GIGABYTE R284-S91-AAJ1 2U barebone server 32-bay E3.S Gen5 NVMe

Dual-socket Xeon 6 barebones

The GIGABYTE R284-S91-AAJ1 is a 2U rackmount barebones server built for dual Intel Xeon 6 processors in LGA 4710 sockets. It targets infrastructure teams deploying high-density storage or compute nodes where the chassis supplies the bays, power and cooling but no CPUs, memory or drives. Builders who need a smaller 1U form factor, integrated graphics beyond the Aspeed AST2600, or pre-validated configurations should look elsewhere.

Gen5 NVMe interface limits

The front panel holds 32 E3.S Gen5 NVMe hot-swap bays, split 16 from each CPU, while the rear adds two 2.5-inch SATA/SAS-4 bays. Internal M.2 sockets provide two PCIe Gen5 x4 slots from CPU 1 and one Gen5 x2 slot from CPU 0 that is already occupied for SATA. Expansion is restricted to one FHHL PCIe Gen5 x16 slot and one OCP NIC 3.0 PCIe Gen5 x16 slot, so additional accelerators or network adapters compete for a single full-height lane budget. Network connectivity tops out at dual 1 Gigabit ports from the Intel I350-AM2 controller.

32-bay capacity and memory headroom

Thirty-two E3.S bays give dense flash capacity in a 2U envelope, with each CPU feeding half the backplane directly. Memory scales to 32 DDR5 RDIMM or MRDIMM slots across eight channels, supporting up to 6400 MT/s at one DIMM per channel or 5200 MT/s at two per channel, while MRDIMM reaches 8000 MT/s. Processor TDP headroom extends to 350 W per socket, so thermal design must accommodate the highest-wattage Xeon 6700 or 6500 series parts chosen.