Storing files and handing them to other machines: the pool underneath, the two protocols that export it, and how to get a copy back.

• ZFS — pools first (choosing a redundancy group, checking one, measuring it, replacing a disk), then the file systems on top: volumes, compression, deduplication, backup and restore, clones, snapshots and rollback.
  • Debugging — zdb for reading a pool's configuration, datasets and labels, worked through on a corrupted mirror and on a snapshot that refuses to be destroyed.
• Samba — the file system as Windows clients see it: global settings and logs, domain and workgroup, performance, security restrictions, veto files, shadow copies, extended attributes and ACLs, authentication against LDAP, and the home, data and printer shares.
  • Commands — the net invocations: granting printer rights, adding and removing printers, listing users and their ids, browseable shares and resources in use, privileges, SIDs, and file ACLs.
• NFS — exporting over NFSv4: mapping users by name rather than by number, the server exports and delegation, and the matching client side.
• Dump and restore — snapshot, dump to a file, restore as a new file system, with the UFS and the ZFS sequence set side by side.