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• The maximum length of an MC2 BN39B link cable is 10 meters (32.8
feet).
• In an MC2 configuration, you can use a CCMFB optical converter in
conjunction with the MC2 CCMAB host bus adapter or a CCMLB hub
line card to increase the distance between systems.
– The BN34R fiber-optic cable, which is used to connect two CCMFB
optical converters, is available in 10-meter (32.8-foot) (BN34R-10)
and 31-meter (101.7-foot) (BN34R-31) lengths. Customers may
provide their own fiber-optic cables to achieve greater separation
of systems.
– The Memory Channel fiber-optic connection may be up to 2
kilometers (1.24 miles) between two CCMFB optical converters
connected to CCMAB host bus adapters in virtual hub mode.
– The Memory Channel fiber-optic connection may be up to 3 kilometers
(1.86 miles) between a CCMFB optical converter connected to a
CCMAB host bus adapter and a CCMFB optical converter connected
to a CCMLB hub line card in standard hub mode (providing a
maximum separation of 6 kilometers (3.73 miles) between systems).
• Always examine a Memory Channel link cable for bent or broken pins.
Be sure that you do not bend or break any pins when you connect or
disconnect a cable.
• For AlphaServer 8200, 8400, GS60, GS60E, or GS140 systems, the
Memory Channel adapter must be installed in slots 0-7 of a DWLPA
PCIA option; there are no restrictions for a DWLPB.
• For AlphaServer 1000A systems, the Memory Channel adapter must be
installed on the primary PCI (in front of the PCI-to-PCI bridge chip) in
PCI slots 11, 12, or 13 (the top three slots).
• For AlphaServer 2000 systems, the B2111-AA module must be at
Revision H or higher.
For AlphaServer 2100 systems, the B2110-AA module must be at
Revision L or higher.
Use the
examine console command to determine if these modules are
at a supported revision as follows:
P00>>> examine -b econfig:20008
econfig: 20008 04
P00>>>
If a hexadecimal value of 04 or greater is returned, the I/O module
supports Memory Channel.
If a hexadecimal value of less than 04 is returned, the I/O module is not
supported for Memory Channel usage.
Hardware Requirements and Restrictions 2–5