RS235 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 RS235. High-end computing performance in a 2U chassis with a depth of 20” (50.8 cm) fits most any rack space.


RS235 Rugged 2U Server

• Light weight aluminum construction– 30 to 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” SSDs
• Expandable with three (3) low profile slots
• Leading edge Intel® Sandy Bridge, Ivy Bridge, Haswell or Broadwell CPU options


Environmental Standards
MIL-STD-810, Operational Temperature, Method 501/502 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) EIA-310 Rack Compliant
20" (50.8cm)
30 - 35 lbs ( 13.61 - 15.88 kgs ) (content dependent)
Intel® CPU architecture options from Intel embedded long-life roadmap
Option 1

Sandy Bridge or Ivy Bridge LGA1155, X9SAE-V

Option 2

Haswell or Broadwell LGA2011, X10SRL-F

Up to 18 cores options per socket

Expansion Slots
One (1) PCIe 2.0 X16 (X8 signals) slot, two (2) PCIe 2.0 X8 slot
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 HDD

Option 3 (can be combined with HDD option)

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

16 GB - 512 GB DDR3 or 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 X9SAE-V

460W 120/240VAC W/PFC, 115VAC 400Hz

Option 2 X9SAE-V

425W 18-36VDC

Option 3 X10SRL-F

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

Option 4 X10SRL-F

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

Option 5 X10SRL-F

585W 18-36VDC

System Board
Option 1

X9SAE-V, Single LGA1155, Xeon® & i3/5/7, ATX, 2LAN1000, VGA, 2XHDMI,
AUDIO, 1 PCI, 2 PCI-E X1, 1 PCI-E X4, 1 PCI-E X8, 2 PCI-E X16, SATAX4, SATA3X2

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®, VMware®, Linux® or Windows Server 2016®
Export Compliance
ECCN: 5A992 Classification is dependent on configuration and is subject to change. Please contact your Business Development Manager to receive the classification of your product.


Reports, Guides & Drawings

RS235 2U Rugged Server - Outline Installation Drawing
TST-00077 RS235 July 2009 Nehalem Thermal Test Report Summary
RS235 x8 Hardware Guide
RS235 X9 Hardware Guide
TST-00101 RS235 Feb 2013 Crash Safety (Impulse) Shock Test Report
TST-00102 RS235 Feb 2013 Crash Safety (Sustained) Shock Test Report
TST-000161 RS235 July 2014 EMC Test Report
RS235 2U Rugged Server - X10 Outline Installation Drawing