NetApp FC4600 Hardware Cabling Manual page 150

Drive cabling
topologies for
the E2600
Controller-Drive
Tray
Drive cabling
topologies for the
E2600
Controller-Drive
Tray With DE1600
Drive Trays or
DE5600 Drive Trays
140
This section provides examples of drive cabling topologies for the E2600
controller-drive tray. The E2600 controller-drive tray can be connected to DE1600
drive trays, DE5600 drive trays, or combinations of these two drive trays. The total
number of drives in the storage array, including the drives in the controller-drive tray
and those in the drive trays, must not exceed 192.
NOTE Simplex systems do not provide redundant connections to drive trays. If a
connection or an environmental services module (ESM) fails, all drive trays that
connect to the controller-drive tray indirectly through the failed connection or drive
tray will become inaccessible.
Depending on the number of drive trays that you need to connect, see the applicable
figure for a cabling topology. Each example shows a duplex controller-drive tray
configuration with redundant paths to the drive trays. For a simplex controller-drive
tray configuration, use the cabling topology shown for controller A in the applicable
figure.
NOTE The following figures shows the SAS ports on a DE1600 drive tray or a
DE5600 drive tray. You may connect either of the SAS ports labeled SAS 1 and SAS
2 to the SAS expansion port on another drive tray or on a controller-drive tray. You
should not make connections to both the SAS 1 port and the SAS 2 port on the same
ESM.