Chapter 3: Subsystem Connection and Operation
Host Connection
Sample Topologies
3-5
3.2.3 Dual Path Redundant Connection
This is a high availability configuration centered around two (2) host servers,
each with one (1) single-ported HBA for redundant path connections.
Figure 3-3: Dual-Redundant Path Host Connection
NOTE:
To create dual redundant data paths on the host side, it is necessary to
install third-party failover software on the host computers.
Channel Settings
Host
CH0 and CH1
Drive
Via system bus, through the backplane
Configuration Information
RAID Controller
1
Host Server
2
Data Path Connection
Dual data paths
Host Channel Bandwidth
640 MB/s
Max. Number of Drives
16
This is a direct-attached configuration showing two (2) host
computers sharing the capacity in one (1) RAID subsystem. Drives
in the enclosure can be configured into one or more arrays, and
made available through individual host ports.
An Ethernet cable connects both computers to each other. This
configuration provides both physical path and host computer
redundancy. If one of the host channels becomes disconnected for
some reason, or the cable connecting one of the host ports to the