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3 ve kadim dostu 1 olan sj'yi rakamla giriniz. ( 31 )

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Please briefly explain why you feel this user should be reported.

Need to cold store ~2GB of data. What is the best way to do this?

Currently have the data stored on 10 flash drives in redundant locations + EMP shields. Have been reading that is not as safe as I’d like so I am asking for recommendations.

With this being such little data, is my best bet still a HDD? Is external viable? Doubt I will opt for a tape option FYI.

Would also like to get a better understanding of data checking via hashes and protection against bit rot.

All help is appreciated.

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30 Yorumları

  1. More important than the technology you use to store the data is the process you use to write, validate, and update the data. It’s less about what you use, and more about how you use it.

  2. You should store multiple formats in each location. What I recommend is:

    1. ZIP it.
    2. Burn the whole zip to a DVD-R
    3. Split it into say 10 and burn each split onto a separate CD-R.
    4. Use a small flash drive to also store a copy


    of course store in each location inside of a faraday cage exactly one set of each of these.

    You now have it about as redundant as is possible tbh for a reasonable price to do so.


    Also: I’d also store in each location a copy of winrar, a cracked windows install disk, etc. if you want it futureproofed btw so that it’s always able to be read in future even if computing changes a lot. And maybe even a USB CD/DVD reader. Remember when Floppy died. Now imagine those people that had windows 98 programs and floppy backups how you want to do now. Without the USB floppy reader and the installer disks, they are not able to read it these days without going out and trying to find those.


    Edit: Apologies to the OP for people here, they tend to love the cloud services and all. I know you asked for offline options, which I why I answered so. I hope you find the solution you need and I really wish people read the OFFLINE ONLY part before they replied with 100 offers of cloud services.

  3. For some reason this reminded me of using zip drives back in the day.

  4. Get a safe deposit box. Many businesses still use them. They often swap out disks on a daily basis. It’s one place to have a copy. Some Vaults even provide EMP protection.

  5. I would use m-disks and use win rar with a recovery record of 100 for more percent.

  6. I’d take two or three hard drives and keep identical copies on each.

    There’s lots of md5 tools out there to store hashes to compare later.

    This one is my favorite, but I wrote it… I’ve only tested it on Linux.

  7. amazon glacier?

    that’s not a lot of data and sure beats using some random hdd or flash drive that ends up lost or overwritten.

  8. well you can probably pack those files on a rar file and give it a recovery record, then just burn it on a DVD or Bluray disc and fill it to brim with multiple copies of the same file.

  9. Encrypt an archive and upload to tons of free cloud storage services

  10. Flash is fine, are we talking about 100yrs here?

    3-2-1- rule.

  11. encrypted, backuped on cloud, i guess that’s a solution.

  12. 1 copy on dropbox (free), 1 copy on box.com (free), 1 copy on gdrive (free), 1 copy on dvd, 1 copy on usb (because why the heck not its only 2gb)

  13. If you need a really long-term solution, one thing that could probably outlive you with zero maintenance is paper. While USB, SATA, LTO, optical formats and cloud services might be long obsolete or gone in 100+ years, I’m willing to bet scanners with an automatic document feeder, or at least cameras would still be around if civilization hasn’t collapsed yet.

    Assuming you could store 1 MB per sheet after accounting for redundancy and error correction overhead, that’s 2000 sheets, which isn’t too bad. Print it with a monochrome laser printer on acid-free paper, along with a human-readable description of the format and decoding instructions. Pack it in some light-proof, airtight container, with some moisture absorber and oxygen scavenger, and store that in a safe deposit box in Switzerland.

  14. Backblaze B2. Your first 10 GB is free, so 2 will fit comfortably.

  15. I’d drop it in AWS S3 storage – doesn’t get much better than 99.999999999% data durability.

  16. Seriously, just put it up in S3 and/or GCS. You get 11 9s of durability in either (more if you use both), and the amount of data is so small it falls in the free tier so it doesn’t cost you anything. Even if you insist on keeping one or more copies on physical media, do this anyway for the extra free off-site backups

  17. Burn it twice on a good DVD at the slowest speed. I’m saying twice in case it gets scratched, the duplicate file is on a healthy zone.

  18. A couple of M-Discs, stored dry and cool in a few separate locations. Which will be mostly empty even if you get the smaller 25 GB models. That should be job done, they advertise 1000 year lifespan but even a tenth of that is a century. But, of course, multiple copies. And maybe run http://www.quickpar.org.uk on the data set and add parity data to reconstruct anything should it be partiallyi damaged anyway. With 2 GB – which is basically nothing nowadays – you can add a gigabyte of parity data if you want and then burn the resulting 3 gigs to multiple discs.

    Or pay Amazon 2 x $0.95 a month…

  19. Are you actually burying your crypto money/wallet info?

  20. Look into M-DISC media from a couple of different manufacturers.

    And LTO-4 and LTO-5 aren’t that expensive, but are completely overkill for 2GB of stuff.

  21. For protection against bit rot and data corruption, have you checked out parity archives? I’ve used MultiPar on Windows and par2cmdline on Mac/Linux. Instead of just detecting corruption, you can recover at least part it of (depending on what percentage you set for recovery – for a 4.7GB DVD you could effectively store a complete duplicate of the data). Writable DVDs only last for a certain amount of time, I wouldn’t trust them after maybe 10 years.

  22. never keep all your data in the same place, look into an off site option as well

    I think Gmail gives you 5gb with every account and the rule atleast 3 copies.

    If its only 2gb which is nothing, i would

    1) offline HD (Local or renting a box in a bank or something similar)

    2) Local online HD

    3) something like this maybe [https://en.wikipedia.org/wiki/M-DISC](https://en.wikipedia.org/wiki/M-DISC) a more permanent DVD/Bluray but it costs more. Lifespan is said to be 1000 years

    4) G-suite online backup

  23. Dvd or Blu-ray and best thing you can do is buy a few different brands and batch’s and burn 10 copies.

  24. 2GB isn’t much. Zip it and encrypt it if you want to keep it private and store it on any one of the many cloud services. Most give you at least 5-15GB free.

    10 copies is a little excessive, lol. But flash drives aren’t the most reliable. Can’t hurt to store it on a few. But 2GB you can burn to DVD-R or BD-R discs.

    As far as hashes if you use Windows or Mac check out CRCCheckCopy: https://www.starmessagesoftware.com/crccheckcopy

    Or use something like hashdeep or md5deep: http://md5deep.sourceforge.net/