Compaq AA-RHGWC-TE manual If adding a Memory Channel interconnect Install

Table 5–4: Adding a Memory Channel Interconnect or Rolling from a Dual, Redundant MC1 Interconnect to MC2 Interconnects (cont.)

Step Action	Refer to:
______________________ Note	______________________

If you set the J3 jumpers for 128 MB because the other interconnect is MC1, and then later on decide to upgrade to dual, redundant MC2 hardware using 512 MB address space, you will have to reset the jumpers. If you set the jumpers to 512 MB now, the software will only allow the use of 128 MB address space for a mixed rail cluster (MC1 on one rail, MC2 on the other rail).

J4 — Page size: Jumper pins 1 to 3 to select 8 KB

J5 — AlphaServer 8x00 Mode: Jumper pins 1 to 2 for AlphaServer 8200, 8400, GS60, GS60E, and GS140 systems and jumper pins 2 to 3 for all other AlphaServer systems

J10 — Fiber Optics Mode Enable: Jumper pins 2 to 3 to enable the use of the fiber optics modules. Jumper pins 1 to 2 to disable the use of fiber optics

5	If adding a Memory Channel interconnect: Install	Chapter 5 and
	the Memory Channel adapter module.	Memory Channel
		User’s Guide
	If this is the second system in a virtual hub
	configuration, connect an MC1 or MC2 link cable
	between the MC1 or MC2 modules.
	For a standard hub configuration, use a link cable
	to connect the adapter to the Memory Channel hub
	linecard in the hub slot that corresponds to the existing
	Memory Channel linecard in the other hub.
	If rolling from a dual, redundant MC1 interconnect
	to MC2 interconnects: Remove the MC1 adapter
	and install the MC2 adapter:
	Virtual Hub:
	If this is the first system in a virtual hub configuration,	Figure 5–2 (B)
	replace the MC1 adapter with an MC2 adapter.
	If this is the second system in a virtual hub configuration,	Figure 5–2 (C)
	replace both MC1 adapters with MC2 adapters. Use a
	BN39B-10 link cable to connect Memory Channel adapters
	between systems to form the first MC2 interconnect.
	If this is the second adapter on the first system in a	Figure 5–2 (D)
	virtual hub configuration, replace the MC1 adapter

with an MC2 adapter. Connect the second set of of MC2 adapters with a BN39B-10 link cable to form the second Memory Channel interconnect.

5–16Setting Up the Memory Channel Cluster Interconnect