HP StorageWorks DAT 160 SCSI Internal Tape Drive/Top Value AG907AT 用户手册
产品代码
AG907AT
DDS Technology
DDS Technology
DDS Technology
DDS Technology
Within the tape market there is a wide range of tape technologies, the question for SMB customers is
which one to choose. The answer is clear - DDS/DAT continues to be the unit volume leader in the tape
drive market for small and medium businesses with a current installed base of over 6 million and over
17 million DAT drives shipped since its introduction in 1989. This remarkable tape technology continues
to flourish because it meets the needs of the SMB market for cost-effective, reliable backup better than
any other technology available. Of the 1.5 million backup tape drives shipped in 2005, IDC estimates
that approximately 43% were DAT drives.
which one to choose. The answer is clear - DDS/DAT continues to be the unit volume leader in the tape
drive market for small and medium businesses with a current installed base of over 6 million and over
17 million DAT drives shipped since its introduction in 1989. This remarkable tape technology continues
to flourish because it meets the needs of the SMB market for cost-effective, reliable backup better than
any other technology available. Of the 1.5 million backup tape drives shipped in 2005, IDC estimates
that approximately 43% were DAT drives.
Unlike AIT, VXA, ADR, SLR, DLT and SDLT, DDS/DAT is based on an open standard format for data
interchange. The influential DAT manufacturers group presides over this open standard with verification
processes that ensure compliance. With multiple manufacturers developing and shipping DDS/DAT
products, customers benefit from increased competition, which leads to better prices, faster development
and more choice.
interchange. The influential DAT manufacturers group presides over this open standard with verification
processes that ensure compliance. With multiple manufacturers developing and shipping DDS/DAT
products, customers benefit from increased competition, which leads to better prices, faster development
and more choice.
DDS format for DAT is a helical scan format where data is written diagonally across the width of the
tape. The advantage is that, by allowing subsequent tracks to have different writing angles and to
overlap, a much greater capacity can be achieved for a given length of tape because no guard bands
are necessary. The data format also allows for fast location of tracks and data. To achieve this, the
rotating drum is tilted at a slight angle (6°) from the vertical. The drum has four heads (two write heads
and two read heads), located at 90° intervals. For each rotation of the drum, two tracks are written. The
read heads verify the data that has been written (recorded) and the drive rewrites if necessary. The open
format ensures interchangeability between different DDS format drives.
tape. The advantage is that, by allowing subsequent tracks to have different writing angles and to
overlap, a much greater capacity can be achieved for a given length of tape because no guard bands
are necessary. The data format also allows for fast location of tracks and data. To achieve this, the
rotating drum is tilted at a slight angle (6°) from the vertical. The drum has four heads (two write heads
and two read heads), located at 90° intervals. For each rotation of the drum, two tracks are written. The
read heads verify the data that has been written (recorded) and the drive rewrites if necessary. The open
format ensures interchangeability between different DDS format drives.
HP has been involved in the design and development of DAT drives since the beginning and applies
these many years of experience to its current line of DAT products. Not only does an investment in DAT
technology provide the security of a format with a history of outstanding reliability, the legacy of
backward compatibility also provides the potential for future expansion without compromising your
investment in the technology.
these many years of experience to its current line of DAT products. Not only does an investment in DAT
technology provide the security of a format with a history of outstanding reliability, the legacy of
backward compatibility also provides the potential for future expansion without compromising your
investment in the technology.
The target market for DAT continues to be direct-attach backup. In small and medium sized businesses
cost of ownership, ease of use and a proven history (i.e. low risk) are paramount. DAT technology
provides the capacity and performance needed in a tape backup solution for workstations and entry-
level servers.
cost of ownership, ease of use and a proven history (i.e. low risk) are paramount. DAT technology
provides the capacity and performance needed in a tape backup solution for workstations and entry-
level servers.
Specific Note on DAT 160
The DAT 160 drive employs the same technology as previous DAT products, and uses DAT 160 wide
media in order to achieve higher capacities. However, it maintains the 2 generation backward
compatibility promise and can still read and write data to DAT 72 and DAT 40 (DDS-4) cartridges. It
does this by recognizing the different tapes (wider DAT 160 and the narrower DAT 72/DDS-4).
The DAT 160 drive employs the same technology as previous DAT products, and uses DAT 160 wide
media in order to achieve higher capacities. However, it maintains the 2 generation backward
compatibility promise and can still read and write data to DAT 72 and DAT 40 (DDS-4) cartridges. It
does this by recognizing the different tapes (wider DAT 160 and the narrower DAT 72/DDS-4).
QuickSpecs
HP StorageWorks Tape Drives
HP StorageWorks Tape Drives
HP StorageWorks Tape Drives
HP StorageWorks Tape Drives
Product Highlights
DA - 11883 Worldwide — Version 25 — August 6, 2007
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