I have completed moving data on my oldest CDs to blu ray. I will keep my CDs but all back up is blu ray now.
S
Are these files now only on optical disc with no other copies available? If so, they are not backed up, no matter what format the disc is. If these are the only copy you have, then they are archived, not backed up.
Back up means you have at least one copy somewhere else.
I once lost work that cost me at least £2000 a few years ago. I decided to invest in a decent back up system after that. The problem is that until this happens to you, back up never seems like a good investment, as you see no benefit... and hopefully, you never WILL see the benefit. People like to spend money on shiny things.. not something they never see. It's like insurance... no one likes buying that either.
Here's my regime:
I back up everything to a second internal drive (automated).
That is then backed up to my main RAID6 server (automated)
That server is then mirrored to another RIAD5 server in my garage (automated).
At any one time I have 4 copies of all files, two of those copies are on systems with redundancy. The main server can actually stand t have two consecutive disk failures and survive. In order to lose data the main storage drive in my main machine would have to die, then my first back up drive, then TWO drives in my main server, then another drive in my mirror. I'd need FOUR disk failures simultaneously... and even then I'd probably be able to recover most of it.
It sounds extravagant, but all in I probably spend less than £1200 on the system.
When drives are full I either replace or expand. When I first built the system it used 1.5TB drives to give 3TB of space.... it's since been expanded using 4TB drives to give me 8TB of space. Hopefully when space becomes an issue again, there will be bigger disks available... if not, then I'll have to invest in a redundant archiving system.
If you earn money with your data, then you have no choice but to invest in something that makes it secure. To lose data now is very unlikely, and would probaly mean something serious enough to take out the whole house, and garage (which is 15 metres away).... in which case I've got much bugger issues than data loss!
Sorry... I'm not preaching... just serious about back up.