

Success with OpenSolaris + ZFS + MySQL in production - onethumb
http://blogs.smugmug.com/don/2008/10/10/success-with-opensolaris-zfs-mysql-in-production/

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SwellJoe
This article sums up a lot of good points about Solaris.  Userland is a joke,
package management is awful, just installing and using the OS is an exercise
in frustration for folks spoiled by the lovely tools available in a Linux
system, but some of the core technology is amazing.  He's not even mentioning
the _other_ mind-bendingly great technology that Solaris offers: Zones.  Zones
are the most efficient and stable way to run many virtualized servers.  Because
they share a kernel and most system services, Zones can be extraordinarily
lightweight, while still providing exactly the level of isolation you want. 
While Xen on Linux is nice, the smallness of Zones is a killer feature.  Linux
has vservers (and the somewhat broken fork OpenVZ/Virtuozzo), which use the
same model, but the stability and capability of it leaves a lot to be desired. 
And, of course, Sun stands by Zones...problems actually get fixed, whereas
serious memory management bugs have existed in OpenVZ/Virtuozzo for years
(possibly also in vservers since they're derived from the same original
source, though I haven't seen it, so far). 

Anyway, a lot of Linux folks have written off Sun based on an old
understanding of what Sun has to offer.  If they continue to work on fixing the
userland and the package manager (ideally replace pkg with RPM/yum or deb/apt,
since both are remarkably better), and solve the driver issue (Linux has
dramatically more drivers than Solaris...which makes a difference...a lot of
folks like to have their target platform on their desktop, I know I do, and
that's just not reasonable with Solaris), OpenSolaris could become a serious
contender. 

Oh, and dtrace.  Holy crap, how awesome is dtrace?  Can't forget dtrace.  Sun has
some serious engineers. 

~~~
timtrueman
Yeah I second that; Sun has amazing engineering.  I got to dig around in the
kernel code for Solaris during my operating systems class and holy crap their
scheduler is well designed. 

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jbyers
I love Don's technical posts on smugmug.  All the gory details, no pulled
punches, no equivocating about what hardware/software/services are or aren't
working for them. 

And ZFS on Linux would be huge.  I just hope Sun is on the path.