Netbackup 7.01 VMware Snapshots using SAN transfer type - still network traffic?
I'm trying to use Netbackup 7.01 to perform VMware snapshot backups using the vStorage API from a vSphere 4 environment. I've configured the off-host backups to a media server (not the master server) using the SAN transfer type. In spite of that, I am still seeing some data on the copper links during backups. On a recent 110GB snapshot transfer to FC attached LTO3 drives I still saw about 5GB worth of traffic from the off-host server to the master server.
I'm going to throw a packet sniffer on the connection and perform some testing, but I wanted to know if anyone else had run into this problem, or if someone could explain why I was still seeing this traffic? The traffic is short and fast, it fully saturates my gigabit copper connections, but only lasts for about 40 seconds or so.
Any thoughts would be greatly appreciated! I'll let everyone what kind of traffic I see.
The bpbrm from the media server sends the catalog information to the bpdbm on the master server usually after receiving a certain amount of information. I am not sure if it is a number of files or just a size. But it should definitely explain what is being sent to the Master. You probable will also see other communications to the master/EMM server. As the media server needs to keep let the master server know its current status.