Innovation is built in to the ThinkServer RD550. A cleverly engineered design allows more storage density and I/O connectivity than ever before—giving you the performance and capacity of a 2U system in a 1U form factor. By creating smaller drive trays and a slightly larger chassis within the same 1U space, the RD550 offers a total of up to 12 bays, which can be used for data storage or better performance. Two additional enterprise-class M.2 solid-state drives (SSDs) are available as an option for secure booting, as well as SD card options for hypervisor booting. Plus, for ultimate performance, the industry-unique Lenovo AnyBay design allows multiple storage types in the same drive bay, including front-accessible PCIe SSD.