Pete By: Pete

Project 366 #96: 050412 The Edge Of Space

Do you remember this one? A few years ago we put a SAN into the server rack at work.


We've done well, but the problem of storage is one that never, ever goes down. The problem is the sheer volume of 'stuff' and the difficulty in differentiating between what you need to keep and what you don't.


Eric Schmidt liked to pimp the idea that we create as much data every two days as we did from the dawn of civilisation through to 2003.


Is it true? Who knows. I think it's possible if we bear in mind what we're storing. We store everything. Usually twice. And so do other people. How many copies do you think exist of any email you send? One in your sent folder and one in your recipients inbox is just the tip of the iceberg.


Anyway, I digress. We're running out of space, and because little Sally who is now 18 really wants to keep the 'All About Me' Powerpoint Presentation she created when she was 11, we needed to augment.


The photo shows the storage array with an additional external storage box. The top one is populated with 750Gb drives, and the lower one with 12 1Gb drives. Let's see how many days that takes to fill up. :)

  • Keith Williamson 3y

    How on earth the system works out which drive the information is stored on beats me. Am I being thick here, would it not take up less space if you deployed say 2Tb drives?
  • Pete 3y

    It would Keith, but there's all kinds of reasons why we chose 1Tb, including speed, transfer rates, reliability, platter densities and not least cost - these server drives are very, very expensive.
  • comedy hair1 3y

    Lots of techy talk but hey I loved the photo :-)
  • Dave 3y

    If you're interested...the 1Tb drives were chosen as a compromise between storage capacity, lost space due to the implementation of a RAID 5 array (which loses 1 drive of storage) and cost. Also, the probability of a hard disk sector fault is significantly higher with 2.0Tb drives (just because of the sheer number of sectors) which can potentially take down an entire array. With this config I can run two 5.0 Tb RAID 5 arrays giving 10.0Tb of usable space - at the right price and with a lower probability of hardware sector failure. Hopefully it'll do the job for the next few years! Nice picture too!
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Taken on April 5, 2012
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