+(read\-write) Authentication method to use to connect to the NDMP server\&. One of
+"md5" (default), "text", "none" (for an empty authentication attempt) or "void" (for
+no authentication attempt at all)\&.
+.RE
+.PP
+NDMP_PASSWORD
+.RS 4
+
+(read\-write) Password for md5 or text authentications\&.
+.RE
+.PP
+NDMP_USERNAME
+.RS 4
+
+(read\-write) Username for md5 or text authentications\&.
+.RE
+.PP
+READ_BLOCK_SIZE
+.RS 4
+
+(read\-write) This property specifies the block size that will be used for reads; this should be large enough to contain any block that may be read from the device and must be larger than BLOCK_SIZE\&. See BLOCK_SIZES, above\&.
+.RE
+.SS "VFS Device"
+.nf
+tapedev "file:/path/to/vtape"
+.fi
+.PP
+The VFS device driver stores data on a UNIX filesystem\&. Note that although one typically uses the VFS device driver to store data on hard disks, the driver does not interface with any hardware on a block level\&.
+.PP
+The device name specifies a path to a directory which must exist and contain a "data/" subdirectory\&. Each tape file is stored as a distinct file in this directory, the name of which reflects the Amanda header in the tape file\&. Block boundaries are not maintained: the driver supports reads of arbitrary size, regardless of the blocksize used to write the data\&.
+.PP
+This device supports LEOM detection\&. LEOM will be indicated when the MAX_VOLUME_USAGE is nearly met, or when the filesystem is nearly out of space\&. The latter circumstance is detected by monitoring the available space on the filesystem, and this monitoring can be disabled with the MONITOR_FREE_SPACE property\&. Note that the device cannot detect other circumstances that may cause a write to fail, such as a filesystem quota\&. LEOM detection can be disabled by setting the LEOM property to false\&.
+.SS "Device-Specific Properties"
+.PP
+MONITOR_FREE_SPACE
+.RS 4
+
+ (read\-write) This property controls whether the device will monitor
+ the filesystem\'s free space to detect a full filesystem before an
+ error occurs, and defaults to true\&. The monitoring operation works on
+ most filesystems, but if it causes problems, use this property to
+ disable it\&.
+.RE
+.SS "DVD\-RW Device"
+.nf
+tapedev "dvdrw:/var/cache/amanda/dvd\-cache:/dev/scd0"
+device\-property "DVDRW_MOUNT_POINT" "/media/dvd"
+device\-property "DVDRW_KEEP_CACHE" "false"
+device\-property "DVDRW_UNLABELLED_WHEN_UNMOUNTABLE" "true"
+.fi
+.PP
+The DVD\-RW device driver reads and writes optical media such as DVDs and CDs\&. The device name must specify a cache directory for data to be temporarily stored, followed by the operating system name for the optical drive\&. The cache directory must contain a "data/" subdirectory\&.
+.PP
+The DVDRW_MOUNT_POINT property is required, and specifies a directory where the optical media can be mounted\&. This directory must be configured to enable non\-root users to mount the optical media\&. On Linux, that means a line similar to the following in /etc/fstab:
+.nf
+/dev/scd0 /media/dvd auto ro,user,noauto 0 0
+.fi
+.PP
+Note the "user" option\&.
+.PP
+When writing data, the device acts as a VFS device using the given cache directory\&. On completion of writing the tape, the cache directory is written to optical media\&. The DVDRW_KEEP_CACHE property controls whether the cache contents are immediately deleted\&. When reading, the optical media is first mounted and read as a VFS device\&.
+.PP
+Attempting to mount unformatted media or media that is formatted but contains no filesystem will usually result in an error\&. The boolean DVDRW_UNLABELLED_WHEN_UNMOUNTABLE property specifies whether media that cannot be mounted should be treated as an empty, unlabelled volume when attempting to read the volume label\&. It is necessary to set this property to "true" when labelling such media\&.
+.PP
+This device does not support LEOM detection\&.
+.SS "Device-Specific Properties"
+.PP
+The properties DVDRW_GROWISOFS_COMMAND, DVDRW_MOUNT_COMMAND and DVDRW_UMOUNT_COMMAND specify alternative commands for writing, mounting and unmounting optical media\&. The default is to find the programs using the PATH environment variable\&.
+.PP
+The CDRW device supports all of the properties of the VFS device, as well as the properties given below\&. The DVDRW_MOUNT_POINT property is required\&. Other properties are optional\&.
+.PP
+DVDRW_KEEP_CACHE
+.RS 4
+
+ (read\-write) Set this boolean property to "true" if the disk cache directory should be kept after successfully writing tape data to optical media\&. The default is false, which causes the cache contents to be deleted immediately after a successful write operation\&.
+.RE
+.PP
+DVDRW_MOUNT_POINT
+.RS 4
+
+ (read\-write) This property specifies the filesystem mount point for the optical media\&. Non\-root users must be able to mount optical media by invoking "mount" and specifying this mount point\&.
+.RE
+.PP
+DVDRW_UNLABELLED_WHEN_UNMOUNTABLE
+.RS 4
+
+ (read\-write) Treat unmountable media as empty, unlabelled media\&. This is necessary when attempting to label freshly formatted media\&.
+.RE
+.PP
+DVDRW_GROWISOFS_COMMAND
+.RS 4
+
+ (read\-write) The command to invoke to burn the DVD\&.
+.RE
+.PP
+DVDRW_MOUNT_COMMAND
+.RS 4
+
+ (read\-write) The command to invoke to mount the DVD\&.
+.RE
+.PP
+DVDRW_UMOUNT_COMMAND
+.RS 4
+
+ (read\-write) The command to invoke to unmount the DVD\&.
+.RE
+.SH "SEE ALSO"
+.PP
+\fBamanda\fR(8),
+\fBamanda.conf\fR(5)
+.PP
+The Amanda Wiki:
+: http://wiki.zmanda.com/