Chapter 1
Sun StorEdge D2 Array Overview
1-21
1.8.2
Split-Bus Configuration
A split-bus configuration splits a single Sun StorEdge D2 array between two ESMs,
with each ESM controlling half the disks. (
shows how the disks are
numbered.) The array can then be used either as two independent storage
subsystems or as a single high-availability system.
■
Two ESMs must be installed
■
Switch number 1 in the switch bank on the front of both ESMs must be set Down.
shows the split-bus configuration with two ESMs connected to two
different HBAs on a single host. The array is configured in this example for high
availability. In this configuration, data is mirrored in the two separate sets of disks.
FIGURE 1-14
High-Availability Split-Bus Configuration With Two ESMs, Two Host
Adapters, and a Single Host
Note –
The SCSI cable from a host can be connected to either the SCSI-A or SCSI-B
connector on the ESM.
Summary of Contents for StorEdge D2
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