BPuhl’s Blog

A little bit of everything without actually being much of anything

AD and DC Builds, tweaks, configurations… (1)

Posted by BPuhl on July 6, 2006

I received a mail from a blog reader (Jim) who asked:

“Can you provide any insight regarding and tweaks or configuration settings you guys use on your DC builds?”

Sure, I’m happy to do this, so here I am typing happily along, and realized that there is a lot more configuration/tweaking/settings that we use than I should reasonably put into a single blog entry.  Instead this will be the first of multiple entries…

So, let’s start at  the very beginning (it’s a very good place to start)…  With our standard hardware platforms.  All MS IT domain controllers are based on either our “large” or “small” SKU…internally, we call these are DC-E (enterprise) or DC-F (field) platforms.

The DC-E specs are:

  • DL585

  • 2 x 1.8GHz AMD Opteron (64-bit) dual core processors

  • 16GB RAM

  • 172GB total storage

    • Internal Array Controller – 2 x 72GB – RAID 1

      • 50GB OS partition

      • 18.8GB partition for Log files (L: Drive)

    • Array Controller 1 – External Storage – 6 x 36GB – RAID 0+1

      • 103.2GB partition for DIT, SYSVOL, Backups (M: Drive)

The DC-F specs are:

  • DL385

  • 1 x 2.2GHz AMD Opteron (64-bit) dual core processor

  • 8GB RAM

  • 137GB total storage

    • Internal Array Controller

    • Disk 0 – RAID 1 – 2 x 72GB

      • 50GB OS partition
      • 18.8GB partition for Log files (L: Drive)

    • Disk 1 – RAID 0 + 1 – 4 x 36GB

      • 68.8GB partition for DIT, SYSVOL, Backups (M: Drive)

All of our DC’s run x64 OS’s…well…unless we have some dogfood requirement for 32-bit OS runtime (which we periodically do)…but for all intents and purposes, let’s just pretend because we really WANT to run all 64-bit OS’s.

Somewhere previously I mentioned that our average DIT size is 10-11GB on disk.  The DC-E with 16GB of RAM let’s us cache the entire database with room for growth, the DC-F with only 8GB of RAM is usually deployed where we need services, but don’t have the load so caching is less of an issue.  In that case, the DC-F is significantly cheaper for us.

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