Supero SUPER S2DG2, User'S And Bios Manual

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Chapter 1: Introduction
1-19
1-8 AIC-7890 Ultra2 SCSI Controller
(S2DGU)
Note: If you are using a low voltage differential hard drive, it is recommended that you use an
LVD/SE Ultra2 SCSI cable. LVD/SE cables offer increased length and can accommodate up to
15 devices.
The SUPER S2DGU has an onboard Adaptec SCSI controller that is 100%
compatible with all major operating and hardware platforms. The Adaptec AIC-
7890 controller provides advanced PCI-to-SCSI Ultra2 SCSI host adapter features
in a 272-pin Ball Grid Array (BGA) package, as well as containing an integrated
dual mode (LVD/SE) transceiver. The AIC-7890 Ultra2 SCSI chip connects to a
32-bit PCI bus. It is PCI 2.1 compliant and fully supports the power management
requirements specified in the Microsoft PC98 guidelines. The AIC-7890 functions
with Adaptec RAIDport III (ARO-1130C) to deliver RAID functionality.
The AIC-7890 Ultra2 SCSI controller, used together with the AIC-3860 trans-
ceiver, allows Ultra2 and single-ended devices to operate together on the same
SCSI bus without inpacting Ultra2 performance and cable lengths. Connectors
on the S2DGU include one 68-pin 16-bit Ultra2 SCSI connector (JA1), one 68-pin
16-bit Ultra Wide SCSI connector (JA2) and one 50-pin 8-bit SCSI connector
(JA4). The controller allows you to connect a total of 15 SCSI devices, with a
maximum of 7 devices on the 50-pin SCSI connector.
1-9 AIC-7895 Dual Channel Ultra Wide SCSI Controller
(S2DGR)
The SUPER S2DGR has an onboard Adaptec SCSI controller that is 100%
compatible with all major operating and hardware platforms. PCI 2.1 compliance
is assured. Two independent Ultra Wide SCSI channels provide a data transfer
rate of 40 Mbytes/sec per channel. Connectors on the S2DGR include two 68-
pin 16-bit Ultra Wide SCSI connectors (JA1/JA2) and one 50-pin 8-bit SCSI
connector (JA3). The controller allows you to connect a total of 30 SCSI devices
(15 for each channel), with a maximum of 7 devices on the 50-pin SCSI connec-
tor.
The AIC-7895 consolidates the functions of two SCSI chips, eliminating the need
of a PCI bridge. Reducing PCI bus loading allows you to expand your system
capabilities with additional PCI devices.
The AIC-7895 functions with Adaptec RAIDport II (ARO-1130SA/1130CA) to de-
liver RAID functionality. For information on installing onboard SCSI under Win-
dows NT, refer to page 3-6 in the FAQ section of this manual.