[Veritas-bu] Network load balancing
2000-10-16 14:36:16
Ravi Channavajhala said:
>Is it possible to do network load balancing across several
>physical interfaces in a media server i.e., one storage
>unit being shared by several netbackup slave server
>definitions eg., backup-e0, backup-e1, backup-e2? The
>primary definition is backup (nodename). All these interfaces
>are on different subnets. The storage unit is defined for
>backup instance only.
>
>I already defined these in bp.conf on the master as well as
>the slave. What I dont understand is, how does the master
>make a determination to direct a specific backup stream to
>a specific network interface. Thanks.
>
There are 2 streams of traffic for each client.
- backup stream
- catalog stream
A server will automatically talk to another machine using the interface with
the best metric. On Unix, if you've got 2 interfaces, the system will use the
interface on the network its trying to reach.
The client will need to know about each server name. So, what you probably
want to do is:
1. Set up multiple "A" records/IP's for your master server.
2. Set up 1 storage unit and makes it owned by whatever interface name you
consider primary.
3. List all of the "aliases" for the master server in the bp.conf file on
master and slaves.
All backup traffic will take the optimal route. All catalog traffic must get
sent to "master" which is the top line in the bp.conf file.
You will have asymmetric traffic flows, but your backup data will tape the
optimal route.
--
Andy Steingruebl | e-mail: steingra AT pprd.abbott DOT com
Unix Systems Admin/Programmer | phone: (847) 935-4728
Unix/Network Security | fax: (847) 935-0142
Abbott Laboratories, PPDR&D | post: 100 Abbott Park Road, D472 - AP9A
| Abbott Park, IL 60064-6115
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