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To Purge Or Not To Purge Your Data

Posted by CmdrTaco on Thu Sep 18, 2008 10:15 AM
from the i-much-prefer-the-binging-part dept.
Lucas123 writes "The average company pays from $1 million to $3 million per terabyte of data during legal e-discovery. The average employee generates 10GB of data per year at a cost of $5 per gigabyte to back it up — so a 5,000-worker company will pay out $1.25 million for five years of storage. So while you need to pay attention to retaining data for business and legal requirements, experts say you also need to be keeping less, according to a story on Computerworld. The problem is, most organizations hang on to more data than they need, for much longer than they should. 'Many people would prefer to throw technology at the problem than address it at a business level by making changes in policies and processes.'"
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  • Easier to keep (Score:5, Insightful)

    by Geoffrey.landis (926948) on Thursday September 18 2008, @10:18AM (#25054505) Homepage
    The problem is that it's easier to just archive the cruft stuff than it is to go through it all and figure out what's worth keeping.
    • Re:Easier to keep (Score:5, Insightful)

      by Daimanta (1140543) on Thursday September 18 2008, @10:22AM (#25054573) Journal

      True, proper archiving takes huge amounts of time since it adds overhead to your operation.

      In an ideal world, everything that you store is automatically labeled and old data will automagically be purged. But storing all kinds of shit is just that much easier. It also doesn't help that data storage is so dirtcheap. 1TB can be bought for around $100 if I am not mistaken. It doesn't pay to kill old useless stuff you have floating on your hard disk.

      • Re:Easier to keep (Score:4, Insightful)

        by Sobrique (543255) on Thursday September 18 2008, @10:24AM (#25054597) Homepage
        Add to that legal requirements of retention - you'll need to filter your 'customer communications' from your 'shopping lists'. That's what actually makes this a nuisance - the possibility that there will be legal action in 5 years time, that you'll need to fight.

        Yes, less data need to be kept, but first there needs to be a _massive_ re-education of the 'data packrat' culture that the users of it have.

        • Re:Easier to keep (Score:4, Interesting)

          by BobMcD (601576) on Thursday September 18 2008, @11:29AM (#25055719)

          you'll need to filter your 'customer communications' from your 'shopping lists'

          Actually, I thought it was a fairly common legal tactic to make the data as difficult to actually find as possible, without revealing too much to the other side.

          "They want records from three years ago? Send a truck with printouts of all the files we have, that'll keep them busy..."

          Does anyone know that this is no longer the case?

          • Re:Easier to keep (Score:5, Interesting)

            by cmause (903686) on Thursday September 18 2008, @11:53AM (#25056165)
            There used to be a sort of gentlemen's agreement between attorneys to not dig in to electronically stored information (ESI). That was back when everything important ended up on paper anyway, which was discoverable.

            As time went on, fewer things ended up on paper, but the rules of discovery didn't evolve. That was the time of backing up a U-Haul full of printed out copies of every file, e-mail, etc. that a company had. Now the opposition had to dig through mounds of trash in the hopes that they will find that one incriminating document.

            Then attorneys got more savvy, and in the so-called Rule 26 (refers to the Federal Rules of Civil Procedure), the attorneys would agree on the format of ESI to be exchanged. In December, 2006, the Federal Rules of Civil Procedure changed to directly address ESI and electronic discovery.

            Now, in litigation, parties may still get obnoxious amounts of data, but it's electronic. Once it's processed and converted (usually to TIFFs with extracted text, but sometimes PDF), attorneys can do what amounts to a Google search through the files and find what they want pretty quickly. In fact, paper documents are usually scanned and OCRed so they can be handled and searched in the same manner.

            Actually, I thought it was a fairly common legal tactic to make the data as difficult to actually find as possible, without revealing too much to the other side.

            "They want records from three years ago? Send a truck with printouts of all the files we have, that'll keep them busy..."

            Does anyone know that this is no longer the case?

            So no, it's no longer the case. But the first guy who did it must have thought he was pretty funny.

