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made changes about the history of SCSI (was the Mac + first, or a Sun?)

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markk 2001-05-04 19:11:07 +00:00
parent 732f20b7c2
commit ce8b10335d
1 changed files with 5 additions and 5 deletions
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LDP/guide/docbook/Tuning-Linux/disk.sgml
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@ -49,8 +49,8 @@
<para>
The history of SCSI drives starts not with large servers
running multibillion dollar companies, but as its name
implies, with small systems. SCSI had its first
real implementation on early Apple Macintosh systems.
implies, with small systems. SCSI had one of its first
implementation on the Apple Macintosh Plus systems.
SCSI was made to be a general purpose interface, supporting
not only hard drives, but scanners, CD-ROMs, serial ports,
and other devices off of one common bus. Cables were
@ -58,7 +58,7 @@
fast for its time, reaching a maximum of 4MB per second.
</para>
<para>
SCSI was eventually picked up by server vendors, such as
SCSI was picked up by server vendors, such as
Sun and IBM, since it created a common way for servers
to share devices. Its advantages in design made it very
well suited to have multiple devices on the same bus
@ -105,8 +105,8 @@
and devices like scanners. In addition, when an IDE drive
is asked to do something, that IDE bus is locked while
the drive processes the request. IDE devices are usually limited
to two devices per bus, and two busses per system. Each bus
requires one IRQ line.
to two devices per bus, but can have multiple busses per system.
Most motherboards come with two IDE busses standard.
</para>
<para>
Burst performance of IDE drives gets close to that of SCSI,