DOCUMENT:Q155492  03-APR-1999  [exchange]
TITLE   :XADM: Optimizer Stops if Free Disk Space Is Low
PRODUCT :Microsoft Exchange
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:kbusage

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The information in this article applies to:

 - Microsoft Exchange Server, version 4.0 
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SYMPTOMS
========

When you attempt to run the Microsoft Exchange Optimizer, it will stop
responding if the disk space is too low. Microsoft Exchange itself will shut
down if the free disk space drops below 10 MB.

Scenario:

The Windows NT operating system is on drive C. The Microsoft Exchange Server is
on drive D with 10 GB of free disk space.

The Microsoft Exchange Server log files have been optimized to reside on drive E,
which initially had 10 GB of free disk space. Free disk space on drive E drops
to 4 MB. The issue is how to move the log files from drive E to drive D. The
correct way is to use the Optimizer, but Optimizer stops responding because of
the lack of disk space on drive E.

RESOLUTION
==========

To resolve this problem:

1. On drive D, create a hold directory for the MDBDATA or DSADATA log files on
   drive E. From drive E , move 30 to 40 MB of log files to a hold directory on
   drive D. This releases enough disk space to run the Optimizer.

2. Run Optimizer and relocate the log files to drive D, but do NOT start the
   services when you click the Finish button in Optimizer. Instead, select the
   "Do not start these services" check box.

3. Copy the log files that were previously copied to the hold directory on drive
   D to the appropriate Microsoft Exchange directory, that is, MDBDATA or
   DSADATA on drive D.

4. Start the services.

MORE INFORMATION
================

Using the Microsoft Exchange Optimizer to relocate the Microsoft Exchange Server
data files ensures all the appropriate files are moved and the correct Microsoft
Exchange Server entries are recorded in the NT Windows registry.

Additional query words:

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Keywords          : kbusage 
Technology        : kbExchangeSearch kbExchange400 kbZNotKeyword2
Version           : winnt:4.0

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