A backup solution is important to have, but sometimes the
network traffic that the backups generate can be detrimental to the production
network. Using CommVault, there is a way
to specify what network you wish to have your clients talk to the media agents
to keep the backup traffic off of the production network.
The first step is obviously to ensure that your clients and
media agents are on the backup network.
If possible, a separate network with a separate network adapter is
recommended. Test connectivity with some
ping tests before proceeding. It is also
recommended to add a DNS entry to these backup interfaces, such as hostname-b
to specify that it is a backup interface.
That way, if a backup network needs to change, such as for a migration
or a server replacement, a simple DNS entry change is all that is needed.
The 2nd step is to tell CommVault on what IP
interfaces you wish for them to communicate with each other. This is done by creating a data interface
pair.
To define a data interface pair for a client, follow these
steps.
- Navigate to the server in the
CommServe browser.
- Right click the server and select
Properties.
- From the General Tab, click the
Advanced button.
- Select the Job Configuration tab.
- At the bottom of the screen, click
Add to add a new interface pair.
- In the Add Data Interface Pair
Wizard, select the target machine, such as the media agent, that you wish to
create the pair with.
- Click Add again to tell CommVault
which IP interfaces you wish for the two servers to communicate with. Using hostname is preferred here, since if
there is an IP change, you only need to update the server and DNS entry and not
every client in the CommVault environment.
- Click Next, and then Next
again. Verify that all of the data on
this screen is accurate before clicking on Finish
At this point, you have created a Data Interface Pair. When this server needs to communicate with the
remote server defined, it will use the IP interfaces defined. If there are multiple media agents that the
server can use for its backups, you can create multiple data interface pairs
for the server. Repeat this process for
each server that you wish to use the backup network.