I remember back when I first started seeing a DR plan with three tiers of restore, 1 hour, 12 hours or 72 hours. I knew that to 1 hour meant a simple redirect to a DB partition that was a real time copy of the active DB, and twelve hours meant that failed, so the twelve hours was a restore point exercise that would mean some data loss, but less than one hour, or something like that.
I had never heard of 72 hours and so raised a question in the meeting. 72 hours meant having physical tapes shipped to the data center, and I believe meant up to 12 (though it could have been 24) hours of data lost. I was impressed by this, because the idea of having a job that ran either daily or twice daily that created tape backups was completely new to me.
This was in the early aughts. Not sure if tapes are still used…
I remember back when I first started seeing a DR plan with three tiers of restore, 1 hour, 12 hours or 72 hours. I knew that to 1 hour meant a simple redirect to a DB partition that was a real time copy of the active DB, and twelve hours meant that failed, so the twelve hours was a restore point exercise that would mean some data loss, but less than one hour, or something like that.
I had never heard of 72 hours and so raised a question in the meeting. 72 hours meant having physical tapes shipped to the data center, and I believe meant up to 12 (though it could have been 24) hours of data lost. I was impressed by this, because the idea of having a job that ran either daily or twice daily that created tape backups was completely new to me.
This was in the early aughts. Not sure if tapes are still used…
Alive and well depending on the use case. My org has an older backup software that’s entirely tape based and it’s amazing for the Linux systems I hear