Unified Storage Server 2003 R2 SIS

[Ståle Wærum]

We're unable to get SIS to work on one volume. It says SIS installed but Space Saved = Unknown. This volume is a spanned volume contained by 2 dynamic SAN disks. To other volumes on ethe server got SIS installed and are reporting how much spaced is saved.

I get an application evnt log entry when I refresh Single Instant Storage:
"SIS volume information could not be retrieved for volume 'F:'. It os likely that SIS is not installed on the volume or it is not working correctly"

Anyone knows hot to troubleshoot this?

regards Staale