Tandberg Data DAT 72, User Manual

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8
USB Configuration Guide
In this chapter:
• “ USB in DAT devices ” on page 43
• “ USB terminology ” on page 43
• “ Setting up a USB network ” on page 44
• “ USB cables ” on page 45
USB in DAT devices
The DAT tape drive is a USB 2.0 logo certified device. It supports the
high-speed USB transfer rate with a theoretical maximum transfer of over
50 MB/s. (The actual backup rate will be less. This is defined by the transfer
rate of the tape drive and the compressibility of the data.)
To benefit from the high-speed performance of the USB 2.0 interface, the
USB DAT tape drive should be connected to its host system via a USB 2.0
port. Any USB hubs between the tape drive and the system port should also
be USB 2.0 compliant.
To maximize tape drive performance, minimize the use of other USB devices
when using the USB tape drive.
USB terminology
The Universal Serial Bus, USB, is a communication interface where an
intelligent host controls all the network activity. A command from the host
to a particular device is broadcast to all devices on the network. A device
waits for a command addressed to itself and then responds as requested.
The host determines how much of the overall USB network bandwidth a
given device can use at any time. Any given USB network has only one
host.
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# August 2009