1.5.2External I/O Expansion Unit

The External I/O Expansion Unit is an optional product used to add PCI slots. The External I/O Expansion Unit has a height of four RUs (rack units), about 18 cm, in a 19-inch rack.

The External I/O Expansion Unit can accommodate up to two I/O Boats by using either six PCIe slots or six PCI-X slots.

■PCIe slots in each I/O Boat: short size to long size (to 312 mm)

■PCI-X slots in each I/O Boat: short size to long size (to 312 mm)

Also, active addition and replacement is enabled for all slots in the External I/O Expansion Unit.

For details, see the I/OExpansion Box Installation and Service Manual .

FIGURE 1-11shows the External I/O Expansion Unit.

FIGURE 1-11External I/O Expansion Unit

1.5.3SPARC Enterprise M9000 Server (Expansion Cabinet) Option

A SPARC Enterprise M9000 Server (base cabinet) configuration can contain up to 32 CPU Modules (64 cores), up to 2TB of memory, and up to 224 PCI slots. A configuration containing more components than described above would require the expansion cabinet option of the SPARC Enterprise M9000 Server.

A configuration with the SPARC Enterprise M9000 Server (expansion cabinet) can contain up to 64 CPU modules (128 cores), up to 4TB of memory, and up to 288 PCI slots.

1-26SPARC Enterprise M8000/M9000 Servers Overview Guide • April 2007