Configuring Uwf (Unified Write Filter) - NEC Express5800 Series User Manual

Chapter 4 Configuring Client Settings with Atrust Client Setup
2.9

Configuring UWF (Unified Write Filter)

Your US320f is UWF-enabled by default. Unified Write Filter (UWF) is a sector-based write filter intercepting all write
attempts to a protected volume and redirecting those write attempts to a RAM cache. With UWF, all system changes will
only affect the session where the changes are made. After restart, all changes will be discarded.
To configure the UWF settings, do the following:
1. On Atrust Client Setup, click System > UWF.
2. Click the Next State drop-down menu to enable/disable the UWF feature.
3. Click to select other options if needed.
UWF options
Next State
Maximum used memory
When UWF is disabled, warn me every
4. Click Save to confirm your selections.
Important  The UWF function is enabled by default at shipment. Changes made during the session except
for changes to Atrust Client Setup settings are discarded after the system restarts. To retain
changes to system settings and other data after restart, check that UWF is set to retain changes
before changing settings.
 The icon in the Notification area of the Taskbar indicates the current UWF status of the system.
For details, see the description later in this section.
Item
Important  The maximum memory used recommends 1024MB of default value.
 There is a possibility that cash of UWF overlays is used by various factors, and when cash
exceeds the maximum memory used, there is a fear that the system becomes unstable.
Express5800/US320f User's Guide
Description
Click to enable / disable UWF. A restart is required for switching.
Click to select the maximum memory used for UWF.
Click to select how often the system warns you when UWF is disabled.
2. Configuring System Settings
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