Transaction Log Restores

Hi All,

I currently have the following backup schedule for a selected database:

Weekly FULL, Daily DIFF & Hourly LOGS

I was under the impression that any FULL backup that was done on the database without the "COPY_ONLY" option selected, would result in the backup chain being broken and would potentially impact any subsequent restore operations.

However, I have discovered that this does not appear to be the case.

For example, I created a "rogue" full backup (using SSMS) in between my hourly RedGate Transaction Logs, thinking that any attempt to restore subsequent Transaction Logs would fail, but the restore procedure does not complain about the fact I have this "rogue" backup and allows me to restore the full set of previous logs, differential and full backups.

So, my question is how does the restore not complain about the fact that a full backup in the middle of my Trans Log schedule has been done without the COPY_ONLY option?

Hope this makes sense.

Thanks,
Bob