Lenovo ThinkSystem D4390 Drive Enclosure Serial Attached SCSI (SAS) - 4U Rack-mountable - Hot Swappable Bays - 90 x HDD Supported - 90 x SSD Supported - 90 x Total Bay - 90 x 3.5" Bay

The Lenovo ThinkSystem D4390 Direct Attached Storage Enclosure offers newer high performance 24 Gbps SAS direct-attached drive-rich storage expansion capabilities that are designed to provide density, speed, scalability, security, and high availability for high-capacity application. The D4390 delivers enterprise-class storage technology in a cost-effective dense solution with flexible drive configurations of up to 90 drives in 4U rack space and host-RAID or JBOD ("Just a Bunch Of Drives") non-RAID host connectivity.