The Hitachi D-W 800 is a robust storage solution designed for high capacity and efficiency in a data center environment. It features a rack-mountable 4U form factor and supports a maximum of 1152 small form factor (SFF) HDDs or SSDs, or 576 large form factor (LFF) HDDs or SSDs. The device is equipped with significant cache memory capabilities, supporting up to 512 GB. Additionally, it offers a maximum of 64 spare drives and can handle up to 480 RAID groups. Each volume can reach a size of up to 3 TB, which can be expanded to 4 TB by utilizing logical devices from other storage systems. The device allows for an impressive scale with support for 2,048 volumes per host group and RAID group, accommodating complex data management and storage needs. It can also connect with a maximum of 255 Fibre Channel devices and iSCSI hosts through network switches. The included hardware components, such as fan modules, power supplies, and I/O modules, contribute to its high reliability and operational efficiency.
