Storwize V3700 hardware components

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.