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This chapter describes device and media operations you can perform through the
Backup server. This chapter consists of the following sections:
*"Device Configuration" on page 57
*"Storage Nodes, Remote Devices, and Multiple Network Interfaces" on page 60
*"Media Management" on page 61
*"Storage Management Operations (Labeling and Mounting)" on page 71
*"Storage Volume Status" on page 77
*"Save Set Staging" on page 79
*"Cloning" on page 80
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A device is a drive that reads and writes data to storage volumes during backup,
recover, and other operations. The Devices resource contains the attributes for each
device. The instructions for configuring your devices differ depending on whether
the device is standalone or is contained in an autochanger or silo.
For the Backup server to recognize your storage devices, you must configure each
storage device individually.
If you use tape drives as your storage devices, you must use no-rewind devices
because Backup writes a file mark on the volume at the end of each backup and then
appends data onto the volume based on the position of the file mark. If the device
rewinds the media, the file mark position is lost and previously written data is
overwritten by the next backup. The pathnames for these devices must follow the
Berkeley Storage Device (BSD) semantic rules, for example,/dev/rmt/Ombn. The b
in the pathname satisfies the requirement.
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