dd is a Unix command line utility for copying data. ddpt adds features for efficiently copying large amounts of data to and from disks. Apart from accessing disks using traditional Unix read() and write() calls, ddpt can optionally use SCSI pass-through interfaces to send SCSI commands to perform a copy. In Linux, the pass-through can be used to send TRIM commands to SSDs. It is written for Linux with ports to FreeBSD, Solaris, and Windows.
|Tags||Unix dd copy pass-through|
|Operating Systems||Linux FreeBSD Solaris Win32|
Release Notes: Adds application side support for a second offloaded copy mechanism defined by T10 around two years ago and already on the market under the name ODX.
Release Notes: This release added SCSI XCOPY and protection information (DIF) support, bandwidth limiting, and tape support (Linux only).
Release Notes: A "continue on error" capability was added for block and regular files. There are many bugfixes and more informative output. For example, if SIGUSR1 (SIGINFO) is sent to a ddpt process doing a large copy, apart from giving a progress report it will also predict the time remaining to complete the copy.
Release Notes: This is the initial release.