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Methods, rules for backup personal data
Hello,
I would like to know whether you follow any formal rules backing up yours data? I am interested on more abstract rules than details. Lets say "three-two-one rule". Do anybody use this rule? Maybe this rule is a overkill? I mean valuable digital data. For example I have settled the PIT tax via Internet and I am obligated, by law, to keep proof of that for five years.
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Signature: Furthermore, I consider that systemd must be destroyed. Based on Latin oratorical phrase |
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I am a Tarsnap customer, so my data is stored in 3 external datacenters.
Based on your referenced 3-2-1 model, I'm using 3-nope-3. |
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I considered key management very carefully. MWL's Tarsnap Mastery (ISBN 9780692400203) was very helpful.
Each of my systems has two keys - one with a passphrase and one without. The key without passphrase is used for automated backups (I use ACTS). All "master" keys -- those with passphrases -- are replicated to all systems. A paper copy of each master key is stored in a desk drawer at $DAYJOB. If needed, the paper copy can be scanned and OCR used to recover a key. Paper was chosen as being longer term storage than USB stick or optical media. As the paper key is a master and requires a passphrase ... I don't even bother to lock the drawer. |
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For General Data Backup Use
How long would you use before replacing "USB" stilcks ? How long would you use before replacing "CD-DVD" data disc's ? |
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While I don't ever use USB sticks as long term storage -- the devices do not have sufficient lifespans and their failures are almost always catastrophic -- I do have some old optical media that I used to use for backup. I don't trust any of them for archival purposes now. Some discs that were burned 20 years ago are still readable; some that were burned 10 years ago are completely unreadable.
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Throwing my two cents in here because no one has said it:
If you care about long-term storage, there is really no other option than tape (though, if you're only going to care for 5-10 years, then spinning HDD is OK too). In my research group, we constant talk about forever-storage, and it saddens me that tape isn't thought of more often as this is exactly its use case. |
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I use bcrypt to encrypt my password files and have learned to keep copies on more than one flash drive.
The only problem being, if I encrypt them on FreeBSD that's the only version of bcrypt I've been able to decrypt them with. I have a couple versions on my OpenBSD box but so far haven't been able to get it to decrypt my files. Other less important files I keep in plain text on at least one USB stick, but it if it went down it wouldn't be the end of the world. Things like system files I can copy off when rebuilding my system instead of typing them out, images, docs I accumulate, ebooks, etc. |
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I know this thread is old, but somehow I read post that I agree and is excellent how I view hardware.
Quote:
Not recommended link. This is just a backup of post talking about backup.
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Signature: Furthermore, I consider that systemd must be destroyed. Based on Latin oratorical phrase Last edited by e1-531g; 8th November 2017 at 10:50 PM. |
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I agree 100%. Store and Use data as described above by e1-531g
Also as jiggimi pointed out in an earlier post, he spoke about the "relative reliability of optical discs, hard disks, usb/sd sticks, and of course tape drives. The two points above hit the nail on the head as far as i am concerned. If you follow data backup prudently, and know your hardware's relative life cycle, you should not loose data because of the two biggest reasons as to why you do! Last edited by frcc; 9th November 2017 at 08:25 PM. Reason: clarify response |
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