| DDM
brinda las soluciones de alta tecnología SAIT -(Super
Advance Intelligen Tape) |
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Industry’s
Highest Capacity Tape Drive
SAIT, a tape-based data storage technology platform that is
its first generation, delivers the industry's highest capacity
tape drive - storing up to 500 GB of uncompressed data on
a single-reel, half-inch tape cartridge and featuring a sustained
native transfer rate of up to 30MB per second uncompressed.
First generation SAIT drives incorporated into automation
solutions provide uncompressed capacities ranging from 10
TB in a space-efficient configuration to more than 500 TB
in a 1,000-cartridge freestanding library.
Leverages
AIT’s Proven Technologies
SAIT technology utilizes Advanced Metal Evaporated (AME)
media, which combines high capacity with high durability.
AME creates a recording layer of nearly 100% magnetic material,
in contrast to conventional tape technologies that may have
less than 50% magnetic material. Higher areal density and
capacity is the result, as well as a smoother tape surface
that significantly prolongs head and media life. SAIT leverages
Sony's R&D investments, as well as the field-proven
AIT recording technology, but scales this into a half-inch
cartridge and full-height 5.25-inch mechanism.
High
Capacity, Performance, and Reliability
Based on advanced helical-scan recording technology, which
is known for its high data density, outstanding data transfer
performance, as well as outstanding reliability and durability
advantages, the SAIT technology platform has a forward-looking
roadmap of four defined generations that have the potential
to scale to up to four terabytes of uncompressed capacity
in a single cartridge
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Technology
AME Media
AME media used by SAIT can read and write data reliably at very
high densities through the use of pure cobalt magnetic material.
Magnetic Particle (MP) media, used by conventional half-inch tape
formats, is limited by particle size in the magnetic layer to
achieve higher cartridge capacities. AME media used by SAIT imposes
no such limitation and can enable SAIT to achieve up to twice
the capacity of other half-inch tape formats. Also, AME tape's
use of a "Diamond-Like Carbon" (DLC) protective layer
provides superb durability and long archival life. Twenty times
tougher than a standard oxidation layer, DLC dramatically improves
abrasion resistance and overall media and mechanism durability.
Memory-in-Cassette
Another contributor to SAIT performance is the Memory-in-Cassette
(MIC), a 64 Kbit solid-state memory chip that stores the cartridge's
system log and file search information. This information can be
used immediately by the drive, enhancing data access, improving
media management and reducing overall latency. SAIT incorporates
Remote-MIC (R-MIC), which allows the tape drive to access valuable
cartridge statistics without loading, rewinding or physically
handling the tape, so tape wear and tear is reduced.
Helical
Scan Recording
Unlike the linear serpentine recording technology used by DTL,
SDLT, and LTO drives, the Sony SAIT drive employs a helical scan
recording style in which data tracks are written at an angle relative
to the edge of the tape. This provides higher density recording,
enabling Sony customers to lower media costs and increase efficiency
by storing more data on an equal area of tape. In addition, Helical
Scan writes the tape in one pass at a low speed, resulting in
less wear-and-tear on the drive and media.
Sealed
Deck Design
The SAIT drive has a tightly enclosed structure in which the heat-generating
substrate is kept separate from the mechanical workings. In addition
to superior durability, it is virtually dust-proof.
Chucking
System
SAIT's leader block enables reliable loading of the tape, and
eliminates the possibility of faulty chucking.
Optical
Sensor
Non-contact optical sensors have been adopted to monitor the operation
of tape and drive. This further enhances accuracy and durability.
Error
Correction System
SAIT has an exceptionally reliable error correction system. Capacity
loss per track is smaller than with existing rewrite functions,
since rewriting is possible at different heights per block, producing
extraordinarily accurate re-recording levels. Furthermore, burst
errors of up to 16% of the overall track can be corrected and
reproduced normally using our triple-step error correction code.
Reduced
Tape Tension and Load
The tension sensor, located on both sides of the drum, permanently
controls the tape drive tension. By reason of ensuring constant
low tension, high durability has been realized. A thin groove
to the drum enables a constant micron-depth film of air to be
created, and a structure whereby the tape is evenly attached to
the drum in spite of the low tension. And, the metal guide with
built-in ball bearings reduces tape load.
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SAIT-1
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Capacidad
nativa/comprimida
(compress 2.6:1)
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500GB
/ 1.3TB
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Tasa
de transferencia sostenida de datos nativos
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30
MB/seg
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Tasa de transferencia sostenida de datos comprim.
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78
MB/seg
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Buffer
size
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10MB
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Memory
in cassette
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64
Kbit mechanical contact
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Interface
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Ultra160
Wide SCSI
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Fibre
Channel
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Form
Factor
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internal
or external drive
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Especificaciones
técnicas
(data sheet inglés)
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Comparación
competitiva
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