Exchange agent error-server out of storage space

We had a problem with the Exchange Agent returning an error message that we
have not seen before.  It was fine doing a differential backup an hour
before doing a full backup which generated the log entires below.  The
server has an IS of about 20Gig and we have been able to back it up without
problems in the past.  The Agent is at fixtest A, the NT server is at
V3.1.1.3.  I haven't run another full backup yet.  I'd like know if anyone
has more info on this before I do.

Thanks,
James Louie
Nabisco
973.682.7150
louiej AT nabisco DOT com


***** from client differential backup log 1 hr. before full backup w/error

09/15/1998 20:00:48,COMMAND LINE : C:\ADSM\agentexc\excdsmc /backup:dir,diff
/adsmpwd:nabisco /adsmoptfile:C:\ADSM\agentexc\dsm.opt
/logfile:C:\ADSM\agentexc\excsdiff.log
09/15/1998 20:01:03,BACKUP(CLC) - Database: DIR,Type: 3,Actual bytes:
26,214,757,Secs: 14.23,Kb/Sec: 1842.22,Exchange server: NS_MSG_EH,ADSM
server: C:\ADSM\agentexc\dsm.opt,Status: 26,214,757 bytes sent in 14.23
seconds(1842.22 Kb/sec)
09/15/1998
20:01:03,===================================================================
===
09/15/1998 20:01:03,COMMAND LINE : C:\ADSM\agentexc\excdsmc /backup:is,diff
/adsmpwd:nabisco /adsmoptfile:C:\ADSM\agentexc\dsm.opt
/logfile:C:\ADSM\agentexc\excsdiff.log
09/15/1998 20:01:48,BACKUP(CLC) - Database: IS,Type: 3,Actual bytes:
36,700,643,Secs: 44.27,Kb/Sec: 828.92,Exchange server: NS_MSG_EH,ADSM
server: C:\ADSM\agentexc\dsm.opt,Status: 36,700,643 bytes sent in 44.27
seconds(828.92 Kb/sec)
09/16/1998
08:01:01,===================================================================
===



***** from client agent full backup log

09/15/1998 21:00:49,COMMAND LINE : C:\ADSM\agentexc\excdsmc /backup:dir,full
/adsmpwd:nabisco /adsmoptfile:C:\ADSM\agentexc\dsm.opt
/logfile:C:\ADSM\agentexc\excsfull.log
09/15/1998 21:01:43,BACKUP(CLC) - Database: DIR,Type: 0,Actual bytes:
63,979,863,Secs: 53.69,Kb/Sec: 1191.70,Exchange server: NS_MSG_EH,ADSM
server: C:\ADSM\agentexc\dsm.opt,Status: 63,979,863 bytes sent in 53.69
seconds(1191.70 Kb/sec)
09/15/1998
21:01:43,===================================================================
===
09/15/1998 21:01:43,COMMAND LINE : C:\ADSM\agentexc\excdsmc /backup:is,full
/adsmpwd:nabisco /adsmoptfile:C:\ADSM\agentexc\dsm.opt
/logfile:C:\ADSM\agentexc\excsfull.log
09/16/1998 01:58:48,BACKUP(CLC) - Database: IS,Type: 0,Actual bytes:
N/A,Secs: 0.00,Kb/Sec: 0.00,Exchange server: NS_MSG_EH,ADSM server:
C:\ADSM\agentexc\dsm.opt,Status: ANS1311E (RC11)   Server out of data
storage space



***** from activity log:

ANR0534W Transaction failed for session 930 for node NS_MSG_EH_X (WinNTDB) -
size estimate exceeded and server is unable to obtain additional space in
storage pool BACKUPPOOL.