Abstract The Lenovo Storage E1012 and E1024 Disk Expansion Enclosures offer universal storage expansion capabilities that are designed to provide simplicity, speed, scalability, security, and high availability for small to large businesses. The E1012 and E1024 deliver enterprise-class storage technology in a cost-effective solution with flexible drive configurations and RAID or JBOD (non-RAID) host connectivity or Lenovo storage area network (SAN) array expansion. This product guide provides essential pre-sales information to understand the structure of the E1012 and E1024 expansion enclosure offerings, their key features and specifications, components and options, and configuration guidelines. Introduction The Lenovo Storage E1012 and E1024 Disk Expansion Enclosures offer universal storage expansion capabilities that are designed to provide simplicity, speed, scalability, security, and high availability for small to large businesses. The E1012 and E1024 deliver enterprise-class storage technology in a cost-effective solution with flexible drive configurations and RAID or JBOD (non-RAID) host connectivity or Lenovo storage area network (SAN) array expansion. The E1012 and E1024 expansion units are designed for a wide range of workloads, including big data and analytics, video surveillance, media streaming, private clouds, file and print serving, e-mail and collaboration, and databases.Did you know? The E1012 and E1024 expansion enclosures offer flexible drive configurations with the choice of 2.5-inch and 3.5-inch drive form factors, 10K or 15K rpm SAS and 7.2K rpm NL SAS hard disk drives (HDDs) and self-encrypting drives (SEDs), and SAS solid-state drives (SSDs). With support for daisy chaining, the E1012 can be scaled up to 960 TB for capacity-optimized configurations, and the E1024 can be scaled up to 192 drives for performance-optimized configurations. The E1012 and E1024 expansion units are universal enclosures that can be used with Lenovo System x and ThinkServer systems as direct attach storage (DAS) or as expansion for the Lenovo Storage S2200 and S3200 storage area network (SAN) arrays.