Running out of space on C: drive in a VM Exchange server

Hello Experts,

I currently have a issue on a VM server that runs our Exchange 2010.  Any time the available space on the C: drive of the VM server drops bellow 4GB we start having issues with inbound mail.  is there any way to extend volume C: with out causing to much trouble or what are the suggested steps to do so?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Can be done, with zero downtime....

see my EE Article

HOW TO:  Resize a VMware (VMDK) Virtual Disk

It's a two part procedure...

1. Extended the virtual machine disk, so right click VM, Edit Settings, Edit disk settings, and increase the disk size.

2. Extend/Expand the volume in the OS, as a system volume this may not be possible in Disk Management. But select the C: drive volume, right click Extend.

otherwise you will need to shutdown the server, and use utils as detailed in my EE Articles.

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Scott CSenior EngineerCommented:
You can do the above, that will fix the symptom but not the real issue. What you also need to do is move as much Exchange stuff from that drive to another volume.

I don't know what version of Exchange you have but here is how to move the queue for Exchange 2010.

You can also move some of the log files.

You should never install Exchange on the C drive.  I know it's too late now for this install but in the future....
When you use an exchange aware backup utility, and you do a full backup, and that is successful, it will delete the old exchange transaction logs. If the backup isn't successful, or only incremental of differential, it won't do that. So first make sure your backups are successful.

If they are, you can enable circular logging, which will keep the logs at normal sizes and so, if those logs are stored on C:, will help to not fill it up.
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