Member Avatar for jbennet

What is better, Solaris Express or Solaris 10?

Is it like fedora/rhel

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Short answer: pick Solaris 10 for production and long-term support; pick Solaris Express when the goal is early access to features and testing. The two are complementary release tracks rather than two competing, equivalent products.

The Fedora/RHEL analogy partly fits: both pairs separate a stable, supported enterprise release from a faster-moving stream that surfaces new work earlier. As pointed out, that is the conceptual link. The practical difference is how Sun handled the preview channel and support commitments, and what your project needs in terms of stability, certified third‑party software, and vendor support.

Choose Solaris 10 when enterprise stability, ISV certifications, documented patch policies, and a predictable maintenance window matter. Choose Solaris Express when evaluating upcoming changes, validating hardware/drivers, or trying new platform capabilities before they land in the stable release. ’s point about management tooling and the surrounding ecosystem is relevant: production deployments often depend on vendor toolchains and certified hardware/drivers, so those factors should drive the choice.

If migrating or testing, follow a short checklist:

  • Test on non-production hardware or in a controlled VM before cutting over.
  • Verify vendor/ISV support for the target release and confirm any driver or firmware requirements.
  • Snapshot or back up configuration so you can roll back quickly.
  • Review the release notes/changelogs for behavior changes that affect services you run.

A quick clarification on ’s comparison: that kind of analogy highlights differences in origin and intent, but each relationship (upstream vs downstream; preview vs stable) has its own nuances. Make the selection based on support needs, risk tolerance, and whether the new features are worth the operational trade-offs.

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Member Avatar for Member #2466

Nope...they're not like Fedora. Yet they are at the same time.

Solaris is Unix. Unix is not linux. Libraries are incompatible...applications must be recompiled across the board.

Also, solaris is used in multiple processor configuration and it has management software and tools proprietary to Sun Microsystems that allow for better server management. I'm not saying it is better...just that it is different.

I learned Unix on Solaris 2.0 back in 1995 and I now am a Linux System Admin (have been for 5 years now). I wouldn't go back for anything.

Member Avatar for Dani

I think what he meant is if the relationship between Solaris Express and Solaris 10 is comparable to the relationship between Fedora and RedHat.

Member Avatar for jbennet

yeah

Member Avatar for John A

I think what he meant is if the relationship between Solaris Express and Solaris 10 is comparable to the relationship between Fedora and RedHat.

And I also think that the relationship between Solaris and Fedora is similar to the relationship between Darwin (BSD) and Linux.

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