There was a time when ZFS would have been a good answer for this. Of course, now it's available on FreeBSD and Linux.
At one point also there was zones, but again, containerization is pretty standard elsewhere now.
I guess also if you go further back, like the Linux 2.6 era, which is close to when Solaris was open sourced ... the 2.6 release involved a concerted effort to improve SMP support. So maybe you'd be interested more in commercial Unix in the 2.4 era, for better SMP. But again, Linux surpassed this ~20 years ago.
I feel like they need to run a public cloud just to let people tinker with lightweight stuff and scale up to owning the thing.
That said, I’m also a moron about certain things, and this might be a moronic take.
Exactly. Oxide builds machines for the few companies that won't go with Azure or AWS, or that got so big Azure and AWS are no longer competitive (and it takes A LOT to be in that space, because pricing is ridiculously flexible). This is a niche market.
The question I always ask is "why would I deploy my software on your platform?". The answer is, most of the time, I wouldn't. I don't want to play platform bingo with company money.
Zones were lightweight, more akin to the Linux vserver project or lxc. You could make a zone on its own zfs filesystem, clone the zone (which creates a zfs clone), launch the clone, run a throw-away task, tear the zone down which also discards the zfs snapshot+clone. It was quick and cheap but also half a decade before Docker was released or popularized.
zfs integrated into other parts of the system just as well. eg: iSCSI volumes backed by a zpool and export properties configured in zfs. All of these technologies were built with the idea of being "self-healing." Meanwhile, Linux has a disparate iSCSI daemon, lvm+ext4/reiserfs, initd, and probably 20 different tools to learn if you want to grab metrics across the stack like dtrace on Solaris was capable of.
The out of band management was amazing too. Yes, some x86 hardware had ilom but like everything else in the space, it's bolted on and not truly integrated.
Sun made really nice stuff that outpaced Linux in a lot of ways. The ecosystem came from a time of competing BSDs and looked for paying customers for the engineering marvel they had created. They were used to customers figuring out how to use Unix, and the Linux crowd at the time still fit that rubric. The OS was not optimized for low-latency terminal interaction and thus "felt slow" (aka: Slowaris) but a well tuned DB on Sparc really cooked.
Finally, I went to a few Sun events and had Sun reps come and look at what we were doing. They were definitely happy to help with any kind of outreach/onboarding we needed. The issue was none of "onboarding" but was a lot of "Linux is a movement." In early times, Linux was an anti-corporate movement and some of that energy carried through to the 2010s. It's sadly ironic because Sun itself has roots in open standards and an anti-establishment mentality.
True, but did you need that? These are all high-end (therefore low-volume) server stuff. I loved that, and their high-end systems with dozens of SPARCs, but I had one customer who had one, and everyone in my company knew they made a terrible decision - they needed a web server, and you could do more with a rack of Dell boxes for a fraction of the Ultra Enterprise [very large number] price tag. They also decided they should run an enterprise application server (they went with Dynamo) instead of Tomcat, so, again, they made a stack (maybe a directed acyclic graph) of bad decisions. I think I facepalmed so much that is the point my hair started falling.
Later on, we even ran an ipfilter based router from a T1 on OpenSolaris for decent IPv6 connectivity with link-aggregation+vlans when our Cisco 6509 setup was found to be inadequate for the task.
Even back then, the CTO of our startup said Sun had missed the boat on dominating x86 Unix. They could have had a larger role in x86 Unix world if they had wanted to. It was definitely a misstep for Sun.
Having said that, throughout the 1990s Sun was amazing. They were even good right up to the Oracle purchase, although by that time RHEL on HP (or Dell) servers was eating their lunch.