I'm trying to move my backups to a NAS (QNAP TS-219P+). I've created a share folder on the NAS with full access rights for the guest account. I've mounted the share on my Zimbra server which is running RHEL 5.

Zimbra starts the backup process and actually writes to the directory.

It creates folders for the backup on the mounted drive. It created a folder called 'sessions', a folder called 'tmp' and inside the 'tmp' folder it's created folders for the last two backups called 'full-20120306.060005.762' and 'full-20120307.060005.475' but has cr*pped out both times with the following error messages:

com.zimbra.common.service.ServiceException: system failure: Unable to create directory /mnt/zbackups/tmp/full-20120306.060005.762/sys

com.zimbra.common.service.ServiceException: system failure: Unable to create directory /mnt/zbackups/tmp/full-20120307.060005.475/sys

Those are probably Zimbra specific errors as opposed to Redhat, but it seems like it can't create a folder called 'sys' for some reason. Would there be some reason I'm overlooking that would prevent it from creating a directory structure like that?

Is there a Zimbra log file I can check that will give me more info then the above failure messages? I'm clueless as to the issue and my only guess right now is that it's timing out.

I've read several posts on the board but can't seem to find the exact answer to my issue.