Chapter 3: Subsystem Connection
3.3 Sample
Topology
Host Links:
Figure 3-3: Host Port Connections with a Dual-controller Subsystem
Shown above is an example showing a redundant-controller RAID
with its disk drives configured into two logical drives and fault-tolerant
host links. Use of Multi-path software, e.g., Infortrend’s EonPath, is
recommended for its load-balancing algorithms. The configuration is
summarized as follows:
Logical Drives
LD0 + LD1 (each with 6 members)
Host LUN
Mapping
LD0 -> CH0 AID6 + CH0 BID7
LD1 -> CH1 AID6 + CH1 BID7
Host links
Server #0: Controller A CH0 port + Controller B CH0
port
Server #1: Controller A CH1 port + Controller B CH1
port
* 3
rd
-party Multi-path will be necessary to control the access/failover through
fault-tolerant links.
Sample Topology
3-5
