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The KR4276V2 is a 4U dual-socket high-density storage rack server powered by the 4th Gen Intel Xeon Scalable processors. With its compact size, high capacity, flexible I/O, and green and energy-efficient design, the server offers excellent storage capabilities to cater to both existing and future service expansion requirements. Additionally, it supports 60 3.5-inch drives in a 4U space to help save server room space and reduce storage costs, making it an ideal choice for cloud storage, video storage, big data, archiving and other scenarios.

Key Features
  • High storage capacity

    The server leverages innovative solutions to maximize storage capacity and density. In a 4U space, it can accommodate 60 3.5-inch drive, delivering a remarkable storage capacity of up to 1.3 PB.

  • Flexible I/O configuration

    Supports flexible front and rear I/O configurations. The former realizes an innovative cold and hot aisle design in the server room, helping decrease the average fault rate of thermo-sensitive components by over 90% and prolonging their service lifetime by over 300%.

  • Green and energy-efficient design

    The power consumption management technology enables you to accurately monitor and control the power consumption of the system in real time, and can lower the overall power consumption by 70% in combination with the HDD hibernation technology (including user-defined deep sleep mode).

Technical Specifications



Form Factor

4U rack server


One or two 4th Gen Intel Xeon Scalable processors

Up to 60 cores, with a max Turbo frequency of 4.2GHz

4 UPI links per CPU at up to 16 GT/s per link

Up to 350W TDP


Intel C621A


32x DIMM slots that support up to DDR5 DIMMs (4,800 MT/s)


Rear I/O

Front I/O

Up to 60x 3.5-inch hot-swappable SAS/SATA drives

10x 2.5-inch hot-swappable SAS/SATA drives, with up to 8x NVMe drives (optional)

2x M.2 SSDs

Up to 60x 3.5-inch hot-swappable SAS/SATA drives

Up to 4x 2.5-inch SAS/SATA/NVMe SSDs

2x M.2 SSDs

I/O Expansion Slot

Up to 7x PCIe 5.0 slots, including 2 OCP 3.0 slots

Up to 5x PCIe 5.0 slots, including 1 OCP 3.0 slot

Storage Controller

RAID/SAS controller

Onboard PCH that supports 14 SATA connectors

Intel onboard NVMe controller and optional Intel NVMe RAID key


Supports multiple types of network expansion, and 2 hot-swappable OCP 3.0 cards

Supports the expansion of PCIe 5.0 expansion cards and smart NICs



1x USB 2.0 port, 1x USB 3.0 port, 1x DB15 VGA port, 1x USB type-C port


2x USB 3.0 ports, 1x DB15 VGA port, 1x COM port (Micro USB), 1x RJ45 management network port


1x USB 3.0 port


Hot-swappable fans with N+1 redundancy

Power Supply

Supports 1,600W/2,000W/2,700W CRPS power supplies with 1+1/2+2 redundancy

System Management

Integrated with 1 independent 1,000 Mb/s network port, dedicated to IPMI remote management


Two-factor authentication, TPM 2.0, security panel, intrusion alert, BMC/BIOS redundancy, power capping, etc.

Operating System

Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, CentOS, etc.

Dimensions (W × H × D)

447mm × 174.5mm × 850mm


89 kg (with all drives installed) (For details, refer to the White Paper)

Operating Temperature

5°C to 40°C (For details, refer to the White Paper)


Relevant Information

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