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jschell wrote: Up until about 20 years ago tape was the only solution.
I would raise that to 30 years, if you talk about the only solution. 21 years ago, in 2002, my employer at the time - the National Library of Norway - threw out their tape robot, replacing it with a big wall of RAIDed hard disks. Tape was considered an outdated technology; certainly not 'the only solution'.
So that meant a IT guy needed to swap tapes in and out. This tape robot, thrown out in 2002, was fully automated. No manual handling of tapes. I am not sure how old the robot was; it had been there a few years when I entered the job. Their policy was to migrate all archived data to new media every 5 to 10 years, and the move to RAID disks were considered overdue. So I guess the tape robot was, at the very latest, installed around 1995.
For example a database with encrypted columns. Where is the key? Certainly an essential question. But it is the same regardless of which backup technology you choose.
With one slight modification: When I am in physical control of the backup media, I consider encryption for the purpose of the backup itself to be less important. If I were to send the files to some other backup service, there is a lot more that I would encrypt. But I take your scenario to mean a database encryption that is done in any case, not just for backup purposes.
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trønderen wrote: Tape was considered an outdated technology; certainly not 'the only solution'
In terms of cost and process it was about 20 years ago that a transition became possible.
For the example you gave they were already spending a lot on the existing system and the new system would have also have been expensive. Smaller organizations could not have afforded either solution. And there are many more smaller organizations than larger. So in effect manual tape was the only solution. Even more so since at that point even small companies started increasing the amount of data that was stored digitally (versus paper.)
trønderen wrote: But it is the same regardless of which backup technology you choose.
Yes but my point was more about the reliance on older back ups. So even if the technology was till accessible the information to use it might no longer exist.
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jschell wrote: Keep in mind of course that one should consider carefully what 'backup' actually means.
I've got friends who state in dead earnest that 'I have a backup copy of my photos in the the cloud, so I have cleaned them out of my hard disk'.
I have tried to give them a lesson in what 'backup' means. Not all of them are willing to understand.
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I have had to explain to people that a source control system is not a back up.
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I think all my programming friends - including those who are programmers by profession - need to have that explained!
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We ran a computer and network service company in a resort town and had various customers with a variety of backup software from Windows Server backup to Acronis and while we showed them how to daily check the backup logs they all opted for up to do it remotely for 25.00 a week. It's incredible but I have always contended after babysitting "normals" who have computers is that they shouldn't have em. Primarily because if they don't make image backups they could loose everything when the drive goes kaput. Todays SSD give no warning but just leave town with your deftly arranged bytes that look like what you care about.
Now not only is Microsoft taking your libraries and putting it on there "One Drive" computers re-pointing paths to that so it;s "transparent to the user", Now they are bitlocking it too. Try to have a conversation with your Dad about how MS encrypted your data, they have it and without the 48 bit key to unlock it...... They look at you like you are from another planet.
I'm done.
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To this day, I maintain that I had stuff on One Drive that simply disappeared ... while the folders remained. So, no, I don't rely on the cloud for "backups".
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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The thing is, there isn't just one cloud. If you're not precious about them having your files, backing up stuff to TWO (or more) cloud services would seem to be a robust option. Even if MS lose your data today, it's pretty unlikely Google will too. Voila! Redundant off-site backups.
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I never trusted online backups. I do not trust them to keep my data safe. Nor to keep them private. Nor to allow me to store arbitrary files. Nor to be able to present my photo album to my grandchildren 50 years from now. Nor to not show them my very personal notes that were meant for noone but myself.
I could use an online backup to save an extra backup, in case my primary backup is lost. A lot of files in that extra backup would be encrypted before sending them down in the crypt. I am not currently doing that.
Does the online bakcup have an offsite bakcup? (Thanks to fgs1963 for reminding us about offsite copies!) This story seems to suggest that the answer is 'No'.
There are a couple other points that are often overlooked: I have some old files backed up on both DC100 and DC300 quarter inch tape cassette. (Actually, I even have some files on 1/2" open reel 7-track tape, but I made that tape mostly to learn how to handle the tape station, not really for bakup purposes). I have files on two different Travan tape cassettes. I have at least one hundred 8" floppies (they were really flopping!). The first digital camera I used saved the photos on 2" floppies - I still got the floppies, but the camera belonged to my workplace, 30+ years ago. I never had my own Travan station; it belonged to my workplace, too. Obviously, I didn't have a 7-track tape station at home. I could have had a DC300 (the format changed name to QIC); they weren't that expensive, but I rather brought my private files to work and saved them to tape there.
I guess that if my life depended on it, it would be possible to have the files on QIC tape recovered. It probably would take too much time to save my life. It probably would be terribly expensive. But there were a whole crowd of variants, in track layout, packing density etc., so don't expect just any old QIC station to be able to read my first-generation DC300 tapes (before the QIC standard arrived). The open reel and Travan tapes, and the 2" floppy, are nice computer museum artifacts. Even if my life depended on it, I guess I would have crossed the river before anyone could get hold of a reader for them.
I actually have both 5.25" and 3.5" floppy units, but I am about to ditch the PC that can handle them; I haven't booted it for years. Most likely, some of my friends still have 3.5" units, Maybe even 5.25", I wouldn't be sure of that.
