Comparing SQL Server configurations with Aireforge Studio

For ease of maintenance and performance reasons, we always aim to standardised our SQL Server estates (some of which contain over 100 instances). Everything is synchronised for their specific workload pools, so all search servers and all reporting servers are identical etc. Not only do we standardise the hardware or the VMs, but we ensure that every setting bar the IP and name are identical. This is easy is to achieve if you’ve recently built your estate from clones, but after a while the server configuration can drift, which could impact the performance and stability.

When you have an issue on standardised kit, your first question is usually what’s changed or how is that server different to the others. With over 100 instances to check, this can take a while to diagnose, but you usually find that a setting has changed or a job has been disabled. If you don’t find anything, then you still have an answer and can focus your time elsewhere. You can get a long way with scripts, either dumping to a central table or using a multi-script tool like CMS or Aireforge Script, or even policy-based management, but we found that these approaches still didn’t cut it.

Aireforge Studio instantly compares a large number of settings and uses some logic to ignore false positives, such as differences with server names within jobs. The list of what it compares increases with every release but here’s an overview.

What does Aireforge Studio compare?

  • Naming (server, instance etc.)
  • Version information (version, edition, service packs, cumulative updates etc.)
  • Instance configuration settings (memory, fill factor, max worker threads, recovery interval, CLR settings, compression settings etc.)
  • Instance properties (clustering info, edition, service pack & patch level information etc.)
  • Database settings (auto shrink, snapshot isolation, page verify option, CDC, CT, compatibility level, recovery model etc.)
  • Database file settings (auto growth, initial size, naming, state)
  • Users
  • Registered servers
  • Assemblies (creation / modification date, CRL name etc.)
  • Service information (account, start up type (manual or automatic))
  • Registry information (Port, working directory etc.)
  • Server (DDL) triggers
  • Endpoint information
  • SQL Server Agent Jobs

Examples of what you can use it for.

  • Full comparisons or partial comparisons; just checking jobs, versions, users etc.
  • Synchronising the estate. Keep all of your servers synchronised, taking some of the guess work out of service issues and misbehaving servers.
  • Auditing the estate. You can easily compare every server (limited to 500 but contact the team if you need more).
  • Testing / Performance Tuning. Create a backup of the configuration before making changes during testing. Store the output with your test results so you can look back and recreate the exact configuration during the tests.
  • Compare single output files to check for differences over time.
  • Share configurations with colleagues or use saved configurations as a reference.
  • Create example files to distribute with your software to aid installations.
  • Use Aireforge Studio to remotely check customer configurations, reducing support costs and turnaround times.

If you would like to download Aireforge Studio, you can do so by using the following the link.

Download Aireforge Studio

8 thoughts on “Comparing SQL Server configurations with Aireforge Studio

  1. Since Phil put up this blog post, downloads of OmniCompare have taken off. Thanks to you all; it’s great that what we’ve spent time on it proving of interest to people!

    Version 08.1b is now out, with a couple of little bug fixes from 0.8b, and we’ll be keeping an eye on things to fix any more bugs as soon as we spot them. If you try OmniCompare and have any ideas, suggestions, comments or even complaints, please get in touch with us at

    Cheerio and thanks for the support,


  2. This sounds like a great tool for comparing between dev, qa, and production environments. Will it compare logins, membership, privileges, etc. ?


  3. Great looking tool and I like that you’ll be doing the logins and users with their rights – that might be very useful.

    Liked by 1 person

  4. Hey, this tool looks promising, but when I try to run it on my laptop for a test run it crashes at start-up. I just see the ‘create new profile’ window, and then “omnicompare has stopped working’.

    I have installed version 0.8.1.


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