Users Guide
continues to appear in the eld even as the redundant path is removed. The redundant path ceases to appear only when it is cleared
in the storage management.
In a daisy-chain scenario, more than one enclosure can be connected to a controller in a redundant path mode. You can connect up
to four MD1400 and MD1420 to a PERC H840 controller and SAS 12 Gbps adapter in a daisy-chain enclosure. For an example of a
daisy-chain conguration (for PERC 6/E controller), see the following image:
If the communication channel between the connector and the rst enclosure is lost, the redundant path conguration is lost. In this
case, the health of the logical connector is displayed as critical. Navigate to the Information/Conguration page of the logical
connector to view details of the Path Health. For a brief outline of this scenario, see the following table:
Table 13. Path between Controller and Enclosure 1
Health of Logical Connector Path between Controller and Enclosure 1
Connector 0 (C0) Connector 1 (C1)
Available Available
Available Disconnected
Disconnected Available
However, if the communication channel between any two enclosures is lost, the redundant path conguration is degraded and the
health of the logical connector is displayed as degraded. For a brief outline of this scenario, see the following table.
Table 14. Path between Enclosure
n
and Enclosure
n
+1
Health of Logical Connector Path between Enclosure
n
and Enclosure
n
+1
Connector 0 (C0) Connector 1 (C1)
Available Available
Available Disconnected
Disconnected Available
In the above scenario, the enclosure status is displayed in warning mode. Clicking Information/Conguration in the Enclosures page
displays all enclosure components (EMMs, Fans, Physical Disks, Power Supplies, and Temperature) in normal condition. To view the
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