Technical data

Order an H3095-AA module to upgrade an AlphaServer 2000 or an
H3096-AA module to upgrade an AlphaServer 2100 to support Memory
Channel.
• For AlphaServer 2100A systems, the Memory Channel adapter must be
installed in PCI 4 through PCI 7 (slots 6, 7, 8, and 9), which are the
bottom four PCI slots.
2.3 Host Bus Adapter Restrictions
To connect a member system to a shared SCSI bus, you must install a host
bus adapter in an I/O bus slot.
The Tru64 UNIX operating system supports a maximum of 64 I/O buses.
TruCluster Server supports a total of 32 shared I/O buses using KZPSA-BB
host bus adapters, KZPBA-CB UltraSCSI host bus adapters, or KGPSA
Fibre Channel host bus adapters.
The following sections describe the host bus adapter restrictions in more
detail.
2.3.1 Fibre Channel Requirements and Restrictions
Table 2–1 lists the supported AlphaServer systems with Fibre Channel and
the number of KGPSA-BC or KGPSA-CA PCI-to-Fibre Channel adapters that
are supported on each system at the time the TruCluster Server Version 5.1A
product was shipped. For the latest information about supported hardware,
see the AlphaServer options list for your system at the following URL:
http://www.compaq.com/alphaserver/products/options.html
Table 2–1: AlphaServer Systems Supported for Fibre Channel
AlphaServer System
Number of Adapters Supported
in Fabric Topology
Number of Adapters
Supported in Loop
Topology
AlphaServer 800
2
—
AlphaServer 1200
4
—
AlphaServer 4000, 4000A, or 4100
4
—
AlphaServer DS10
22
a
AlphaServer DS20 and DS20E
42
a
AlphaServer ES40
42
a
AlphaServer 8200 or 8400
b
63
c
,32
d
—
2–6 Hardware Requirements and Restrictions