| Seagate's Cheetah Outruns Them All
Continuing its trend-setting postion,
Seagate has introduced the 10,000-RPM Cheetah family , the industry's highest random I/O transaction peformance disc drive available
today. High-speed Cheetah drives incorporate innovative technology such as MR heads, a
PRML channel and ultrahigh-performance embedded servo. The 10K RPM family provides
unmatched performance for demanding application platforms such as workstations, network
file servers and enterprise-wide serviers. This Cheetah is the superior solution for
nonlinear video editing and graphics-visualization requirements and transaction-intensive
business applications such as banking or reservation systems.
Seagate's Cheetah family of disc
drives, available at 4.55- and 9.1- Gbyte capacity points, rely on the latest interface
technology in order to deliver and maintain leading-edge performance to the rest of the
system. For applications that require a hot-plug solution, all disc power, I/O and
configuration connections have been incorporated into an 80-pin BlindMate single connector
attachment that supports both 8- and 16- bit parallel UltraSCSI with Single-Ended or
Differnetial options. Both UltraSCSI and Fibre Channel-Arbitrated Loop (FC-AL) versions of
Cheetah disc drives are available for users who demand the highest in throughput
performance.
With UltraSCSI, parallel storage
technology is extended to provide burst transfer rates of up to 40 Mbytes/second of
sustained throughput. The drives are available in the most popular versions of this
interface, including combinations of narrow, wide, single-connector attachment (SCA), and
differential UltraSCSI. FC-AL goes one step further by raising serial interface
performance to up to 100 Mbytes/second per loop, with up to two loops connected to each
device, delivering high reliability and data availability to subsystems. This
unprecedented performance rate can be sustained on links up to 10 kilometers in length,
with up to 126 devices in a single chain.
By rotating at 10,000 RPM, the average
latency time is reduced to 2.99 msec, nearly a 40 percent improvement over 7,200-RPM
drives. Latency measures the amount of time necessary on average to rotate a platter to
the point where the head is positioned at the beginning of the data stream that will be
read. The Cheetah drive naturally provides a low latency rate due to its high spin rate.
The 10K RPM family's high-formatted
data transfer rate of 11.3 to 16.8 Mbytes per second is unsurpassed in the industry and
provides a superior solution for high data-rate applications such as digital A/V. The 10K
RPM drives uses Seagate's exclusive Advanced SCSI Architecture II (ASA II) technology,
which streamlines the internal architecture, dramatically increasing drive performance.
Fully compatible with all industry-standard SCSI implementations and common across all
Barracuda, Hawk and Elite families, ASA II facilitates easy product and cross platform
migration when capacity or performance requreiments change. The rotational-position
seek/sort (RPS) feature of ASA II maximizes performance in random-tagged enviroments by
selecting the data block closest to the read/write head, thus eliminating unnecessary disc
rotation time.
The 10K RPM family uses a programmable
multisegmented cache that enables dramatic throughput increases in multiuser or
multitasking environments. This 512-Kbyte RAM buffer (2,048 Kbyte optional) can be divided
into as many as 16 equal segments for independent read and write data caching. |