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Step 2 - MEMORY CHANNEL — Optional
Configuration Guidelines
Each Memory Channel adapter must be the only device on the PCI/PCI-X bus segment.
Two-node clusters can be configured by ordering one adapter (CCMAB-BA) for each node and one cable (BN39B-04
or BN39B-10) between the two systems.
For a two-node cluster that will not need to be rebooted when adding additional members, order one adapter
(CCMAB-BA) and one cable (BN39B-04 or BN39B-10) for each node plus one hub (CCMHB-AA) for the cluster.
For three or four node clusters, order one adapter (CCMAB-BA) and one cable (BN39B-04 or BN39B-10) for each
node and one hub (CCMHB-AA) for the cluster.
The hub (CCMHB-AA) includes four line cards and supports up to four nodes; expansion up to eight system nodes
can be achieved by adding up to four line cards (CCMLB-AA).
If two adapters (CCMAB-BA) are configured in each system, a second hub (CCMHB-AA) is required.
If nodes must be separated by a distance longer than standard copper cables allow, the CCMFB option converts the
output of the standard controller or line card to single-mode fiber optic cable. The fiber optic connection may be up to
2,000 meters long between two controllers connected in virtual hub mode, or 3,000 meters between a controller and a
hub. (The connection from the hub to a second system may also be 3,000 meters.) The CCMFB option requires a
second PCI slot in the system from which it draws power only. It is normally connected to the corresponding controller
with the short cable, BN39B-01. The CCMFB option is also used in the hub where it occupies a slot normally used by
a line card, limiting expansion to four radial fiber optic connections.
The hub expansion box (CCMHB-BA) provides additional slots for up to eight fiber optic connections. Two standard
length single-mode fiber optic cables are available (BN34R-10 and BN34R-31); however, users normally provide this
fiber optic connection. Fiber optic connectivity is completely transparent to the systems using it and has no
performance impact
Description
Device Type
Part Number
Maximum Quantity Tested & Supported
U=Tru64 UNIX
O=OpenVMS
L=Redhat V7.2 Linux
per system
per hard partition: per system
ES47
Tower
Workstation
ES47 ES80 GS1280
Memory Channel Adapter
Memory Channel Adapter
PCI 5.0/3.3V,
32 b, 33 MHz
CCMAB-BA
2/U
2/O
2:4/U
2:4/O
2:8/U
2:8/O
2:64/U
2:64/O
Copper-to-single mode fiber optic
converter
PCI 5.0/3.3V,
32 b, 33 MHz
CCMFB-BA
2/U
2/O
2:4/U
2:4/O
2:8/U
2:8/O
2:64/U
2:64/O
QuickSpecs
HP AlphaServer GS1280 Systems
ES/GS Common Options
DA - 11921 Worldwide — Version 24 — July 23, 2007
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