Managing Serviceguard Eighteenth Edition, September 2010

Figure 2-5 Eight-Node Active/Standby Cluster
Point to Point Connections to Storage Devices
Some storage devices allow point-to-point connection to a large number of host nodes
without using a shared SCSI bus. An example is shown in Figure 2-11, a cluster
consisting of eight nodes with a SCSI interconnect. The nodes access shared data on
an XP or EMC disk array configured with 16 SCSI I/O ports. Each node is connected
to the array using two separate SCSI channels. Each channel is a dedicated bus; there
is no daisy-chaining of the SCSI bus.
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