SCSI controller and connectors

This integrated dual channel Adaptec® AIC™-7890 SCSI controller is a high-performance, PnP compliant, single-chip PCI local bus-to-Ultra2 SCSI master host adapter. Its advanced SCSI I/O cell technology ensures data integrity for higher I/O bandwidth requirements with data rates of 40-MB/sec in Ultra mode and 80-MB/sec in Ultra2 mode.

Additional features:•Dual LVD 16-bit (68-pin) PCI-to-Wide Ultra2 SCSI connectors

•Full 32-bit PCI bus master implementation maximizing data transfer on PCI local bus at 133-MB/sec data bursts

•SCSI configured automatically (SCAM) Level 1 for Windows 95® enabling automatic configuration of new devices without having to reboot the system.

•Wide SCSI configuration supporting up to 15 connected SCSI peripherals per channel, for a total of up to 30 devices. Up to seven 8-bit devices can be installed on each channel.

•Multithreading support for up to 255 simultaneous I/O tasks

•Advanced SCSI I/O cell ensuring data integrity by automatically and continuously adjusting slew rate to compensate for SCSI bus loading

•Driver support for all major operating systems.

Front panel connectors

There are several connectors that provide connection of the front panel features to the system board. Some of these connectors are redundant, allowing the front panel features to vary according to the system requirements and the chassis configuration. Therefore some of these connectors are not used in the system as shipped.

SHM mode jumper

This jumper identifies the physical environment for the InforManager server management software and should be removed from the ALR 7300.

16 Maintaining and Troubleshooting the Gateway ALR 7300 Server