Quantum StorNext QD7000, Руководство по оборудованию

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Drive Shelves
The following figures show the SAS ports on a DE212C drive shelf or a DE224C drive shelf. The I/O
modules (IOMs) occupy the top half of the shelf. Each IOM has four SAS-3 expansion ports. You
can connect these ports to SAS-3 expansion ports on another drive shelf or drive tray or to SAS
expansion ports on a controller shelf or controller-drive tray.
1. IOM A
2. SAS port 1
3. SAS port 2
4. SAS port 3
5. SAS port 4
Drive tray cabling topologies for the E5612 and E5624 controller-drive trays
and EF560 flash arrays
The figures in this section show representative cabling configurations. The configurations shown
guarantee that redundant data paths exist between the controller-drive tray and all attached drive trays
in a storage array. These controller-drive trays can be cabled to SAS-2 drive trays (DE1600, DE5600,
and DE6600), or various combinations of those three models of drive tray. You can also cable E5612,
E5624, and E5660 controller-drive trays to SAS-3 drive trays (DE212C, DE224C, and DE460C). For
any one controller-drive tray, you must not exceed the limit of 15 connected drive trays or the limit
for the total number of drive slots in the storage array.
Configurations that include SAS-3 drive trays require cables with a mini-SAS connector on one end
and a mini-SAS HD connector on the other end. These cables connect between the controllers and
the SAS-3 drive trays or between SAS-2 drive trays and SAS-3 drive trays. The mini-SAS HD
connectors attach to the IOMs in the SAS-3 drive trays, while the mini-SAS connectors attach to the
ESMs in SAS-2 drive trays or to the controllers in the controller-drive tray. If your configuration has
a mix of SAS-2 and SAS-3 drive trays, group the SAS-3 drive trays together at the bottom or the top
of the stack.
Note:
The EF560 controller-drive tray can be cabled to the DE5600 drive trays only. The total
number of drives in the storage array, including the drives in the EF560 controller-drive tray and
those in all of the attached drive trays, must not exceed 120. The total number of trays in the
storage array, including the EF560 controller-drive tray and all of the attached drive trays, must not
exceed five. The drive trays must contain only solid-state disks (SSDs).
When you cable the storage array, keep these points in mind:
• To connect an ESM/IOM to a controller-drive tray, use both of the SAS in ports on the ESM or
two of the SAS expansion ports on an IOM. Connect one SAS in port (or SAS expansion port) to
a SAS expansion port on controller A and the other SAS in port (or SAS expansion port) to a SAS
Expansion port on controller B in the controller-drive tray.
Drive shelf or drive tray cabling | 77