While I haven't had a chance to use illumos in any of my projects, the Service Management Facility (SMF)[0] and Fault Manager Daemon (FMD)[1] are two big reasons why I'm looking at switching from FreeBSD to an illumos variant for my home server.
It's been a little while since I've used Debian, but I don't believe any systems comparable to SMF or FMD have been implemented[2].
It's been a little while since I've used Debian, but I don't believe any systems comparable to SMF or FMD have been implemented[2].
[0] https://www.illumos.org/man/5/smf
[1] https://www.illumos.org/man/1M/fmd
[2] I'm not sure how well systemd compares to SMF, and I'm mostly interested in FMD/SMF due to how well it can handle ZFS fault management.