Question about MSDP and Automated Image Replication (AIR)
I am working with Netbackup 7.1 and researching AIR with MSDP. I have come across the statement "If you are using MSDP for A.I.R, only the deduplicated data gets replicated. If the target already had the segments, it is not send again.". I understand what the poster is saying at face value, however my question is how.
My concern is what bits get transmitted over the wire. How does the destination MSDP know that the segments are unique or already stored in its pool until it has recieved and analyzed those segments? Do you configure the source media server as a load-balancer for the destination MSDP?
Thanks!
Hi,
Its just doing optimized duplication as you would within a NetBackup domain when using SLP's to duplicate from one MSDP to another MSDP (or PureDisk to PureDisk). Remember these are storage devices that work at a layer "below" netbackup. The storage devices talk to each other to find out, what's new, what's already stored, and what to send.
You don't configure any load balancers. The setup should reflect a regular push configuration where only the local media server is listed/configured in each storage unit respectively.