We are preparing on updating to 9.02 from 8.51
When we restart the robot service we found that that hard drive was filling up.
When you look into it further, most of the java probe such as discovery_server, udm_manager, wasp were generating java memory dumps continually filling up the drive.
from the java hs_err_pidXXX.log
Stack: [0x0000000000f50000,0x0000000001050000], sp=0x000000000104e2a0, free space=1016k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0x13e613]
C [sqljdbc_auth.dll+0x6857]
C 0x0000000001247f54