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Why Do Companies Backup So Infrequently?

Orome1 writes "Businesses are on average backing up to tape once a month, with one alarming statistic showing 10 percent were only backing up to tape once per year, according to a survey by Vanson Bourne. Although cloud backup solutions are becoming more common, still the majority of companies will do their backups in-house. Sometimes they will have dedicated IT staff to run them, but usually it's done in-house because they have always done it like that, and they have confidence in their own security and safekeeping of data."

12 of 403 comments (clear)

  1. To Tape... by sensationull · · Score: 5, Insightful

    Portable HD is cheaper and faster, even for stacks of them. Small businesses may be using a bunch of these in place of tapes.

    1. Re:To Tape... by adolf · · Score: 5, Informative

      Indeed. My own [small place of business] does its backups this way with Acronis:

      -
      Every day, a drive is plugged in.

      Every evening, an incremental backup is performed on that drive that is consistent with whatever the backup drive already had on it. (It just takes a few minutes for Acronis to get this done.)

      After that it is removed and taken off-site. A different drive is plugged in the following day.

      Fridays are special, in that the drive gets automagically erased, and a full backup is performed mid-day. But then the evening incremental ritual is the same as any other day of the week.
      -

      Losing a backup disk is, at most, 24 hours worth of loss, and only then if it is coincident with losing the main system.

      FWIW: We use the cheapest 2.5" laptop drives available, in the cheapest bus-powered 2.5" USB enclosures we can get our hands on (I think the last round of them cost us $5, each). And we test our backups randomly, whenever the accountant decides he wants to see what things looked like last week/last year. Acronis then cheerfully does a bare-metal restore from [random backup drive] onto our spare server-box, with 100% success.

      Now: We're not a media company. We don't have tens of TB of changing data to back up on a daily basis. But most other small(ish) companies don't either...

      Who needs tapes?

    2. Re:To Tape... by aix+tom · · Score: 5, Informative

      Perhaps for *very* small businesses with not much data, or where the restore time is not a critical factor.

      Even with our 32Mbit connection at work it would take about 40 hours in transfer time alone to get our data "out of the cloud" in a disaster scenario. (And part of that bandwidth would still be needed to keep other operations running, so it might even take longer) You can perhaps make small, incremental backups into the cloud, but when you need the data in an emergency you need it as fast as possible. Restore from tape took two hours. (We had a chance to do it "for real" earlier this year ;-P )

    3. Re:To Tape... by gl4ss · · Score: 5, Insightful

      well, doh. do it to tape once a year. it's unlikely all hd's would fail at the same time.

      checking _what_ was backed up on the other hand.. how many companies check that..

      --
      world was created 5 seconds before this post as it is.
    4. Re:To Tape... by Eivind · · Score: 5, Insightful

      The thing is though, tape *sucks*.

      The most common reason for needing a restore, is accidental deletion. With modern backup-systems using online disc, the user can in this case simple open his backup-client, find the file, and click "restore" - time elapsed 2 minutes, help needed, none.

      Tape means talking to IT, and wait for hours, at significant personnel-cost. Unless there's a fancy automatic tape-switching-robot kind of deal, but if there is, the price is no longer $30/TB.

      Yes you need off-site-backup in addition, and it's acceptable for that one, to have higher latency, so perhaps tape is okay for that.

    5. Re:To Tape... by Anonymous Coward · · Score: 5, Interesting

      Disclosure: I work in backup and recovery for a living. I've been doing TSM professionally for the past six years.

      So let's look at this idea that portable HD is cheaper and faster. I've managed backup systems that were backing up tens of terabytes every day. Let's say three 3 TB HDDs for the sake of discussion. Let's say five weeks' worth of data retention. That's 5*7*3 = 105 hard drives that need to be managed - call it 110, to take into account the fact that there are going to be a few going off and onsite at any given point in time.

      How reliable are those hard drives? How long until they fail? Bear in mind when considering your answer that hard drives are designed to be stuck inside a chassis that stays put (for the most part) - pulling them out of the system and lugging them halfway across town is not within their design goals. And then you need to worry about the cost of a hot-swap chassis so you can pull the drives out, and shove them back in, every day. Oh, and don't forget that most plugs have a limited life span - probably in the hundreds of swaps, maybe thousands (I don't know, and I'm happy to hear solid data about this.)

      And how long does it take to fill up a hard drive, anyway? Take the WD Green 3 TB as an example: 110 MB/s (source), equals about 7.5 hours, best case. Sure, you can throw more hard drives at the problem in parallel, but that just exacerbates the whole question about reliability in transit. The Hitachi 3 TB is faster - 207 MB/s - which takes about four hours to fill up. That's best case scenario, based upon the maximum data transfer rate - guaranteed it's going to slow down as the drive fills.

      Now consider tape. Consider wikipedia's information on LTO when reading this. LTO4: 120 MB/s native, up to 300 MB/s compressed (two hours to fill). LTO5: 140 MB/s native, 350 MB/s compressed (three hours to fill). Pretty damn reliable in transit; they're designed to sit happily in their little plastic shells, in a box, and get thrown around (not quite, but they can certainly take more punishment than a hard drive can.) Capacity per cartridge: 800 GB/1.5 TB native (4/5); 1.6 TB/3 TB compressed. If you have money to burn, you could go for Oracle's T10000C drive: 5 TB native capacity, 240 MB/s native throughput (and that's before you get into the whole question of compression.)

      Now let's get onto the whole subject of financial data, Sarbanes-Oxley, and WORM media (so you know the data hasn't been altered since it was written out) ...

      Sure, tape sucks. It has major issues when data is scattered all over the place; mount time takes a while; and the drives need regular love and attention. But here's the thing - it survives today because it's better than the alternatives in its niches, and trust me, there's plenty of niches where tape fits in far better than the alternatives.

