Drive Map Survey

  1. Say, you start with a single 250Gb internal drive.
    • mosFs will provide the full disk size, unprotected.
  2. When your first drive start to get full (or you are storing data where you need some level of redundendcy). You add a 500Gb drive.
    • mosFs will provide a mirror (data duplication) for the first 250Gb, then unprotected for the remaining 250Gb
    • Providing: 250Gb of protected and 250Gb of unprotected data.
  3. Later, you add an additional 500Gb drive.
    • mosFs shuffles things around (silently) to protect you data and provide a more efficient redundency.
    • The first 250Gb of all three disks will be used in a RAID5 configuration, then the remaining 250Gb of the two 500Gb will be mirrored.
    • Providing: 750Gb of protected data.
  4. Say the original 250Gb drive failes.
    • mosFs is able to provide you will full access to your files
    • Some of your data is at risk - any further failures will result in loss of data
  5. You 'could' decide to tell mosFs, that you wish to run with this configuration for a while and to 're-protect' your data.
    • mosFs can then re-shuffle things around (providing there is enougb available space) to give you full protection.
    • The the remaining 500Gb drives would be put into mirroring, giving 500Gb of protected data
  6. Instead, you decide to replace the failty drive with a 1Tb drive
    • mosFs shuffles things around (silently), to give you 1Tb of RAID5 from both 500Gb disks, plus the first 500Gb of the 1Tb drive, plus 500Gb of unprotected data.
  7. We could go on... okay, one final example. You add an additional 1Tb drive.
    • again mosFs shuffles things around, reshaping the store to give you a full tB of available protected storage.