Zella Stack micro data center ships by courier, scales 24RU to 48RU, cools up to 124kW

Zella DC unveiled Zella Stack at Yotta 2026, an indoor micro data center shipped by standard courier and assembled on site from stackable blocks. It starts at 24RU (115kg) and grows to 48RU (185kg), with cooling options up to 124kW including liquid-cooled compute. Pricing was not disclosed; an outdoor version is planned for H2 2027.

• Base 24RU configuration weighs 115kg, top 48RU weighs 185kg
• Cooling options reach 124kW, mixing air- and liquid-cooled compute
• Cooling blocks take 6RU to 12RU, leaving 9–39RU for IT
• Outdoor version of Zella Stack planned for H2 2027