Backup Design for Environment with multiple sites
We are working on a design for a backup solution for an environment with mulitple sites and we are looking for advice and recommendations.
The environment we are working with consists out of 2 main sites and 5 subsites. The primary main site contains online disks used for back-up-to-disk and is connected with the secondary main site using 2 10Gbps private links. The secondary main site is connected with every subsite using 1Gbps private links.
We are looking into the idea where the primary main site will be used as back-up-to-disk site for the entire environment and where the secondary main site will be used to store a second copy of the backup data on tape. Deduplication will be used on the backup servers for back-up-to-disk.
Based on this scenario we have the following question before we can proceed. Do we provide a backup server per site that writes to the online disks at the primary main site or do we provide multiple backup servers in the primary main site that gather the data from the subsites?
What are the recommendations for a scenario where one wants to use a central backup site in a multi site environment?
Any advice is welcome.