Lenovo ThinkSystem Modular Enclosure models (Includes the dual-port SMM) 4-slot x16 shuttle, 2x2000W

Machine type
7X20: D2 Enclosure (ships with single port SMM)
7X22: Modular Enclosure (ships with dual port SMM)

Form factor
2U rack-mounted chassis.

Server support
Up to 4 servers per chassis.

Servers per 42U rack
Up to 84 servers in 21 enclosures

System Management Module
D2 Enclosure: Single port SMM is standard, supports Dual Port SMM as a field upgrade
Modular Enclosure: Dual Port SMM is standard

The hot-swappable System Management Module (SMM) is the management device for the enclosure. Provides integrated systems management functions and controls the power and cooling features of the enclosure. Provides remote browser and CLI-based user interfaces for remote access via the dedicated Gigabit Ethernet port. Remote access is to both the management functions of the enclosure as well as the XClarity Controller (XCC) in each server.
Supports the SMM with one Ethernet port (D2 Enclosure) or the Dual Port SMM with two Ethernet ports (Modular Enclosure, or the D2 Enclosure with the Dual Port SMM installed). The Dual Port SMM allows a single incoming Ethernet connection to be daisy chained across 7 enclosures and 28 servers, thereby significantly reducing the number of Ethernet switch ports needed to manage an entire rack of SD530 servers and enclosures.

Ethernet I/O Module
8-port Ethernet I/O Module (EIOM) routes two 10 GbE connections to each of the four servers.

Controls and LEDs
SMM has four LEDs: system error, identification, status, and system power. Each power supply has AC, DC and error LEDs

Power supplies
Two hot-swap power supplies either 1100 W, 1600 W, or 2000 W functioning as a redundant pair. Power supplies must be identical. Power supplies require a 200-240 V ac, 50 or 60 Hz supply, although the 1100 W also supports 100-127V ac 50 or 60 Hz. Power supplies are installed at the rear of the chassis. 80 PLUS Platinum certified. Built-in overload and surge protection.

Cooling
Five hot-swap system fans, accessible via removable panel in the top cover of the enclosure.

Hot-swap parts
Power supplies, fans, System Management Module

Power consumption
Input kilovolt-amperes (kVA): minimum: 0.153 kVA,  maximum: 2.61 kVA

Limited warranty
Three-year customer-replaceable unit and onsite limited warranty with 9x5/NBD coverage.

Dimensions
2U chassis. Height: 87 mm (3.5 inches), depth: 892 mm (35.1 inches), width: 488 mm (19.3 inches)
Weight Minimum configuration (with one minimally configured node): 22.4 kg (49.4 lbs)
Maximum configuration (with four fully configured nodes): 55.0 kg (121.2 lbs)