mirror of https://github.com/tLDP/LDP
made changes about the history of SCSI (was the Mac + first, or a Sun?)
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<para>
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<para>
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The history of SCSI drives starts not with large servers
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The history of SCSI drives starts not with large servers
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running multibillion dollar companies, but as its name
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running multibillion dollar companies, but as its name
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implies, with small systems. SCSI had its first
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implies, with small systems. SCSI had one of its first
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real implementation on early Apple Macintosh systems.
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implementation on the Apple Macintosh Plus systems.
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SCSI was made to be a general purpose interface, supporting
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SCSI was made to be a general purpose interface, supporting
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not only hard drives, but scanners, CD-ROMs, serial ports,
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not only hard drives, but scanners, CD-ROMs, serial ports,
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and other devices off of one common bus. Cables were
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and other devices off of one common bus. Cables were
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@ -58,7 +58,7 @@
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fast for its time, reaching a maximum of 4MB per second.
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fast for its time, reaching a maximum of 4MB per second.
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</para>
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</para>
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<para>
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<para>
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SCSI was eventually picked up by server vendors, such as
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SCSI was picked up by server vendors, such as
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Sun and IBM, since it created a common way for servers
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Sun and IBM, since it created a common way for servers
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to share devices. Its advantages in design made it very
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to share devices. Its advantages in design made it very
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well suited to have multiple devices on the same bus
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well suited to have multiple devices on the same bus
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@ -105,8 +105,8 @@
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and devices like scanners. In addition, when an IDE drive
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and devices like scanners. In addition, when an IDE drive
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is asked to do something, that IDE bus is locked while
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is asked to do something, that IDE bus is locked while
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the drive processes the request. IDE devices are usually limited
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the drive processes the request. IDE devices are usually limited
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to two devices per bus, and two busses per system. Each bus
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to two devices per bus, but can have multiple busses per system.
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requires one IRQ line.
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Most motherboards come with two IDE busses standard.
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</para>
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</para>
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<para>
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<para>
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Burst performance of IDE drives gets close to that of SCSI,
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Burst performance of IDE drives gets close to that of SCSI,
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