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VM LAN Free Backup

Created: 02 Jun 2010 • Updated: 04 Jul 2010 | 4 comments
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The idea behind this is to take a LAN-free backup, utilizing the SAN directly to the Tape Drive of VMware Virtual Machines. VMware VADP technology enables such feature to happen, and Backup Exec is listed as supported to use this option, however there is lack of information what is required to achieve this, such as do you need the VMware Infrastructure agent? or the Backup is being taken file level? Any configuration from the Backup Exec?

Any feedback would be appreciated.

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Colin Weaver's picture

Backup Exec supports the SAN transport mode for VMware backups - the transport modes are set inside the properties of the Backup Job

To use SAN Transport mode you must connect your Backup Exec Media Server via the SAN to your VMWare datastore and connect the tape drive to the Backup Exec Media server - this gives you a LAN free backup with the following exceptions.

There is a small amount of LAN traffic to the vCenter/ESX server as control traffic to identify details of the virtual machine and to request snapshots etc.
If GRT is enabled in the job, then there is a small amount of LAN traffic to the remote agent inside the virtual machine to gather the GRT metadata.

We do not have the ability to control/use a tape drive connected directly to the ESX host

Note: my test system uses SAN transport mode on an iSCSI Datastore - whcih is quicker than the NBD (LAN)  transport mode.

cp__'s picture

Thanks for your answer, I'll be trying this.

cp__'s picture

the SAN transport option is dependent on the VMWare agent?

Colin Weaver's picture

Yes you need the VMWare agent - sorry I should have said :)