HP Surestore Disk Array 12h and FC60 - Manual (Page 131)

Topologies for Windows NT and Windows 2000 131
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Topologies for Windows NT and Windows 2000
The topology of a network or a Fibre Channel Arbitrated Loop (Fibre Channel-AL) is the
physical layout of the interconnected devices; that is, a map of the connections between
the physical devices. The topology of a Fibre Channel-AL is extremely flexible because of
the variety and number of devices, or nodes, that can be connected to the Fibre Channel-
AL. A node can be a host system or server, a Fibre Channel hub or switch, or the controller
modules in a disk array.
The tested topologies supported on Windows NT and Windows 2000 are illustrated in this
section. Included are the error handling capabilities of the topologies.
Note Unsupported Single Hub Topologies on Windows. Due to limitations in the
RDAC driver included with the HP Storage Manager 60 (SM60) software, some
topologies that use a single hub are not supported. The RDAC driver supports
only two data paths to the FC60 Disk Array, so any topology that provides more
than two paths will not work. This is most common is topologies using a single
hub. Topologies using a Fibre Channel switch are supported.
Any topology that is configured in the following manner is not supported with
the SM60 software:
A host with dual Fibre Channel adapters both connected to a single hub,
with the hub then connected to both controllers on the disk array.
Figure 44 shows a sample of an unsupported Windows topology.