Galaxy GHDXS2-1430R-16F4D Installation and Hardware Reference Manual
3-10
Configuration Rules:
1.
When cascading multiple RAID subsystems, you should disable the
onboard hub, and separately cross-link the host ports on different RAID
controllers.
2.
When connecting to a switched fabric, onboard hub should be disabled.
3.
Host ports on Controller A always connect to the host ports on the
Controller A of the next enclosure. Controller A is defined as one that is
installed in the upper slot location, usually the RAID controller
managing the whole subsystem.
4.
If Controller A fails, host LUNs previously associated with Controller
A will be managed by Controller B.
5.
Depending on I/O characteristics, each configured array should be
properly optimized either for Random or Sequential I/Os.
6.
You may also partition a logical capacity into two or more volumes and
let each server access separate volumes.
7.
With fault-tolerant cabling, host multipathing software is necessary.
3.4.2 Dual-Controller,
Fault-Tolerant
Connection
The diagram below shows the volumes on a RAID array shared over Fibre
Channel network.
Figure 3-6: Shared Storage over Fibre Channel Network
Please note, in the example shown in
Figure 3-6,
the host channels are
configured in the following way.