      If you only have a couple of TB of data to backup, the cost of setting up tape infrastructure will probably not be worth it. But when you're talking hundreds of TB - or better, petabytes of data (don't laugh, one client I did work for had over 2 PB of data in their tape library) - the cost equation swings over pretty damn fast. Tape is not dead. Far from it. I can't see the likes of IBM investing in developing LTO6 and LTO7 if there was no use for it. And why would Oracle sell a tape library that scales to 100,000 slots if there's no demand for it? It's not about how to get the most bytes for your dollar - it's also about reliability, and that gets down to the usage. If I suggested portable hard drives to the clients I do work for, I'd be out of a job - because they simply won't cut it for their needs.

  2. Easy by MortenMW · · Score: 5, Insightful

    It's expensive, so management does not really want to pay for new tapes, a disk-based system or cloud backup. It requires personnel, which management does not want to pay for either. It's boring for the persons involved (who likes testing their backup?).

  3. risk by Tom · · Score: 5, Insightful

    Most companies have no risk management, and no clear picture of the risks their business faces.

    The result of "intuitive" risk-non-management is that the usual human flaws have full impact. Basically, aside from a narrow middle ground, all risks are wrongly estimated.

    --
    Assorted stuff I do sometimes: Lemuria.org
  4. The Benefit of Backups is Non-Obvious by bazald · · Score: 5, Interesting

    Seriously. Most people aren't willing to put in the effort to determine just how bad things would be if they had to resort to their (often inadequate) backups, and therefore they aren't willing to pay the time and capital to get adequate backups.

    If you want your company to get better backups, run a simulation of what would happen if something failed. What's the best recovery you could do? What business would you lose? Then calculate the probability of that failure occurring, and be generous.

    --
    Insert self-referential sig here.
  5. Wouldn't have happened if you used vi by dutchwhizzman · · Score: 5, Funny

    Mod me down for trolling all you want, he deserved the pun after not making backups for 15 years consecutively.

    --
    I was promised a flying car. Where is my flying car?
  6. Re:Computers are too reliable by identity0 · · Score: 5, Funny

    Then a few weeks ago another unit on the industrial was torched -- arson. I have finally pursuaded them ...

    Ahhh yes, the old "Nice data you have there, be a shame if something happened to it" trick.

    No need to explain, friend, we all know what happened there.

    I am curious if you did the deed yourself or contracted it out to a professional, though. ;)

  7. Re:No wonder they are switching to clouds by bertok · · Score: 5, Insightful

    I hope you're a troll, because if you're not, this is just about the most insanely fucked up attitude to data protection I've ever seen.

    A blind "Let's just backup the whole server" isn't an effective backup strategy ...

    If I was your boss I'd fire you on the spot for being that monumentally stupid. The cost ratio of an additional ~20GB of tape compared the enormous cost to the business if the server can't be restored quickly and reliably is staggering. Think $1 saved while risking millions of dollars of potential lost work! (1.6TB LTO5 tape = $80)

    a) "what if you upgrade to a larger disk" -- there is no backup system on Earth that can't restore to bigger disks. Most systems can restore to smaller disks too.
    b) "what if the server is slower than others and people start moving their data to something" -- you back up both of them. Restoring too much is almost never as bad as restoring too little.
    c) "just blanket-backing-up is likely to lead to problems later on" -- no, it doesn't. Achieving 100% coverage ensures that no matter where you data was on a server (or which server), it's on a tape somewhere.
    d) "notifying IT of new things that need to be backed up" -- have you met humans? This never happens reliably, and can't ever be made reliable.

    Back in the real world, a 100% complete backup of a typical Windows server can be restored without knowing the password, to dissimilar hardware (even virtual machines), and without needing the "original install disks". When it's done, it'll boot up, maybe reboot once or twice to fix up its drivers, and then your server is back, working as it did before. Compare that to a "data only" or partial backup. Now suddenly you're chasing down design documentation, passwords, IP addresses, software, serial numbers, and you haven't even started to restore anything yet. The clock is ticking, and the customer is breathing down your neck.

    A week's work should take no more than two weeks at ABSOLUTE maximum to recreate

    Recreate from what? Memory? Including data that was 100% electronic, and never seen by a human? How do you recreate your emails? How do you recreate your audit logs? How do you type back in non-textual data like digital images or audio recordings? How would you even know what's missing?

    I'd rather have a decent monthly, than an imperfect daily

    That's a false dichotomy. The total data stored is the same, you're just altering the frequency. The same amount of storage is needed, the same bandwidth is needed, and it ends up costing the same.

    I'd rather have three backups a day than monthly backups. Losing a day of work could mean a contract fails to go through. I've been in a position twice now where users have come to me literally crying and begging to retrieve a document they only started working on that morning that they had deleted accidentally... at 8pm, minutes before a deadline for a multi million dollar deal. After experiences like those I've often set up incremental backup frequencies as rapid as 15 minutes.

    So lets recap... your sum total DR experience is you once walked into a poorly supported environment, and gave them some even worse advice, without ever being in a position to be responsible for an actual real world recovery.

    Well, take some advice from someone who's restored terabytes of data, and was responsible for the protection of over a petabyte spread across thousands of servers at over a dozen organisations:

    #1 There are no time machines -- you cannot go back in time to fix a mistake in your backup strategy after a disaster. It's too late. You've fucked up, it's your fault, and you can never, ever, fix it.

    #2 Back up everything -- I love genius IT folk who like to shave 1% off their backup times by excluding those useless temp and log files, also excluding 'useless junk' like their database transaction logs in the process.