Cirular Logging Enable Disable and its side effects on Clients

the issue with circular logging is that any transaction that occurs after your exchange database backup would be lost in the event of disk failure
no impact at the client level

iow
you backup your database tonight and tomorrow at noon your server crashes and you need to restore
your restore would get you back to last night and you would lose all mail between the backup and noon

Enabling circular logging is not a good idea.  If you can schedule a small amount of downtime, you can move the log file locations to your other storage using the Exchange GUI.  

I suspect your backups are not working/scheduled if you're running out of disk space due to large numbers of log files.  Note:  A full backup will truncate your log files each time it runs.

Here's how to move the log files:
http://support.microsoft.com/kb/821915

definitely move the logs

This is the current location of the log files
F:\New Folder

and i have space on G:
and on H:

pls write me the steps how to move them on do i have to copy the full folder with all the logs or juss change the path from enterprise manager ?

with thanx

Elee

just use exchange system manager
it will dismount and move the files and mount the database
easiest way

and how about the old log files should i leave them as it is or i have to move or copy them to the new folder ?

thanks

Elee

system manager will move all of the files in the storage group path
you don't need to do anything other than start the process

Endital has covered the reason behind - not enabling circular logging.

Steps on how to move database + logs to a diff disk
http://www.petri.co.il/move_exchange_stores_to_a_different_disk.htm
http://support.microsoft.com/kb/821915

Also use my comments from prior post @ cleanup
c:\temp
c:\windows\temp\
%tmp%
c:\windows\softwaredistribution

How much space are your logs using?  

I'm still concerned that your backups aren't working correctly.  If your backups run correctly, your logs should be deleted each time the backup runs.

hi Paka,
 the Logs are taking almost 30GB space of HD and the DB almost 40GB of the total disk Space 72.2GB. Please guid me how can i control it.

thanks
Elee

you have to take a full backup and flush the logs.
how to move the logs

check the steps above in my post

Steps on how to move database + logs to a diff disk
http://www.petri.co.il/move_exchange_stores_to_a_different_disk.htm
http://support.microsoft.com/kb/821915

i'll third the motion for a full backup

Hi Sunnyc7,
i juss got the idea how to move them arround but when i try to take full backup of the server it gives me some error as well that the path is not correct or user dont have access to it. Event ID 8001 comes when i try full backup pls help how to get rid of this error and move forward with Full Backup.

with Tonz of Thanks

Elee

what are you using to backup exchange? can you post the error?

hi end

here is the report

Backup Status
Operation: Backup
Active backup destination: File
Media name: "XBU7.9.2010.bkf created 9/7/2010 at 10:03 PM"

Volume shadow copy creation: Attempt 1.
Backup of "INMA2\Microsoft Information Store\First Storage Group"
Backup set #1 on media #1
Backup description: "Set created 9/7/2010 at 10:03 PM"
Media name: "XBU7.9.2010.bkf created 9/7/2010 at 10:03 PM"

Backup Type: Normal

Backup started on 9/7/2010 at 10:03 PM.

Error: The device reported an error on a request to write data to media.
Error reported: Invalid command.
There may be a hardware or media problem.
Please check the system event log for relevant failures.
The operation was ended.
Backup completed on 9/7/2010 at 11:08 PM.
Directories: 2
Files: 4
Bytes: 45,110,653,876
Time:  47 minutes and  39 seconds

Error: INMC2\Microsoft Information Store\First Storage Group is not a valid drive, or you do not have access.


----------------------

The operation did not successfully complete.

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What account are you using to take full backup
In ntbackup you have to take normal * flush logs

do you have the following registry key
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
Name: Enable Remote Streaming Backup
Type: DWORD
Value: 0 = default behavior (remote backup disabled); 1 = remote backup enabled

check the guide here too
http://www.msexchange.org/tutorials/Exchange-2003-Backup-Restore-NTBACKUP.html

Also check enditals registry entry first.

Sunny i m using administrator account of domain i duno from where the access issue is comming.. lemme check tht link as well..

thanks
Elee

It doesn't look like there are permission problems since your backup backed up 45GB.

See this link for the backup error message that you got:
http://support.microsoft.com/kb/555613

Do you have enough space on your backup device?  What event showed up in the application log after you tried the backup?

I was not having enuff space of the full backup thats why the problem was comming and btw i experiences when you take full back it automatically flushes the logs and gives you more space.

with BR

Elee