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Article #603

Re: Is it possible to actually get a 16 MB/sec data transfer rate w/ an EIDE drive?

#603
From: Alaeth's_Thorn
Date: Fri, 19 Dec 1997 00:00
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>Elite 47: A Powerful Capacity Point
>With the introduction of the Elite 47, Seagate's sixth generation of Elite
>drives continue their far-reaching standard of providing ultimate capacity,
>superior performance and proven reliability. Indeed, the 47 Gbyte Elite 47
>represents the industry's highest-capacity disc drive, providing more than
>two times the capacity of the next-largest generation disc drive available
>today. The 5.25-inch Elite 47 makes it ideal for storage-hungry mainframe
>applications, enterprise and department servers and digital A/V
>applications.
>
>Performance
>Seagate has designed the Elite 47 to top the performance charts. Its low
>latency (5.56 msec) and rapid seek time (13 msec) translate to it
phenomenal
>ability to process I/O requests. The 5,400-RPM Elite 47 provides a
sustained
>formatted data-transfer rate ranging from 15.6 to 23 Mbytes per second,
>which is equal to that of the 7,200-RPM Barracuda� 9. The Elite 47 Ultra
>SCSI provides staggering burst data-transfer rates of 20 Mbytes per second
>for an 8-bit -wide parallel interface and 40 Mbytes per second for
>16-bit-wide parallel interface.
>
>Two key factors enter into the Elite 47's performance: a 4096-Kbyte
>multisegmented adaptive cache for accelerated performance and
embedded-servo
>technology. Embedded-servo technology ensures fast, accurate seek
>performance for uninterrupted data streaming under all temperature
>conditions.
>
>The innovative Elite 47 has leveraged all of the proven technologies,
>components and designs built into the highly reliable Elite 23, which has
>demonstrated over 1,000,000 hours MTBF. These technologies include
>magnetoresistive (MR) heads, partial-response, maximum likelihood (PRML)
>channel and Seagate's Advanced SCSI Architecture II (ASAII) interface.
>
>To further increase throughput enhancements, the Elite 47 uses a
>full-function read-ahead cache that can be divided into as many as 16
>segments. The data in these blocks is available to the host with no
>additional access to the disc and the various data blocks can be cached
>simultaneously so that subsequent commands will have a higher probability
of
>a cache hit.
>
>The Elite 47 features command queuing, which allows the host to send
>multiple-tagged commands to the drive. Command queuing enables the drive to
>reorder commands and complete operations in the shortest time possible.
>
    Great, as soon as I win the lottery, I'll but one for everyone on this
N.G.

    I enjoy the speed difference my 1 Gig Connor makes over my 1.6 Gig WD
Caviar.  Even though the Caviar runs at 8.5 ms seek (DOS Norton Sysinfo),
the Connor blows it away in terms of speed/access.  If I had more money, I
would but the about drive... *sigh*
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From: "Alaeth's_Thorn" <ask@me.now>
Subject: Re: Is it possible to actually get a 16 MB/sec data transfer rate w/ an EIDE drive?
Date: 1997/12/19
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