Lenovo ThinkSystem DE Series - Replace controller in DE2000 H or DE4000 H duplex configuration

Specifications of drive shelves
The following information is a summary of specifications of the 2U DE Series drive shelves (also called
expansion shelves).
• “Specifications of DE120S” on page 18
• “Specifications of DE240S” on page 20
Note: The following values can vary depending on your model and configuration.
Specifications of DE120S
Specification DE120S
Dimension
• Form factor: 2U
• Height: 87 mm (3.43 inches)
• Width:
– With mounting flanges: 480 mm (18.9 inches)
– Without mounting flanges: 447 mm (17.6 inches)
• Depth:
– With cable management arm: 534 mm (21.02 inches)
– Without cable management arm: 505 mm (19.88 inches)
Weight 16 kg (35.27 lb)
Supported drives
• 3.5-inch NL-SAS drives
• 2.5-inch SAS SSD/HDD drives
System clearance dimension The clearance needed for proper ventilation and heat dissipation is as follows:
• Front:
– For cooling: 153 mm (6.02 inches)
– For maintenance: 610 mm (24.02 inches)
• Rear:
– For cooling: 153 mm (6.02 inches)
– For maintenance: 330 mm (12.99 inches)
18 ThinkSystem DE Series Hardware Installation and Maintenance Guide for 2U Enclosures