General discussion

  • Creator
    Topic
  • #2129358

    W2K AS install – disk setup?

    Locked

    by matt_falenski ·

    I am setting up an Exchange 2000 server, and I’m not sure what the best way is to allocate the disks. It’s a Compaq ML370, 1G RAM, dual processor, 431 RAID card, and 5 18.2G Ultra3 10K HDDs. We want to maximize the amount of space.
    How should I set the drives? I have been told to mirror 2 drives for the OS & swap file and set the other 3 in a RAID5. To me, using 2 drives in a mirror seems excessive for just the OS. Does anyone have any good suggestions? I can purchase an additional 18.2G drive if necessary.

All Comments

  • Author
    Replies
    • #3443062

      W2K AS install – disk setup?

      by maxwell edison ·

      In reply to W2K AS install – disk setup?

      There are many factors to take into consideration, some of which you’ve mentioned, some not.

      I’ve referenced a Windows 2000 Magazine article titled, “Exchange 2000 Performance Planning”. It’s very informative and quite thorough, and it’s nicly illustrated as well.

      Some of the sections include:

      Partitioning the IS

      Storage Performance Basics

      Storage Configuration

      Expanding Boundaries

      And it shows a nice Example Configuration

      The article may be found at this link:

      http://www.win2000mag.com/Articles/Index.cfm?ArticleID=8287

      (REMOVE SPACES from the pasted URL.)

      Good luck,

      Maxwell

    • #3443035

      W2K AS install – disk setup?

      by curlergirl ·

      In reply to W2K AS install – disk setup?

      I have also heard the advice that you should mirror 2 drives for the OS and then use the rest for the RAID 5 array. The reasoning for this is that you don’t want the operating system to be part of the array in case it (the array) fails. Well, if this is really true, that’s not very fault tolerant and then what good is the array after all? I’ve never followed this advice. In addition to what I’ve already said, like you I can’t see the point of having two mirrored 18.5 GB drives (or even 9 GB-ers) for just the OS – seems like a complete waste. I have always configured my arrays with all the available drives – 1. The “-1” drive is left over as a spare so that if one drive fails in the array, you can rebuild the array using the spare immediately and then just replace the failed drive with a new one as a spare. I have had a single drive fail in an array where the OS was on the array and had no trouble rebuilding it. I even had one case where the failed drive was not detected for several weeks (YES – WEEKS!!) on a small server and I was still able to rebuild it. So, that’s my advice – use 4 drives for the main array and leave one as a hot spare. Put your OS and everything on the main array. Once you have the hardware RAID configuring done, you can create whatever size partitions you like in the OS. Hope this helps!

    • #3444278

      W2K AS install – disk setup?

      by shanghai sam ·

      In reply to W2K AS install – disk setup?

      Building a secure and available system is like forming a sports team that is aiming for the top. It is important to have top players in the first lineup, but it is equaly important to have a “long bench” ie top players who can always jump in and fill any position in the game, during the game.

      Exchange 2000 is mission critical system, the one that your company depends on, the one that your job and your reputation depend on and the one where you prove your competence.

      So, hard disks are relatively cheap today. It is not worth taking risks which could easily be avoided with one or more redundant disks.

      I would go for:
      – Mirror (2 drives) for OS,
      – RAID 5 (3 drives) for data disk
      – 1 drive as hot spare (if you can purchase additional drive)

      If I could, I’d go for even more options:
      – Rack mounted server
      – Additional 431 RAID controller
      – External storage rack
      – dedicated UPS

      Exchange 2000 also enables you to define more storage groups and databases. With this featureyou can separately manage message storage locations for various departments (management, financial, sales etc).

      And remember, maintaining an available Exchange system is like a sports season. It is long and you should be well prepared for every situation and you should practice for disaster recovery scenarios.

    • #3423551

      W2K AS install – disk setup?

      by matt_falenski ·

      In reply to W2K AS install – disk setup?

      This question was closed by the author

Viewing 3 reply threads