What is the best architecture for storage servers array?
Needs... a) easy way to add one more server to array b) we don't have single backup server c) we need to have one backup for each "web" part of each server
Group #1 : is cross-server-backuping scheme; the main disadvantage that we can't add one more server, we should add 2 servers in one time.
Group #2 : is a Group #1, but with three and more servers. It also have a disadvantage - to add one more server we should move existing backup to it.