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Simple End-to-End Connection
Above is an example demonstrating simple end-to-end connections with each SFP port
connected to a host adapter. Multiple logical drives, logical volumes, and logical partitions
can be created and each mapped to the corresponding host channel ID/LUN combinations.
Note that MPIO multipath software or Linux Device Mapper is necessary for controlling and
optimizing the access to logical drives via multiple data paths.
DAS (Direct-Attached) Connection
NOTE
If a logical drive has to be accessed by different servers, file locking, FC switch
zoning, port binding, and multipath access control will be necessary in order to avoid
access contention.
Channels
Controller A
Controller B
Host
CH0, CH1, CH2, CH3
CH0, CH1, CH2, CH3
Configuration Information
Controller
2
Host server
2
Data path connection
Fault-tolerant data paths.
