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36
en | Subsystem Connection and Operation
When setting up the configurations, please follow these steps:
1.
2.
3.
4.
5.
6.
5.2.2
Dual Hosts
Fig. 5.3 Dual Host Connection
In the example shown in Figure 5.3, the two (2) SCSI ports on the RAID subsystem are con-
nected to two (2) different host computers and an Ethernet cable connects both computers
to each other. This configuration provides both 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 host computer is damaged, the second path can transmit data from the sub-
system to the host computer. Similarly, in the clustered hosts configuration, the same array
can be accessed through different data paths and downtime will be minimized.
NOTICE!
i
To create dual redundant data paths on the host side, it is necessary to install third-party
failover software on the host computer.
Server
Subsystem
RAID Controllers
RAID Level
Disk Configuration
Drives
Host Bus Adapters
Data Path Connection
Table 5.2 Configuration Overview for Dual and Quad Server Connection
F.01U.027.799 | V2 | 2008.08
Power on the RAID subsystem.
Use the LCD panel or the terminal emulation program to access the firmware.
Create at least one (1) logical drive (LD0).
Map LD0 to CH0 or CH1.
Connect the server to CH0 or CH1 connectors.
Power on the servers.
RAID Subsystem DVA-16K | Installation Manual
Dual Server
Two (2)
One (1) RAID subsystem
One (1)
RAID 5
Two (2) or more logical drives
Sixteen (16) drive channels
Two (2) single port SCSI on two (2) servers
Dual-redundant data paths
Bosch Security System
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