Hello Petr,
Did you Upgrade the System Center Essentials 2007 SP1 Server to WSUS 3.0 SP2? Did you use the latest version of Windows Server Operating System Management Pack(Version:
6.0.6989.0)?
Support for Windows Server 2008 R2 and Windows 7 in System Center Essentials 2007 SP1
http://blogs.technet.com/b/systemcenteressentials/archive/2009/11/06/support-for-windows-server-2008-r2-and-windows-7-in-system-center-essentials-2007-sp1.aspx
Please read the document for the details about Logical Disk Free Space monitor:
Monitoring Logical Disk Free Space using the Logical Disk Free Space monitor
The default health state thresholds for the Logical Disk Free Space monitor are different for system and nonsystem logical disk volumes. Error and Warning health states are based on
both percentage of free space and on an absolute value, designated in megabytes (MB), of free space, as shown in the following sections.
System Partition
Health state
|
Percentage free space
|
MB free space
|
Error
|
5%
|
300 MB
|
Warning
|
10%
|
500 MB
|
Important
|
For health state to change to Error or Warning, the values for both percentage free space and MB free space must drop below the corresponding threshold.
Nonsystem Partition
Health state
|
Percent free space
|
MB free space
|
Error
|
5%
|
1,000 MB
|
Warning
|
10%
|
2,000 MB
|
Important
|
For health state to change to Error or Warning, the values for both percentage free space and MB free space must drop below the corresponding threshold.
By designing this monitor to evaluate both percentage free and MB free, the monitor works equally well for disks regardless of their storage capacity. This monitor does not alert on warning state, only on error state.
Thanks,
Yog Li
TechNet Community Support
