RS255 Rugged 2U Workstation

Field tested, failsafe and long life performance in extreme conditions. As processing performance continues to improve, Crystal Group is dedicated to minimize the SWaP envelope of the RS255. High-end computing performance in a 2U chassis with a depth under 20” (50.8 cm) fits most any rack space.


RS255 Rugged 2U Server

• Light weight aluminum construction – 30-35 lbs.
• Easily mounted– Delrin glides, fixed mount, or Jonathan® rails
• Up to 512 GB of memory
• Rugged 2U, rack mounted 20” depth
• Versatility with five (5) removable 3.5” HDD or ten (10) removable 2.5” SSD bays
• Expandable with five (5) low profile slots
• Intel® Haswell or Broadwell CPU options


Environmental Standards
MIL-STD-810, Operational Temperature, Method 501, Procedure I/II

-15°C to +55°C, -40°C to +71°C with select processors

MIL-STD-810, Storage, Method 501, Procedure I/II

-55°C to +85°C

MIL-STD-810, Humidity, Method 507, Procedure II

240 hours with humidity kit

MIL-STD-810, Altitude, Method 500

12,500ft operation, 40,000ft transport

MIL-STD-810, Vibration, Method 514, Procedure I

4.63 GRMS, 5-2,000Hz, 60 min/axis with solid state drives and vibration kits

MIL-STD-810, Shock, Method 516, Procedures I/V

20g, 11msec—functional shock; 40g, 11msec crash hazard shock

MIL-S-901, Grade B
MIL-S-901, Grade A

With solid state drives + shock kits

Electromagnetic Compatibility Standards
Some standards may require an internal kit
AC, FCC compliant
AC, MIL-STD-461, RE102, CE102 compliant
DC, MIL-STD-461, RE102, CE102 compliant
RTCA DO-160 Section 21, Category M
Form Factor
3.5" (8.89cm)
17.5" (44.45cm) (accepts Crystal Slides and Jonathan rails) EIA-310 Compliant
20" (50.8cm)
30 - 35 lbs ( 13.61 - 15.88 kgs ) (content dependent)
Intel® CPU architecture options from Intel embedded long-life roadmap
Haswell or Broadwell LGA2011 R3, X10SRL-F or X10DRL-I

Up to 18 core options per socket (dependent on motherboard)

Expansion Slots
Five (5) low profile slots; combinations are configuration dependent
External Bays
Option 1

Five (5) removable SATA or SAS 2.5” or 3.5” HDD

Option 2

Ten (10) 2.5” SATA or SAS HDDs

Option 3 (can be combined with HDD option)

One (1) CD/DVD/BD (R/W)

16 GB - 512 GB DDR4 (motherboard dependent)

High Speed, High Volume Fans (6) CPU temperature controlled

Option 1

Mounted on Delrin glides

Option 2

Fixed mount, front and rear

Option 3

Jonathan rails

Power Supply
Option 1 X10SRL-F & X10DRL-I

600W 120/240VAC W/PFC, 115VAC 400Hz

Option 2 X10SRL-F & X10DRL-I

1200W 1+1 120/240VAC W/PFC, 115VAC 400Hz

Option 3 X10SRL-F & X10DRL-I

1005W 18-36VDC

System Board
Option 1

X10DRL-I, Dual LGA2011 R3 Xeon®, ATX, 2LAN1000, VGA, 5 PCI-E X8, 1 PCI-E X16, IPMI, IPKVM, SATA3X10

Option 2

X10SRL-F, Single LGA2011 R3 Xeon®, ATX, 2LAN1000, VGA, 2 PCI-E X16, 5 PCI-E X8, IPMI, IPKVM, SATA3X10

Software Compatibility
Accepts Windows 10®, Windows Server 2012®, VMware®, Linux® or Windows Server 2016®
Export Compliance
ECCN: 5A992 | Classification is dependent on configuration and is subject to change. Please contact your Program Manager to receive the classification of your product.

Reports, Guides & Drawings

RS255 2U Rugged Server - Outline Installation Drawing
TST-00164 RS255 & RS112 October 2009 Nehalem Vibe 7.18 G
TST-00123 RS255 April 2010 901D Shock Test Report
TST-00121 RS255 October 2009 Nehalem MIL-STD-461 Electromagnetic Compatibility Record
RS255 x8 Hardware Guide
RS255 X9 Hardware Guide
TST-00089 RS255 July 2013 Environmental Test Report
TST-00086 RS255 August 2013 Salt-Fog Test Report
TST-00155 Supermicro X9 November 2013 MIL-S-901D Grade A Shock Test Report
TST-00122 RS255 August 2013 MIL-STD-461 Electromagnetic Compatibility Record
TST-00083 RS255 October 2013 Humidity & Inclination Test Report
TST-00154 Supermicro X9 January 2014 MIL-S-901 Shock-Noise Test Report
RS255 2U Rugged Server - X10 Outline Installation Drawing