    • Re:Easier to keep (Score:5, Insightful)

      by sunking2 (521698) on Thursday September 18 2008, @10:28AM (#25054679)

      Cheaper to keep. Every hour I waste cleaning house costs more than it does to keep it stored. Storage continues to get cheaper, salaries typically don't. Sure, that $1.25M is a big scary number. But nothing compared to the salaries/benefits at a 5000 person company. Now you can argue the cost of data retrieval goes way up because chances are it'll take a hell of a lot longer to find, but that's a different argument altogether and you can just as easily question what the cost of not being able to recover something that was cleaned by accident is.

      • Re:Easier to keep (Score:4, Interesting)

        by COMON$ (806135) * on Thursday September 18 2008, @10:52AM (#25055099) Journal
        What I want to know is how these numbers are broken down. $5 per gigabyte to back up? Maybe if you factor in the cost of a robotic library. Considering that tapes currently run about $30 a pop for for 800GB and that I am on a 12 month rotation, I still don't come NEAR that price. 1.25 million for a 5000 person company? What kind of company? 10GB average is about 9GB over my average user here. Even when I worked at a larger company, we still weren't even breaching 700MB average INCLUDING e-mail.

        Lovely scaremongering, but what did they mean by legal e-discovery? The time it takes to sort through the data or what?

        • Re: (Score:3, Insightful)

          The $5 presumably includes the physical media, the backup operator's time spent configuring the system, the hardware for performing the backup, and the safe, secure, off-site storage costs. 10GB per years is a lot more than I produce - my PhD was only 1.5GB in total, including temporary files (build cruft and so on), with only 210MB needed for the subversion repository (176MB after bzip2) - the bzip2'd repository of my book (including all text and code examples) is only 4.6MB. My mail folder is only 3GB,
      • by mkcmkc (197982) on Thursday September 18 2008, @11:28AM (#25055695)

        I did a back-of-the-envelope calculation on just this question in 2004, and estimated that file deletion was not productive unless we could do it at a rate of at least 17MB per minute (of labor). Four years later the threshold is probably at least 45MB per minute.

        Generally, this means that if we can blow away whole disks or huge directories of data, it may pay off. Users going through their files one by one is usually an absolute waste.

    • Re: (Score:3, Insightful)

      The problem is that it's easier to just archive the cruft stuff than it is to go through it all and figure out what's worth keeping or training staff to organize their data and retain only that which is necessary .

      There, fixed that for you. Meta-tags and other efforts might change this in the future, but until there is a generalized understanding of things that should be archived and things that should not, and a better way to store, find, retrieve, and utilize company data, there will be tons of data save

    • Re:Easier to keep (Score:5, Insightful)

      by daeg (828071) on Thursday September 18 2008, @10:49AM (#25055045)

      The bigger problem is that you will fight different battles. If you're fighting a sales rep that sold your clients to a competitor, you want as much ammunition as possible. If a client is suing you for incorrect information relayed 8 years ago and you're probably guilty, you want as little information as possible.

    • My last job (Score:3, Interesting)

      My last job had some files from the 1890's. The company had moved from New York to New Jersey to Houston in all that time. I can't imagine that material would ever need to be used, or would be called up during a legal investigation. Even if it were, would the authorities penalize a company for files that were that old??? At some point, everything is trashable or museum material.

      This company occasionally needed blueprints from the 1930s/1940s (great lakes ships), but none of their ships went back much
      • Re:Easier to keep (Score:4, Interesting)

        by Chrisq (894406) on Thursday September 18 2008, @11:18AM (#25055511)
        We went paperless, and when application forms, etc. arrive they are scanned and stored. Examination of the data shown that very often people would print out all the existing infromation on a customer and add it to the pile sent for scanning.

        Result, look up a customer and you would find some files scanned half a dozen times.
  • Huh? (Score:5, Insightful)

    by qoncept (599709) on Thursday September 18 2008, @10:22AM (#25054575) Homepage
    $250k a year for a 5000 employee company? To put it in perspective, if the average employee at this company is making $60k a year, this company will be paying $1.5 billion in salaries over the same 5 years. To be fair, I think the estimated cost from the article is very much underestimated. But while corporate storage costs more than you'd think, and companies are definately storing a whole bunch of data they don't need, what about the costs of reviewing and purging that data? That is straight up time, whether it's reviewing existing data or spending the time to create guidelines for which data to keep. And time costs money. More than storage.
  • by arth1 (260657) on Thursday September 18 2008, @10:27AM (#25054659) Homepage Journal

    10 GB of data per user, sure.
    10 GB of user data, no way.
    If assuming 300 work days per employee, that would mean that the average employee creates 1.2 kB of data per second.

