1tb isn't quite into the VLDB range, but, once you get past around 3-5tb, you need to start looking at things like SAN snapshots. But, even that could be problematic because the SAN can replicate the corruption.
Prior to that, mirroring or AlwaysOn would be your best bets for dealing with corruption issues. While Availability Groups help with some types of HA/DR, they won't help with corruption due to the shared storage aspect.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning