Supero PDSLA, Руководство пользователя

Страница: 47 / 80

Chapter 2: Installation
2-27
Introduction to Serial ATA (SATA)
Serial ATA(SATA) is a physical storage interface. It uses a single cable with a
minimum of four wires to create a point-to-point connection between devices. It is
a serial link which supports SATA Transfer rates from 150MBps. The second gen-
eration SATA can support up to 300 MBps theoretically. Because the serial cables
used in SATA are thinner than the traditional cables used in Parallel ATA(PATA),
SATA systems have better airfl ow and can be installed in smaller chassis than
Parallel ATA. In addition, the cables used in PATA can only extend to 40cm long,
while Serial ATA cables can extend up to one meter. Overall, Serial ATA provides
better functionality than Parallel ATA.
Introduction to the Intel ICH7 I/O Controller Hub
Located in the South Bridge of the Intel Lakeport (945G/P) chipset, the ICH7 I/O
Controller Hub provides the I/O subsystem with access to the rest of the system.
It supports 1-channel Ultra ATA/100 Bus Master IDE controller (PATA) and four
Serial ATA (SATA) Second Generation Host Controllers, which support up to four
Serial ATA ports and four hard drives. The ICH7 I/O Controller Hub supports the
following Parallel ATA (PATA) and Serial (SATA) device confi gurations:
SATA Operate Modes
You can select from the following modes: Auto, Combined, Enhanced, and SATA
Only Mode. The number of devices supported by these modes are listed below:
*SATA Only: The maximum of 4 devices are supported (4 SATA)
*Auto Mode: The maximum of 6 devices supported (4 SATA + 2 IDE)
*Enhanced Mode: The maximum of 6 devices supported (4 SATA + 2 IDE)
*Combined Mode: The maximum of 4 devices supported (2 SATA + 2 IDE)