> Excuse me what ? If this is really true, why isn't it more widely adopted than Ubuntu for server side deployment ? As great and fun as single image clusterin

> Excuse me what ? If this is really true, why isn't it more widely adopted than Ubuntu for server side deployment ? As great and fun as single image clustering is, it's a pretty niche use-case. Event joyent/smart-os, which went the "other, sensible way", focusing on co-location of storage and processing - turned out to be pretty niche. Linux had openMosix - didn't see much use outside actual clusters. If you're not doing the smartos thing, but want full-on ssi - you really (today) need pretty extreme interconnect (ie: infini band or better; high bandwidth, low latency) - every node in you supercomputer needs reasonable access to storage. The dragonfly people have been working hard on this for years, they've come a long way. But you don't really need it if your workload runs on less than a rack full of servers. As far as I understand it, anyway.