Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Manual de Serviço descarregar pdf (Página 53)

• 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

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Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Manual de Serviço Página 53