Dkopp is a free open source Linux program used to
copy or back-up disk files to DVD or BD (Blue-Ray disk). Full or
incremental backups can be done, with full or incremental media
verification. Include or exclude files or directories at any level
using a GUI. An incremental backup updates the same media used for
a prior full backup. Select and restore files to disk, or drag and
drop single files. Backup jobs can be saved for later
re-use. Large backup jobs can use multiple media.
With dkopp, you can copy your files to DVD/BD for
safekeeping or archival storage, and verify that the copy is good
(no read errors). All media types can be used: DVD-R/RW, DVD+R/RW,
Three kinds of backup are available: full, incremental, and
accumulate. A full
backup copies all specified files and leaves no other
files on the DVD/BD. An incremental
backup copies only those files needed to make a prior
dkopp DVD/BD match the disk files exactly: only new or changed
files are copied, and deleted files are deleted. This is normally
much faster than a full backup. Thus, after an incremental backup,
the DVD/BD will exactly match the disk. An accumulate backup is
like an incremental backup, but unmatched DVD/BD files are not
You select files to be copied using a GUI. You can navigate
file system and select files or directories to include or exclude
any level in the hierarchy. These choices can be saved in a backup
file to automate recurring backups. If files are added or deleted
within an included or excluded directory, you need normally take
further action: the next backup will include these changes
automatically. You may also use wildcard file specs for a more
specification, e.g. include /home/* and exclude /home/*/.*
personal files, exclude all hidden system files).
DVD/BD media can be verified three ways: full, incremental, and
thorough. A full verify
reads the entire DVD/BD and reports any files having read errors.
An incremental verify
reads only those files that were newly written by an immediately
preceeding incremental backup. This is usually much faster while
still offering a high level of security. A thorough verify reads
every file on the DVD/BD and makes a bytewise comparison with the
corresponding disk file. This is not normally necessary, but it
assures that the hardware and software are working correctly.
You can list all files on a dkopp DVD/BD, or search for specific
using wildcards. You can compare a DVD/BD with the corresponding
files, listing all differences: files that have been created,
or modified since the DVD/BD copy was made. This comparison can
made at two summary levels: file differences (counts and bytes)
directory, or for all files copied to the DVD/BD.
For disaster recovery or file transfer, dkopp has a file restore
capability. You can select and restore DVD/BD files to their
original directories or anywhere else. Any file manager can be
used to drag and drop individual files from the DVD/BD.
Incremental backups update the same DVD/BD made from a prior full
backup. You do not need to track matching sets of full and
incremental media, and you do not need to restore files from
multiple media in correct sequence.
Backup files are recorded in a backup log, which you can query to
find all past backups of a desired file or directory. The log
shows the backup dates and times and the media label used.
Speed for 4x Blue-Ray media: about 300 MB/minute for combined
backup and verify.