Slow Throughput Rate Only On Exchange Mailboxes 1

[billberge]

Hi,

I've been working with the "World Class" support folks at Symantec and have gotten nowhere. I have jumped though their hoops and rebooted server's and reinstalled remote agents only to wind up with nothing accomplished. Any help anyone can provide would be more than what I have gotten so far.

I am running Backup Exec 9.1. My throughput rate on all other backups is a minimun of 50 MB/min. As soon as the backup of Exchange Maiulboxes starts the rate drops to 6 MB/min thus taking the backup over 13 hours to complete.

Does anyone know of a fix for this or how to speed things up?

Thanks

 

[steveot]

There is not fix its a limitation of MAPI. Veritas calls on Microsoft MAPI SDKS. Its just like someone sitting at a outlook client opening and email, checking the rights in AD, opening the attachment, getting the security attributes from AD, then closing the email. Something has changed in your envoironment. Where does the global catalog server for exchange sit..locally or remote? Are there any issue with LDAP between the exchange server and the DC
You could upgrade to Backup Exec 11d which will allow granular restore of mailbox from information store backup

 

[billberge]

Steve,

Thanks for the info. The GC is located on the DC. There are no issuses betweeen the two boxes communicating. I'm not sure what might have changed. Any ideas?

 

[tech2004]

I was able to resolve the slowness of mailbox backups by upgrading to BackupExec 11d as Steve mentioned. It uses the Granular Recover Technology. This allowed me to only have to backup the information store. Then from the restore I can drill down to individual mailboxes and pull out items from there. You can see inside the information store all the mailboxes associated with it. It eliminates the slowness due to MAPI. This worked great. I was able to do a backup that had previously taken 16 hrs down to 5 hrs. Steve, have you heard if Netbackup with be using this technology also? The GRT also worked great for my sharepoint backups too by allowing individual document recovery.

 

[steveot]

There is a gotcha about the GRT you have to have disk space for this if you noticed it created a backup to disk folder and place basically a copy of the information store in a back to disk folder for the restore

Netbackup doesnt have GRT yet.

 

[billberge]

Thanks to both of you for the input. It looks like an upgrade is the best solution.