File Server Load Balencing
Scenario (not education)
6-7+TB of storage
requirement - 99.9% uptime loads to be balanced
My current thoughts would be to have probably 3/4 servers (in my clusters I always work off the same theory as Raid 5, i.e 3 to accommodation for 1 failure) with data replicated between the three or 4 using DFS (ideally in two seperate physical locations). Ideally I don't want to be using a SAN for the data.
My problem is then how to load balance between the 3 or 4 hosts. I know DFS does a limited amount of load balancing but it doesn't take into account current load on each host.
I've done some googling around but cannot seem to find any sort of answers to a proper load balancing solution for file servers, web, exchange etc is all fine!
Another idea I have had is to use the 4th server (lesser specced and sata drives) as a copy only and then back this up, i.e backups can be run throughout the day without the users noticing.