Changing operating system on home network

Discussion in 'Home Networking' started by Bob H, Jan 26, 2012.

  1. Bob H

    Bob H Guest

    I have installed Windows 2008 SP1 networking system, but it keeps losing
    connection with my other computers, and I am getting a bit fed up with
    it. After a search on Google , its a known problem apparantely.

    Anyway,l have WHS 2008 on a separate drive to my Raid1 drives, which is
    driven by a hardware raid controller, If that is right, so its not
    linked to WHS 2008.

    What I want to do now is:
    Either disconnect the drive with WHS 2008 and install Freenas on a USB
    stick, or install Ubuntu Server edition on another separate drive.

    My question is , if I do either of those things will I lose all my files
    on the raid1 drive.
    If that is the case I will have to move them to another PC.

    Thanks
     
    Bob H, Jan 26, 2012
    #1
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  2. Bob H

    Dave Saville Guest

    You mean you have no backup? Anything of value you should have at
    *least* two copies of - Preferably well away from the primary.
     
    Dave Saville, Jan 26, 2012
    #2
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  3. Bob H

    Bob H Guest

    I think I have not explained it properly.

    I have a HD which presently has WHS2008 SP1, and that is backed up to a
    separate partition on the same drive.

    I also have 2 1tb HDs' in raid1 configuration. This or these drive do
    not have any OS on them at all, just files etc

    If I use Freenas on or from a USB stick, I won't be using the HD with
    WHS2008 SP1 on it as I will disconnect or remove it from the machine.

    If I use Ubuntu Server, then I will wipe WHS 2008 SP1 from the said
    drive, and install Ubuntu on that drive.

    I would like to know if I do either of the above will the files on the
    raid1 drive(s) become unreadable/unusable or deleted.

    Thanks
     
    Bob H, Jan 26, 2012
    #3
  4. Bob H

    Rob Morley Guest

    A copy on the same disk doesn't really count as backup.
    Just boot a Ubuntu CD and see if it can see your RAID array. I expect
    it will.
     
    Rob Morley, Jan 26, 2012
    #4
  5. Bob H

    Daniel James Guest

    That "backup" may protect you from, say, accidentally deleting the wrong
    file ... but it won't protect you from disk failure.
    ... and do these contain further copies of all the files on the first
    disk? You better hope so.

    How are these disks connected? Are they attached to the same motherboard
    as the first hard drive, or are they in a separate box connected somehow
    to the first (e.g. a NAS)? If they're directly connected, how is the
    RAID managed (is it some ghastly chipset thing for which drivers may
    only exist for Windows, or what?). What filesystem is used on the RAID
    disks?

    The answers to your other questions depend on the actual setup you have
    ... but I'm guessing that you probably just have a couple of internal
    drives in that same PC running as a RAID1 mirror controlled by the
    chipset on the motherboard. In this case you may well not be able to see
    the RAID mirror at all from another OS as there may not be a chipset
    RAID driver for FreeNAS or Linux for that chipset -- it depends on the
    chipset/motherboard.

    If you're using NTFS on the RAID mirror that may not be supported
    out-of-the-box by another OS. NTFS support for Linux is getting pretty
    good, these days, but not every distro enables it as standard ... and it
    won't run as well under linux as a native linux filesystem. If you want
    to switch to Ubuntu or FreeNAS long-term I would think about copying the
    data off and reformatting the drives with a different filesystem.

    If the RAID disks ARE just extra drives in the same PC as the first
    drive you mentioned then all three disks could easily be taken down by,
    say, a faulty PSU ... and you haven't really got a backup at all. A lot
    of fault-tolerance, but no backup.

    Cheers,
    Daniel.
     
    Daniel James, Jan 27, 2012
    #5
  6. Bob H

    Bob H Guest

    Well I thought that raid 1 means duplicate copies or similar, as in the
    files are written to both disks.
    Both of the 1TB drives are connected to a Raid hardware controller on
    the same motherboard as the the 1st disk or the one which has WHS2008
    on. This is connected directly to the motherboard sata port.

    The filesystem is NTFS on the Raid drives, and there is the stumbling
    block as I have since realised that it would be a different filesystem
    for both FreeNAS and Ubuntu, so yet I will move everything onto another
    drive before I use any other OS for my home server.

