- Per-file restoration
- Backup media verification
- Media management
The zfs send command creates a stream representation of a snapshot that is written to standard output. By default, a full stream is generated. You can redirect the output to a file or to a different system. The zfs receive command creates a snapshot whose contents are specified in the stream that is provided on standard input. If a full stream is received, a new file system is created as well. You can also send ZFS snapshot data and receive ZFS snapshot data and file systems.
In this Oracle Solaris release, the zfs send command has been enhanced with -w compress option. This option enables a system to perform a raw data transfer. In this type of transfer, data blocks that are compressed are read as is on the source disk and written as is on the target. No decompression-recompression occurs during the operation.
. This system can still receive data transfers from a source that does not have the zfs send -w compress option, such as systems running previous Oracle Solaris releases. In this case, the default behavior applies, where the compressed data blocks are first decompressed before they are transferred to the target system. After the transfer is complete, the blocks are then recompressed on the receiving system. For more information, see Sending ZFS Data Using Raw Transfer.
In addition, this release includes the ability to resume transferring ZFS data. In particular, the transfer of large amounts of ZFS data can be interrupted due to network outages or system failure. To prevent having to resend the whole thing again, the zfs send and zfs receive commands can be run with the -C option to resume sending the ZFS data. For more information, see Using Resumable Replication.
This section covers the following topics:
Note the following backup solutions for saving ZFS data: