I have a server with 2 similar HDDs. I usually use dd to clone 1 HDD to another every night. I had just recently thought of using rsync to just copy the difference between the 2 drives to quicken my backups and to avoid unmouting the source drive. Due to my recent use of dd, I had mistakenly run "rsync -av --no-whole-files --delete --force /dev/sdb1 /dev/sdc1" instead of using actual folder names. I now have a strange case where the 2 HDDs seem to act like mirror drives. When deleting or adding a file/folder to either drive, the other will reflect this change instantly without requiring me to run rsync.
--== Anything can go wrong. It's just a matter of how far wrong it will go till people think its right. ==--
--== Anything can go wrong. It's just a matter of how far wrong it will go till people think its right. ==--