    Thanks
     
    Bob H, Jan 27, 2012
    #6
  7. Bob H

    Rob Morley Guest

    My Ubuntu happily uses NTFS data partitions (i.e. accesses/modifies old
    Windows installations), I expect FreeNAS does too.
     
    Rob Morley, Jan 27, 2012
    #7
  8. Bob H

    Gunnar Gren Guest

    Freenas does not write to ntfs file systems, as far as I know.
    There is no driver that can write to ntfs in freebsd. You'll
    have to install 3:rd part driver for that, like fuse-ntfs. It's in ports.
     
    Gunnar Gren, Jan 28, 2012
    #8
  9. Bob H

    Gunnar Gren Guest

    Never mind. Freenas has support for ntfs but freebsd has not.
     
    Gunnar Gren, Jan 28, 2012
    #9
  10. Bob H

    Gordon Guest

    Raid 1 is two drives one copy. However yes, two backups are really
    required to be safe. Murphy loves to arrive at certain times ;-
     
    Gordon, Jan 28, 2012
    #10
  11. Bob H

    Gordon Guest

    FreeNas requires a seperate/dedicated machine/hardware. NAS is after all
    Network Attached Storage. Severs, likewise, are seperate machines/hardware.
    While one can self serve e.g apache, of NFS share it is really not the norm.
    Good idea, after you get the FressNAS, Ubuntu server up and running. Backup
    first though. Now
     
    Gordon, Jan 28, 2012
    #11
  12. Bob H

    Gordon Guest

    Murphy here. I await the death of your HD. (Both partitions will be dead.)
    Backups are about seperation, and numbers of copies. Lots of both.
    Please, do yourself a favour and backup a wee bit and understand/learn how
    things operate. A little knowledge is a dangerous thing, as the saying goes.
    If you were running an airline I would not fly with you. ;-)

    Plaese back up onto a seperate medium (extrenal HDD) and put this in the far
    cupboard. Trust me, a external HDD not connected holds it data rather well
    in cases of need.
     
    Gordon, Jan 28, 2012
    #12
  13. Bob H

    Gordon Guest

    Yes, that is correct. However RAID 1 should not be considered a back up.
    Reason is that both disks are live, and it is possible for something to go
    wrong and take out both disks, or getting the data off them.

    As Daniel said, RAID 1 is fault tolerant. Which is not the same as a backup.

    A backup is a copy of the data stored someplace(s) else which are not
    connected to the primary machine.
     
    Gordon, Jan 28, 2012
    #13
  14. Bob H

    Gordon Guest

    I think not. FreeNAS takes over the hardware. (If you say okay)
     
    Gordon, Jan 28, 2012
    #14
  15. Bob H

    Bob H Guest

    I started moving everything from the server to another HD last night,
    and WHS2008 lost connection part way through, so I am having to start
    again just now.
    Only another 5 hours to wait!
     
    Bob H, Jan 28, 2012
    #15
  16. Bob H

    Dave Saville Guest

    Mirrored drives are great for availability but no good at all for
    backup. Screw one and the mirror is instantly screwed. The difference
    between archive and backup is another one that throws a lot of people.

    When I started out programming, way back on IBM 360's, I was taught
    "the first law of systems programming - take a back up" it was some
    years before I found the second law: "make sure you can read it" :)
     
    Dave Saville, Jan 28, 2012
    #16
  17. Bob H

    Daniel James Guest

    Yes, RAID1 gives you two identical copies of the data on two disks (a
    "mirror" -- one disk is a reflection of the other).

    The point I was making and to which I think you were replying was:

    That is: Does your RAID1 array contain a copy of all the files on your
    first (non-RAID) hard disk?

    It may do, but you don't say. If it doesn't then (both copies of) the
    data on your first drive will be lost if that drive fails.
    So, that's "chipset RAID", which is a hybrid software/hardware RAID in
    which the chipset does some of the RAID calculations in hardware but the
    whole has to be controlled by a driver. Such a setup does give you a
    little more speed than pure software RAID, but gives neither the
    transparency (you still need a driver) nor the speed advantages of true
    hardware RAID.

    These hybrid setups also suffer from an over-dependence on the hardware:
    If your motherboard dies you will have to replace it with one that has
    the same RAID chipset to be sure of being able to read your disk array.
    Pure software RAID does not suffer from that.

    Cheers,
    Daniel.
     
    Daniel James, Jan 31, 2012
    #17
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