Understanding Exchange /MK E00.chk

Posted on 2009-02-09
Last Modified: 2012-05-06
I have been using Acronis to backup exchange. I now understand that Acronis isn't "exchange aware." However, I believe it is up backing exchange up completely (using VSS). But, isn't notifying exchange, so my log files are not beling deleted.

After backing up I ran eseutil /MK E00.chk. Here are my findings:
(see code for the actual /MK response)

Acronis or VSS notified exchange enough to set the checkpoint at 58B7. Which is many logs after 5859 (the last exchange recognized backup - NTBackup). So, according to what I have read, I do NOT need to keep any log file before E00058B7.LOG?

Anyone know of a autimated utility that reads a chk log file and deletes logs that aren't needed? Or a batch file? (besides NTBackup or Backup Exec or a different backup utility).

Thank you.
Microsoft(R) Exchange Server Database Utilities

Version 6.5

Copyright (C) Microsoft Corporation. All Rights Reserved.

Initiating FILE DUMP mode...

      Checkpoint file: D:\exchange2003\MDBDATA\E00.chk

      LastFullBackupCheckpoint: (0x0,0,0)

      Checkpoint: (0x58B7,2782,5C)

      FullBackup: (0x5859,8,16)

      FullBackup time: 02/06/2009 21:55:53

      IncBackup: (0x0,0,0)

      IncBackup time: 00/00/1900 00:00:00

      Signature: Create time:08/11/2007 13:49:50 Rand:1376055 Computer:

      Env (CircLog,Session,Opentbl,VerPage,Cursors,LogBufs,LogFile,Buffers)

          (    off,    352,  17600,   2492,  17600,    500,  10240, 147456)

Operation completed successfully in 1.0 seconds.

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Question by:Op35
    LVL 8

    Accepted Solution

    What you assume is totally correct. See for confirmation which applies to transaction loggin in Exchange Server 2003 as well. Snapshot backups are not recommended as they may take you throgh several problems during recovery.

    I would recommend NTBackup as a best tool to back up exchange if you do not want to go for any other tool.  I am not aware of any other tool which can understand eseclib2.dll functions.

    LVL 12

    Assisted Solution

    by:Steven Wells
    I would suggest you run a ntbackup job daily before your backup job. If you have disk space then put your backup file on the same server so it will be backed up alowing restore if needed.
    Some disk backup technologies are exchange aware but normally work in conjuction with backup software such as networker from emc
    LVL 1

    Author Comment

    Thank you both for your insightful comments. I believe I will take your suggests and use NTBackup to backup to a local drive and then Image the server with Acronis. This will solve the log issue and probably any restoration issues with Exchange. It will however make my backups take a bit longer and use more space, but, a large backup is better than no backup.

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