NetApp FC4600 - Drive Channel Redundancy for the E5460 Controller-Drive Tray

Chapter 4: Drive Connection 63
Drive Channel
Redundancy for
the E5460
Controller-Drive
Tray
Each controller in an E5460 controller-drive tray has one drive port. When a
controller-drive tray has two controllers, the drive port on controller A and the drive
port on controller B form a redundant pair. The following figure shows the drive ports
on a dual-controller configuration.
NOTE To maintain data access in the event of the failure of a controller, an ESM, or
a drive channel, you must connect a drive tray or a string of drive trays to both drive
ports on a dual-controller configuration.
Figure 3 Redundant Path Pair on the E5460 Controller-Drive
TrayController-Drive Tray
1. Controller Canister A
2. Drive Expansion Connector (Connectors 2 and 4 comprise
a redun
dant path pair.)
3. Controller Canister B
4. Drive Expansion Connector (Connectors 2 and 4 comprise
a r
edun
dant path pair.)