    The only way this could be true is if you count data that isn't user generated, and they count the total data storage for the company and divide it by employees.
    If so, users deleting their e-mails won't have much of an effect.

    • If assuming 300 work days per employee, that would mean that the average employee creates 1.2 kB of data per second.

      Top posting and absence of editing by Microsoft Outlook users engaged in a brief inter-departmental discussion could easily account for that volume.

      Is that what you meant by "isn't user generated"?

  • by paulhar (652995) on Thursday September 18 2008, @10:29AM (#25054703)

    Apps aren't really well designed for this in mind. They don't come at the problem from a "document lifecycle" perspective but instead a "document creation".

    This is generally because data has a variable lifespan. Lets take an email as part of a project as an example. As the author I may decide that the email isn't needed after a week so set an expiry of 1 week. But you, as the recipient, may take that email and turn that into several tasks so for you the email is much more important and thus want to keep it for much longer.

    Users aren't really going to be good at making these decisions unless some application continually bombards them with "go check the status of these 1000 documents you've got".

    • Mod parent way up! (Score:4, Interesting)

      by khasim (1285) <brandioch.conner@gmail.com> on Thursday September 18 2008, @12:13PM (#25056463)

      Congratulations. You're the first person I've seen who understands that.

      Accounting understands the need to close one year and open the next. They have processes for what is carried over and how it is identified.

      Yet no other department (or application) understands the need to close old data and archive it.

  • Email Attachments (Score:5, Insightful)

    by whisper_jeff (680366) on Thursday September 18 2008, @10:40AM (#25054903)
    I don't know what most major companies' policies are regarding backing up emails (just back up the text or back up emails plus attachments) but, as but one example, I'm sure this would be an easy spot for most companies to dramatically reduce the amount of storage space required. Most business communications I see from corporate personnel have various attachments on every email - things like logos, custom backgrounds, etc. Forget getting rid of all the unnecessary attachments - getting rid of the "look at my pretty email that looks like a page from a spiral-bound notebook with my company logo at the bottom" images, and the hundreds and thousands of duplicates of those images, would reduce storage requirements, bandwidth requirements, and probably make corporate communications look more, you know, professional. So many emails are filled with unnecessary garbage and, if that's being backed up, that garbage can get costly.

    Then again, I'm biased - I believe email should just be pure text. Perhaps that's a sign that I'm now old...
  • Communicate less (Score:3, Interesting)

    by Yvanhoe (564877) on Thursday September 18 2008, @10:51AM (#25055083) Journal
    In a world where backup takes money, a law that says to companies "keep every communication backuped" is saying essentially the same thing as "communicate less".
  • put everything on one disk drive, unRAIDed. when it fails, problem solved. voila, built in obsolescence

    • It's not so much that you want your company to have a leg to stand on, its that you don't want your legal opposition to get their foot in the door. Innocent until proven guilty remember?
    • Re:hmm (Score:5, Interesting)

      by MrMr (219533) on Thursday September 18 2008, @10:34AM (#25054801)
      The top 500 company I worked for did just the opposite: Destroy all data in case a legal issue comes up.
      They called it 'desk cleanout day', and unless you were an official dedicated contact on a particular subject you were to wipe all correspondence of more than a year old.
      (There were also other grades of information, but erase after a year was the default).
    • Additionally, there are many businesses that don't understand their data retention requirements beyond 'we need to keep some data for 10 years', so instead of compartmentalizing their data and saying 'keep this for 10 years, that for 5 years, and purge this every year and that every 3 months', they just keep everything. Further, if they have a data retention requirement for 3 years or 10 years, they might wait longer before purging it just because it's easier to keep it then it is to go find and remove the

    • Unfortunately, writable DVDs are not an acceptable archive medium, and a stack of disks with written labels is not an indexing solution that will scale beyond one person.