A Storwize® V3700 system
consists of one or more machine type 2077 and 2078 rack-mounted enclosures. Control
enclosures contain the node canisters that manage the system operation
and provide the host interfaces. Expansion
enclosures provide more extra drives that can be managed by the system. Enclosures
can support 2.5 inch (6.35 cm) small form factor drives or 3.5 inch
(8.89 cm) large form factor drives.
Several model types
exist for 2072 enclosures.
Control enclosure models:
- Machine type and model 2072-12C, which can hold up to 12 3.5-inch drives
- Machine type and model 2072-24C, which can hold up to 24 2.5-inch drives
- Machine type and model 2072-2DC, which is the direct current model that can hold up
to 24 2.5-inch drives
Expansion enclosure models:
- Machine type and model 2072-12E, which can hold up to 12 3.5-inch drives
- Machine type and model 2072-24E, which can hold up to 24 2.5-inch drives
- Machine type and model 2072-2DE, which is the direct current model that can hold up
to 24 2.5-inch drives
The machine type and model (MTM) are shown on
the labels on the front and the rear of each enclosure.
The base control enclosure supports 1 Gbps Ethernet
connections. In addition, an optional host interface adapter supports
an extra 1 Gbps Ethernet, 10 Gbps Ethernet, or Fibre Channel connection.
You must be able to distinguish between control enclosures and
expansion enclosures before you service the system. Be aware of the following differences:
- The model type that is shown on the labels.
- The model description that is shown on the left end cap.
- The number of ports at the rear of the enclosure. Control enclosures
have Ethernet ports, space for host interface adapters, and USB ports.
Expansion enclosures do not have any of these ports.