Compaq AA-RHGWB-TE manual Setting the Memory Channel Adapter Jumpers, 1 MC1 and MC1.5 Jumpers

____________________ Note _____________________

If you are installing SCSI or network adapters, you may wish to complete all hardware installation before powering up the systems to run Memory Channel diagnostics.

5.1 Setting the Memory Channel Adapter Jumpers

The meaning of the Memory Channel adapter module jumpers depends upon the version of the Memory Channel module.

5.1.1 MC1 and MC1.5 Jumpers

The MC1 and MC1.5 modules (CCMAA-AA and CCMAA-AB respectively) have adapter jumpers that designate whether the configuration is using standard or virtual hub mode. If virtual hub mode is being used, there can be only two systems. One system must be virtual hub 0 (VH0) and the other must be virtual hub 1 (VH1).

The Memory Channel adapter should arrive with the jumpers set for standard hub mode (pins 1 to 2 jumpered). Confirm that the jumpers are set properly for your configuration. The jumper configurations are shown as if you were holding the module with the jumpers facing you, with the module end plate in your left hand. The jumpers are right next to the factory/maintenance cable connector, and are described in Table 5–1.

Table 5–1: MC1 and MC1.5 Jumper Configuration

If hub mode is:	Jumper:	Example:
Standard	Pins 1 to 2

1 2 3

Virtual: VH0 Pins 2 to 3

1 2 3

Virtual: VH1 None needed; store the jumper on pin 1 or 3

1 2 3

5–2Setting Up the Memory Channel Cluster Interconnect