Falcon 24 Dual Fibre Installation and Hardware Reference Manual
Figure 4
-
6: Clustered Servers with Redundant Paths
Channel Settings
Host
CH0 and CH1
Drive
Via system bus, through the backplane
4
th
DIP Switch
Hub enabled
Configuration Information
RAID Controllers
2
Host Servers
2
Data Path Connection
Dual data paths
Host Channel Bandwidth
400 MB/s
Max. Number of Drives
24
•
This is a direct-attached configuration showing two (2) hosts sharing
the capacity in one (1) RAID subsystem. Drives in the enclosure can be
configured into one or more arrays, and made available through
individual host ports.
•
Each configured array (logical drive) is separately
mapped (or
associated) with more than one host ID/LUN. A logical configuration of
drives may appear as two array volumes to the host, and the multi-path
management software on the host should recognize one as active and
the other as a standby. The management software should bring up the
standby if the FC link connecting the active array fails.
•
If a server in a clustered pair fails or a host bus is disconnected, the
surviving server needs to access the arrays originally accessed by the
4-10
Host Connection Sample Topologies
