Windows 2008 server - how to reduce size of Datastore.edb

ANSWER: defrag the database using esentutl.exe




Here's what I did
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Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

C:\Users\******>esentutl.exe /?

Extensible Storage Engine Utilities for Microsoft(R) Windows(R)
Version 6.0
Copyright (C) Microsoft Corporation. All Rights Reserved.

DESCRIPTION:  Database utilities for the Extensible Storage Engine for Microsoft
(R) Windows(R).

MODES OF OPERATION:
      Defragmentation:  ESENTUTL.EXE /d <database name> [options]
             Recovery:  ESENTUTL.EXE /r <logfile base name> [options]
            Integrity:  ESENTUTL.EXE /g <database name> [options]
             Checksum:  ESENTUTL.EXE /k <file name> [options]
               Repair:  ESENTUTL.EXE /p <database name> [options]
            File Dump:  ESENTUTL.EXE /m[mode-modifier] <filename>
            Copy File:  ESENTUTL.EXE /y <source file> [options]

<<<<<  Press a key for more help  >>>>>
D=Defragmentation, R=Recovery, G=inteGrity, K=checKsum,
P=rePair, M=file duMp, Y=copY file
=>


C:\Users\*******>esentutl.exe /d c:\Windows\SoftwareDistribution\DataStore\DataSt
ore.edb

Extensible Storage Engine Utilities for Microsoft(R) Windows(R)
Version 6.0
Copyright (C) Microsoft Corporation. All Rights Reserved.

Initiating DEFRAGMENTATION mode...
            Database: c:\Windows\SoftwareDistribution\DataStore\DataStore.edb
      Temp. Database: TEMPDFRG18844.EDB

                  Defragmentation Status (% complete)

          0    10   20   30   40   50   60   70   80   90  100
          |----|----|----|----|----|----|----|----|----|----|
          ...................................................


Moving 'TEMPDFRG18844.EDB' to 'c:\Windows\SoftwareDistribution\DataStore\DataSto
re.edb'... DONE!

Note:
  It is recommended that you immediately perform a full backup
  of this database. If you restore a backup made before the
  defragmentation, the database will be rolled back to the state
  it was in at the time of that backup.

Operation completed successfully in 402.373 seconds.