Board Types

• The CPU/Memory+ board supports up to two UltraSPARC II CPU modules and 16 SIMM slots.

• The SBus+ I/O board includes two SYSIO ASICs that provide two SBuses: one for two plug-in SBus cards and two GBIC (100 MB/sec Fibre Channel) interfaces, and one for one plug-in SBus card and the onboard devices (10/100 Mbit TPE and Single-ended Fast/Wide SCSI).

• The Graphics+ I/O board includes one SYSIO ASIC that provides a single SBus for two plug-in SBus cards, two GBIC (100 MB/sec Fibre Channel) interfaces, and the onboard devices (10/100 Mbit TPE and Single-ended Fast/Wide SCSI).

• The PCI+ I/O board has two PCI bus connectors, each of which can accommodate a PCI riser card. Each riser card accommodates one PCI short card. In addition, onboard devices provide Fast Ethernet (10/100 Mbit) and Fast Wide SCSI interfacing.

The Enterprise 3500 server features a high-speed centerplane bus that includes separate address and data buses.

There are few differences between board slots and each slot can accept any board type. However, an I/O+ board should be installed in slot 1 since this slot connects directly to the internal media tray through the centerplane and related cables. The internal tape and/or CD-ROM drives cannot be used unless an I/O+ board is present in slot 1.

Figure B-3 Enterprise System Logical Organization