Then comes the second major problem:
I have migrated 'the most important' files from one medium to another. Over 40 years, I have created documents in more than a dozen different formats. Note that some filename extensions (such as .doc) hide several generations of formats which may be quite different, but new software versions handle all the old formats too. For photos, the number of formats exceed two dozen. Sound: Somewhere between one and two dozen. Video: A handful of different raw formats. At least four 'final' formats. I've got analog tapes with no noise reduction, with Dolby B, Dolby C and open-reel tapes with dBX noise reduction.
Some of my amateur photographer friends insist on saving all their photos in '.raw' format, seriously believing that there is One Unique and Never Changing Raw Format. That 'raw' is a totally unambiguous concept. It isn't.
I am quite sure that in basements, attics and safe deposit boxes, there are millions of diskettes, tapes and other storage media for which the owner no longer has a reader. If he gets hold of one, there is a great risk that he won't have the software to read the media (there are other file systems than FAT, NTFS and the 42 different *nix file systems!), or if he can copy the files to his current PC, that he has no software to display or play the files.
So, a great deal of the backups made are useless. Cannot be retrieved, or retrieval will be tremendously expensive. So maybe it is a good thing that 'Social' Media teaches us to treat anything that is more than a week old as outdated and irrelevant. No modern grandpa or grandma digs up an photo album from their childhood, to show and tell the grandchildren how it was back then. The old ones never even suggest it, and the kids would find it boring. So it doesn't really matter if the files are lost.
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Quote: No modern grandpa or grandma digs up an photo album from their childhood, to show and tell the grandchildren how it was back then.
We do. I even digitized old super 8 films, put them on a web server (Raspberry Pi) and put it on line for them to watch. They said they did. The wife is making copies of photo's and newspaper clipping for my daughter to take to her 30th HS reunion.
Alas, born of the 30's, we are string savers. We each vow to go first to avoid having to go through the other's "stuff".
>64
Some days the dragon wins. Suck it up.
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trønderen wrote: and the kids would find it boring. So it doesn't really matter if the files are lost.
Yep.
The fact that one person finds is significant and valuable does not mean that others will.
The only difference with digital is that it will give someone the chance to toss it without agonizing over whether they should keep it or not.
trønderen wrote: Some of my amateur photographer friends
I had an office mate who had 1,800 photos of his 18 month old child. All labeled. All digital fortunately which made getting the count easier of course. (Even worse I can't remember the exact number but it might have been 18,000.)
Second child was on the way.
There is a well known phenomenon where parents take way more photos of the first child than the children that come after that.
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When digital cameras arrived, I was not first in line to get one. Two of my co-workers were, long before me. We had a social mountain cabin weekend at work, and Monday morning, one of those digital guys put his 700 photos from the weekend on the company file server. The other digital one followed up, publishing his 500 photos on the company server.
When I had my 36 slides developed a couple of days later, I didn't care to try compete with the 1200 photos already on the server (actually more: Several other co-workers had added their 100, 150 or 200 photos.)
On the other hand: The silver photos I made are still among those I use to show what kind of pictures I am proud to make.
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trønderen wrote: one of those digital guys put his 700 photos from the weekend on the company file server. The other digital one followed up, publishing his 500 photos on the company server.
lol...just one weekend?
Did they even do anything except take pictures?
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Having cleaned up after 3 different ransomeware attacks (different clients), I probably have different thoughts about backup. Worst loss: 3 days of email. All backups were air-gapped.
There is Backup and there is D.R. Different requirements, IMO.
>64
Some days the dragon wins. Suck it up.
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This one's going to run and run, but what I do is:
- daily backups to a second, local hard drive
- daily backups to OneDrive (I use that because storage there is cheap)
I feel on pretty safe ground here, don't reckon I'm going to lose anything. I used to also back up occasionally to an external drive, but I don't do that anymore.
Paul Sanders.
If I had more time, I would have written a shorter letter - Blaise Pascal.
Some of my best work is in the undo buffer.
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Presumably full rather than overwrites?
If just a overwrite then this is susceptible to a ransomware attack. Could still be even so if the older ones are still writable.
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OneDrive keeps old versions. 30 days, IIRC
Paul Sanders.
If I had more time, I would have written a shorter letter - Blaise Pascal.
Some of my best work is in the undo buffer.
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My very first boss in the business, this would have been 1978 and the environment was IBM mainframe, gave me a 7 inch magtape and said "every good programmer has a backup".
Now it I use thumb drives on Intel/Windows or Linux; I make backups/copies about every other day and at significant milestones. One copy onto the shared network drive, one into my pocket. May be a problem with company policy? everything is password protected and/or encrypted with a key and I don't make a big deal of letting people know I don't trust their network copies.
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"How did one idiot find another before social media?"
...asked the lady in a face-to-face conversation.
I think there's the answer right there.
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We had the Lounge long before that!
"If we don't change direction, we'll end up where we're going"
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Well, to be fair, social media is a major factor in the recent idiotizing of the masses.
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It's become contagious.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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I don't think it's made any of us more of an idiot than we already were. It's just easier to publicize it to a larger audience.
Software Zen: delete this;
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