Quantum StorNext QD7000 Hardware Manual page 100

92 | Hardware Cabling Guide
One E5424 or E5412 controller-drive tray or one EF540 flash array and two DE6600 drive
trays
The following figure shows how the cabling pattern can be continued for additional drive trays until
the 15 drive tray limit or the limit on the total number of drive slots in the storage array is reached.
The figure uses the schematic representation for DE1600 drive trays or DE5600 drive trays. However,
DE6600 drive trays can be included in the storage array as long as the same cabling pattern,
connecting SAS Expansion ports to SAS In ports, is followed.
The cabling pattern is independent of the physical location of the trays in the cabinet.
Important:
If the storage array includes DE6600 drive trays, install those drive trays beginning from the
bottom of the cabinet so that the cabinet does not become top-heavy. A top-heavy cabinet has a
greater risk of falling over.
Important: The cabling pattern is independent of the physical location of the trays in the cabinet.
If the controller-drive tray is installed in the middle of the cabinet, as shown in the figures above,
the physical cabling pattern will be different from what is shown, although the topology will be
consistent. If the storage array includes DE6600 drive trays, install those drive trays beginning
from the bottom of the cabinet so that the cabinet does not become top-heavy. A top-heavy cabinet
has a greater risk of falling over.