The volume overlay will be committed (EWF only).
●
The write filter will switch either from EWF to FBWF or from FBWF to EWF.
√ √ The write filter is disabled.
√ √ The write filter will be enabled on the next thin client restart.
√ The memory usage of the FBWF cache has reached a warning level.
√ The memory usage of the FBWF cache has reached a warning level, and one of the
following actions will take effect on the next thin client restart:
●
The write filter will be disabled.
●
The write filter will switch from FBWF to EWF.
√ The memory usage of the FBWF cache has reached a critical level.
√ The memory usage of the FBWF cache has reached a critical level, and one of the following
actions will take effect on the next thin client restart:
●
The write filter will be disabled.
●
The write filter will switch from FBWF to EWF.
√ √ The write filter is corrupted and unusable.
4 Chapter 2 Write filters