BSD no longer uses CVS; FreeBSD specifically has moved to SVN for their primary revision control system, and CVS and related tools (such as csup) are deprecated and in some cases disabled. Along with that, linux kernel is now in git, not bitkeeper.
While source is still the "base" method of installing and updating a FreeBSD system, and it will certainly always be available; now, binary base system and add-on utilities are becoming more popular. Specifically, `freebsd-update` can be used to update the base system's binaries and source. `pkg-ng` adds `apt-get` like binary package management.
ZFS is definitely one of the major things that has FreeBSD on all of my systems. I even run ZFS on single drive laptops:
pool: zroot
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
zroot ONLINE 0 0 0
ada0p3 ONLINE 0 0 0
errors: No known data errors > BSD no longer uses CVS
Additional pedantry: This may be true of FreeBSD, but I believe both OpenBSD and NetBSD still use CVS. I think DragonFlyBSD uses git.Snapshotting.
Cloning.
Transparent deduplication.
Transparent compression.
Silent corruption detection.
Self-healing (when using copies=2 or higher, obviously the only way to provide redundancy on a single-drive setup).
NFSv4 ACLs.
You get the online compression (meaning you use less space and read and write faster on mechanical storage because you have less to read / write at a time), you get the snapshots, you get subvolumes, checksums, etc.
Does btrfs provide cifs export like ZFS ?
Edit:
from the btrfs wiki https://btrfs.wiki.kernel.org/index.php/FAQ#Is_btrfs_stable.... :
Is btrfs stable? Short answer: No, it's still considered experimental.
My trepidation with LXC would be from a documentation POV... Jails are very much known quantities, while LXC is newer, not known for great docs, and thus is probably easier to screw up.
See this HN thread for more discussion:
For a better answer, the websites of the 4 BSD projects give details on their focuses and strengths.
What are the advantages/differences of using bsd over any other linux distro?
Edit: For anyone interested, I actually Googled the question and found a pretty interesting article: http://www.over-yonder.net/~fullermd/rants/bsd4linux/01