I have following messages in my log:

1       1246875004      event   savegroup       Savegroup warning: Inactive 
files in saveset M:\ on host srvba occupy 95.52 percent of the used space, 
which exceeds threshold of 30 percent configured for this client

2       1246875045      event   savegroup       Savegroup warning: Inactive 
files in group Beckap servera full occupy 93.00 percent of the used space, 
which exceeds threshold of 30 percent configured for this group

I do not where  I could adjust 30% threshold configured for the group and for 
clients?

Basically I do not know the meaning 92% percante of used space? What does it 
mean used space?

What I have to adjust?

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