SilverStone RM61-312 6U Rackmount Server Chassis

SKU: SST-RM61-312

Form Factor: 6U Rackmount (438 x 265 x 522mm)

Motherboard: SSI-EEB, SSI-CEB, E-ATX, ATX, Micro-ATX, Mini-ITX

Hot-Swap Bays: 12 x 3.5" (Mini-SAS HD SFF-8643 x 3)

Radiator Support: Up to 360mm on front, left and right

Power Supply: Dual: ATX / Mini Redundant / 2U Redundant + second ATX

Expansion: 8 slots, cards up to 340mm

The SilverStone RM61-312 is a 6U rackmount server chassis designed for storage servers, professional workstations, and GPU computing systems requiring hot-swappable storage, extensive liquid cooling, and flexible power configurations. Supporting SSI-EEB, SSI-CEB, E-ATX, ATX, Micro-ATX, and Mini-ITX motherboards, it provides a versatile foundation for demanding server hardware. Its durable steel construction, twelve front-accessible hot-swap drive bays, and support for horizontal rackmount or upright placement make it suitable for professional storage and industrial computing environments.

Featuring twelve hot-swappable 3.5" drive bays that also accommodate compatible 2.5" drives, the RM61-312 integrates a 12-port SAS/SATA backplane with three Mini-SAS HD SFF-8643 connectors and SGPIO support. It also accommodates four internal 2.5" drives, up to three 360mm radiators across the front and side mounting positions, and eight PCI expansion slots. Dual PSU positions support a primary PS2 (ATX), Mini Redundant, or 2U Redundant power supply alongside an optional secondary PS2 (ATX) unit, while two included rear 80mm fans and a lockable removable front door provide additional cooling and physical security features.

Why Choose This SilverStone RM61-312 6U Rackmount Server Chassis

  • Provides twelve front-accessible 3.5" hot-swap bays, four internal 2.5" positions, and a 12-port SAS/SATA backplane with three Mini-SAS HD SFF-8643 connectors.
  • Supports SSI-EEB, SSI-CEB, E-ATX, ATX, Micro-ATX and Mini-ITX motherboards, eight expansion slots, and graphics cards up to 340mm long.
  • Accommodates up to three 360mm radiators across the front and side mounting positions, with two included rear 80mm fans.
  • Supports a primary PS2 (ATX), Mini Redundant or 2U Redundant PSU, plus a secondary PS2 (ATX) PSU, with front USB Type-C connectivity.

1 Year Warranty

12-Bay Hot-Swap

Triple 360mm Radiators

Overview

SilverStone RM61-312 is a 6U rackmount chassis that pairs 12 hot-swap drive trays with room for three 360mm radiators. It takes SSI-EEB boards, two power supplies and 8 expansion slots, so one box can handle storage and liquid-cooled compute. Local Singapore warranty support through Mansa.

Who it suits

  • If your server stores data and runs hot GPUs, 12 front hot-swap trays sit under a cooling layout that takes three 360mm radiators.
  • Drives connect through a 12 Gb/s Mini-SAS HD backplane with SGPIO, and take 2.5" SSDs or 3.5" HDDs in SAS or SATA.
  • Power-hungry builds can use a primary ATX, Mini Redundant or 2U Redundant PSU alongside a second ATX power supply.
  • Not ideal for graphics cards longer than 340mm. The RM52 offers more GPU length, but its maximum 512mm clearance requires removing front cooling components and the internal radiator bracket.

Before you buy

  • SAS drives need a SAS controller. The backplane uses 3 x Mini-SAS HD SFF-8643 connectors, 4 drives each.
  • CPU cooler height is 132mm with the GPU holder installed, or 150mm without it.
  • Only the 2 x 80mm rear fans are included. Plan to add your own front, side and internal fans or radiators.
Full Specifications

Model
SST-RM61-312

Chassis Form Factor
6U rackmount, horizontal or vertical placement

Material
Steel

Motherboard Support
SSI-EEB, SSI-CEB, Extended ATX, ATX, Micro-ATX, Mini-ITX

HDD Backplane
12 ports SAS / SATA to 12 Gb/s Mini-SAS HD SFF-8643 x 3 with SGPIO

Backplane Power
4-pin peripheral x 6

Interface
SAS-1 / SAS-2 / SAS-3, SATA-1 / SATA-2 / SATA-3

Drive Support - External
3.5" hot-swap x 12 (2.5" SSD or 3.5" HDD)

Drive Support - Internal
2.5" x 4

Cooling - Front
120mm x 3

Cooling - Rear
80mm x 2 (2 x 80mm fans included)

Cooling - Side
Left: 120mm x 3 / 140mm x 2; right: 120mm x 3 / 140mm x 2

Cooling - Internal
80mm x 3

Radiator Support - Front
120mm / 240mm / 360mm

Radiator Support - Left
120mm / 140mm / 240mm / 280mm / 360mm

Radiator Support - Right
120mm / 240mm / 360mm

CPU Cooler Clearance
132mm with GPU holder, 150mm without

Expansion Slots
8

Expansion Card Size
340mm length, 156mm width

Graphics Card Support
GPU holder

Power Supply - Primary
PS2 (ATX) / Mini Redundant / 2U Redundant

Power Supply - Secondary
PS2 (ATX)

Front I/O
1 x USB3 Type-C, 2 x USB3 Type-A

Front Buttons
Power On/Off, system reset

LED - Chassis
Power (blue), HDD Access (green), LAN x 2 (green)

LED - HDD Tray
HDD Power x 12 (yellow), HDD Access x 12 (blinking green)

Dimensions
438mm (W) x 265mm (H) x 522mm (D)

Volume
60.6 litres

Net Weight
17.9 kg

Warranty

1 YEAR WARRANTY

Avertek Enterprises Pte Ltd
25 Kallang Ave #03-03, Singapore 339416
Contact: 6341 7839

FAQs

How long will it take to receive my purchase?

Standard Shipping - 3 to 5 days
Express Shipping - 1 to 2 days

Can I opt for store pickup?

Yes, we are open daily for collection from 11 AM - 6.30 PM.
Address: 1 Ubi View #01-22, Focus One Building Singapore 408555 (Door located nearest to carpark exit gantry) We will contact you once your order is ready for collection!

What is the difference between the RM61-312 and RM600?

SilverStone built the RM61-312 on the RM600 design. The bottom 2U of the front panel becomes 12 hot-swap drive trays with a Mini-SAS HD backplane. The RM600 has a perforated front there and 6 x 3.5" internal bays instead.

Does the RM61-312 come with rack rails?

SilverStone lists the RMS09-20 sliding rail as compatible with the RM61-312. Rack rails are not confirmed as included. Please contact Mansa Computers to confirm availability before ordering.


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