QuickSpecs

on a USB converter, HP's USB interface is fully integrated with the drive and uses the SCSI command set
within the USB payload. The benefit of this implementation is that it gives the drive full SCSI functionality
and the flexibility of USB without the additional cost of a converter.
By offering native USB 2.0 DAT drives, HP aims to provide customers with a number of benefits:
Greater usability
Plug-and-play connectivity - the system automatically detects and configures the tape drive.
The DAT drive is installed and ready to backup in less than 60 seconds.
Microsoft fully supports USB devices natively in their operating systems providing robust, secure
configuration and installation wizards.
Cables are easily identifiable, easy to attach without the need for thumb-screw and robust enough
to ensure reliable retention.
Resource abundance
Native USB ports are universally available in systems and servers
Multiple ports ensure that port resources are widely available, reducing the conflict between
devices over scarce connectors.
Port expansion is easy, USB hubs can be installed to add additional ports supporting up to 127
devices on a system
Low cost, reliable connectivity
By providing native USB DDS/DAT drives there is no need for customers to purchase additional
host-bus adapters
HP's USB 2.0 implementation benefits from the built-in reliability and failure recovery inherent in
the underlying SCSI protocol
USB 2.0 has multiple levels of physical error detection and recovery which ensure reliability on a
par with SCSI and Fibre-channel interfaces.
USB 2.0 compliance certification provides thorough, ongoing reliability and quality control. A well
implemented USB network should use only USB 2.0 compliant components, including USB 2.0
certified cables.
Sustainable performance
Assuming the use of data with a compressibility of 2 to 1, the DAT 320 USB Tape Drive can
stream data at a transfer rate of 24 MB/s. Assuming the use of data which is not compressed, the
USB DAT320 can stream data at a transfer rate of 12 MB/s.
Compression
CompressionCompression
Compression DDS uses built-in hardware compression using the 'DCLZ' data compression algorithm. Data
compression is host-selectable with the default that compression is turned on. Typical data compression
is 2:1, but actual compression depends on the type of data being compressed and can be more or less
than 2:1.
Rack-Mount Tape
Rack-Mount TapeRack-Mount Tape
Rack-Mount Tape
Options
OptionsOptions
Options
HP DAT SCSI and USB drives are supported on the HP StorageWorks 1U and 3U Rack-Mount Kits . The
3U Rack-Mount Kit allows up to four internal DAT drives to be installed in 3U of rack space, while the
1U Rack-Mount Kit holds two DAT drives in 1U of space. 1U rack-mount kits use standard internal DAT
USB and SCSI drives for a low-cost solution. 3U rack-mount kits use standard internal DAT SCSI drives.
Either of these rack enclosures can be configured with separate SCSI buses (channels) for each drive or
two or more drives per bus using the optional cable kits.
NOTE:
NOTE:NOTE:
NOTE: Please refer to the QuickSpecs for HP StorageWorks Rack-Mount Kits at:
http://h18000.www1.hp.com/products/quickspecs/10854_div/10854_div.html for further information.
QuickSpecs
HP StorageWorks DAT Tape Drives
HP StorageWorks DAT Tape DrivesHP StorageWorks DAT Tape Drives
HP StorageWorks DAT Tape Drives
Product Highlights
DA - 11883 Worldwide — Version 35 — April 29, 2011 Page 10