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Windows Server 2008 R2 Thread, Considerations for rebuilding a DC? in Technical; Originally Posted by Ric_ Assuming that this is a 'normal' set up, the LUN used by the cluster is just ...
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    Quote Originally Posted by Ric_ View Post
    Assuming that this is a 'normal' set up, the LUN used by the cluster is just the same as any other LUN, except 2 hosts can connect. The fileserver role is cluster aware so that works out which node should be writing and when.

    If you virtualise your file server, it will move between your hosts in case of hardware/software failure there. In the less likely event of software failure on the fileserver, just recover it from a snapshot or VM backup and re-join to the domain (the server will hold no data as it will use the software initiator to connect back to the data on a SAN).

    The main point of failure is your disk array... using the VM method, you could lose a host and a storage controller in each SAN and it will all still work. If you lose your disks in either SAN, you are screwed.
    Thank you...

    Now can I ask, what would we gain from using VM rather than using hardware to cluster File Services?

    If we use a VM for file services, as you suggest it can be recovered by a snapshot but during that time I would assume the file access will be unavailable to anyone...if we use hardware to cluster it then surely we have a little more redundancy for failure and keeping the data available to stop the moans, not that staff moan of course, just an example

    Sorry to keep going over the same point, I just want to get this moving...

    The aim is to end with DCs being on their own as recommended

  2. #32

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    Quote Originally Posted by rodent43 View Post
    Thank you...

    Now can I ask, what would we gain from using VM rather than using hardware to cluster File Services?

    If we use a VM for file services, as you suggest it can be recovered by a snapshot but during that time I would assume the file access will be unavailable to anyone...if we use hardware to cluster it then surely we have a little more redundancy for failure and keeping the data available to stop the moans, not that staff moan of course, just an example

    Sorry to keep going over the same point, I just want to get this moving...

    The aim is to end with DCs being on their own as recommended
    By the sounds of it, you don't have enough hardware to have your 2 physical DCs and create separate clustered fileservers. This option gets you up and running quickly although probably sacrifices a little performance.

    It is highly unlikely that the minimal Windows install for a VM will corrupt its OS in such a way that it stops functioning but if it does, a VM snapshot will take maybe 1 minute to restore and another minute to rejoin to the domain and reboot.

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    rodent43 (26th July 2012)

  4. #33
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    Quote Originally Posted by Ric_ View Post
    By the sounds of it, you don't have enough hardware to have your 2 physical DCs and create separate clustered fileservers. This option gets you up and running quickly although probably sacrifices a little performance.

    It is highly unlikely that the minimal Windows install for a VM will corrupt its OS in such a way that it stops functioning but if it does, a VM snapshot will take maybe 1 minute to restore and another minute to rejoin to the domain and reboot.
    Just to clarify, the mighty @Ric_ has provided some sound advice there, but he does mean just one snapshot of the original server build. You may or may not know this, snapshots can be harmful to a virtual env. It can cause performance issues if you store multiple snapshots or store them over a long period of time.

    Good luck guys!
    Last edited by Ric_; 26th July 2012 at 02:07 PM.

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    rodent43 (26th July 2012)

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    Thank you both...you have had great input

    money is always an issue with us but I do have some old HP Proliant DL380 G5 generation that I could make a temp server on until we get the funding or we have enough storage on our VM san to house it

    We have gotta get a move on I guess...I really appreciate the thoughts/comments and advice from you all...just ignore shadowx, he is young he is good really just not so keen on MS/Apple/Blackberry/Olympics or anything that is not Linux really

    Its not a quick or impossible job but the jobs from it could be interesting, one I can think of is having to alter all our backups that we have housed externally anyway

    I am sure we will post updates/questions for you to follow up on...I look forward to then

    Thanks once more

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    Right boss, im off down the pub, have fun doing all that work

    Though I hate the pub, it's not linux-y enough for me!

  8. #36
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    lol, take red hats for everyone to wear, that should sort it out!

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    Quote Originally Posted by Beard View Post
    lol, take red hats for everyone to wear, that should sort it out!
    stop debian such a wally....

  10. #38
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    It's common Centos....

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    @Beard and @Domino - stop being so Slackware and get some work done

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    In his defense, I am a Linux fan to

    I was hoping I would get some rep for apologizing for him :P

    Right I am gonna kick him into getting some of the old hardware out...we will let you know how its all going I'm sure

  13. #41

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    Just use the G5s as your DCs (or at least one of them... they don't have to match).

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    Yeah, we have plenty of G5s in service here...

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    Quote Originally Posted by Ric_ View Post
    Just use the G5s as your DCs (or at least one of them... they don't have to match).
    Quote Originally Posted by Beard View Post
    Yeah, we have plenty of G5s in service here...
    They are a few years old but I think that would be the quickest/best option right now and I will see in September if I can get funding for new kit

  16. #44

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    I might have to Bash a few heads together to get some sense outta you lot!

    And yet no-one got my "location" reference.... either it's not funny or you guys are slow

  17. #45

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    Quote Originally Posted by shadowx View Post
    I might have to Bash a few heads together to get some sense outta you lot!
    Vi does it always have to end in violence?

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