Dell PowerEdge RAID Controller 6i - Manual (Page 56)

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Installing and Configuring Hardware
Setting up Redundant Path Support on the
PERC 6/E Adapter
The PERC 6/E adapter can detect and use redundant paths to drives
contained in enclosures. With redundant paths to the same port of a device,
if one path fails, another path can be used to communicate between the
controller and the device. For more information about redundant paths, see
"Redundant Path With Load Balancing Support" on page 37.
To set up a configuration with redundant paths, both ports on a controller
must be cabled to the IN ports of a single enclosure.
To add multiple enclosures, both OUT ports of the first enclosure must be
cabled to the IN ports of the next enclosure.
If the connection between an OUT port on the controller and an IN port on
an enclosure fails, an alternate path exists through the second OUT port on
the controller and the second In port on the enclosure. For more information,
see Figure 4-11, Figure 4-12 and Figure 4-13.
NOTE:
The PERC 6/E adapter supports redundant paths when used with Dell
PowerVault MD1000 and Dell PowerVault MD1120 disk storage enclosures.
Figure 4-11 displays Redundant path Storage Configuration with one
enclosure.
Figure 4-11. Redundant Path Support Configuration With One Enclosure
Storage Storage
Dell_PERC6.1_UG.book Page 56 Wednesday, April 15, 2009 4:18 PM