zettabyte file system

ZFS is a filesystem first used in Sun Microsystems Solaris 10. ZFS makes use of 128-bit addressing, giving access to something that might be referred to as a "giga-terabyte" (a zettabyte) worth of data. Sun believes that this capacity will never be reached, meaning that this filesystem will never need to be modified to increase its storage capacity. Features:

Copy on write: (beyond journaling? File backup/revisions in the filesystem)
LVM: ZFS integrates Logical Volume Management features into the filesystem.
"adaptive endian-ness": Filesystems should be portable between little-endian and big-endian systems.
Checksums: ZFS provides data integrity features to detect (+ correct?) data corruption.
HA Storage+: "Active-Passive" cluster/failover compatibility. (only one server can write to a shared physical disk)
Clones: low-cost "copies" of similar filesystems based on a single snapshot. (Translucent file systems?)
Compression: squeeze "empty" spaces out of files, or blocks used by small files.
ACLs: Supports "Full range of NFSv4/Windows NT-style ACLs".

Zettabyte File System

See also