Digital sufficiency, an emerging concept from the sustainable computing literature, can inform interface design to better manage and potentially reduce energy consumption in data centers, which is intensifying due to AI and data growth, despite energy efficiency efforts. Since 26% of data center energy consumption stems from cloud storage and servers, this research integrates digital sufficiency with existing HCI guidelines to enable cloud providers to respond to demands for sustainable infrastructure and facilitate user reflection. We conducted an online survey to understand users’ storage needs, awareness of climate impacts, and openness to sustainable storage. Our findings highlight the limited awareness among users of the carbon footprint associated with data centers and a strong demand for more sustainable storage options once they become aware. To empower users to reflect on climate impacts and align storage practices with their personal sustainability goals, we propose interface design recommendations that challenge the status quo.