Nevada Build	Version Introduced	Features Added
36	1	ZFS introduced*
38	2	Ditto blocks for meta-data
42	3	Hot spares Double-parity raidz
62	4	ZFS command history
	5	Added gzip compression
	6	ZFS boot
68	7	Added slogs
69	8	Delegation
77	9	CIFS support Filesystem-specific quotas
78	10	L2-arc
94	11	Improved scrub/resilver performance
96	12	Snapshot user properties
98	13	New "snapused" readonly property
103	14	Added passthrough-x to aclinherit property
114	15	User and group quotas
116	16	STMF property for COMSTAR

* Note: while ZFS was nominally introduced in build 27, the on-disk format was still undergoing changes until build 36, despite the fact that they were all labelled "version 1".