Galaxy A16F-R2431 Installation and Hardware Reference Manual
3-14
Sample Topologies
Configuration Rules:
1.
For details on the relationships among host links, host ID/LUNs, and
logical configurations, you may refer to
Chapter 12 Redundant
Controller
in your firmware operation manual.
2.
Shown above is a DAS application using independent host links to the
host ports on two RAID controllers.
3.
The configuration ensures that an application server can always access a
storage array even in the event of cabling component failure.
4.
The onboard hub should be enabled so that if a controller fails, access to
the array should continue with the data link to the surviving controller.
5.
If Controller A fails, host LUNs previously associated with Controller
A will be managed by Controller B.
6.
Depending on I/O characteristics, each configured array should be
properly optimized either for Random or Sequential I/Os.
7.
You may also partition a logical capacity into two or more volumes and
let each server access separate volumes.
8.
With fault-tolerant cabling, host multipathing software is necessary.
