IBM System Storage DS4000 EXP810 Expansion Unit

The 4 Gbps-capable IBM System Storage EXP810 Storage Expansion Unit (part number 181281H) offers a new 16-bay disk enclosure for attachment to selected DS4000 Midrange Disk Systems, with up to 4.8 terabytes (TB) physical capacity per expansion unit at initial introduction. A 4-Gbps-capable controller system is required to achieve 4 Gbps drive channel operation.The EXP810 Storage Expansion Unit is designed to accommodate the new 2 Gbps Fiber Channel Enhanced Disk Drive Modules (E-DDMs), and future 4 Gbps Fiber Channel E-DDMs and Serial ATA (SATA) E-DDMs.The EXP810 Storage Expansion Unit is rack-mountable, occupies 3U rack space, and comes standard with two 4 Gbps shortwave Small Form Factor Pluggable (SFP) fiber optic transceivers for connection to selected DS4000 midrange disk systems.Additional SFP transceivers can be added to the EXP810 by use of Shortwave Transceiver option (part number 26K7941), that populates two additional drive ports for configurations consisting of multiple expansion units connected to a midrange disk system. The EXP810 includes built-in redundant power supplies and cooling components to help improve reliability and availability.