RS258 Rugged 2U Servers

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 RS258. High-end computing performance in a 2U chassis with a depth of 20” (50.8 cm) fits most any rack space.


  • 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 twelve (12) 2.5″ SSDs
  • Expandable with five (5) low profile slots
  • Leading edge Intel® Ivy Bridge, Haswell or Broadwell CPU options


Environmental Standards
MIL-STD-810, Operational Temperature, Method 501/502 Procedure I/II

-15°C to +50°C, -40°C to +71°C with select processors²

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

-55°C to +85°C²

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

240 hours with humidity kit²

with humidity kit² MIL-STD-810, Altitude, Method 500

12,500ft operation, 40,000ft transport²

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

4.63 GRMS, 5-2,000Hz, 60 min/axis with solid state drives + vibration kits²

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

20g, 11msec–functional shock; 40g, 11msec crash hazard shock²

MIL-S-901, Grade B²
MIL-S-901, Grade A

With solid state drives + shock kits²

Electromagnetic Compatibility Standards
Some standards may require an internal kit
AC, FCC Compliant²
AC, MIL-STD-461, RE102, CE102 compliant²
DC, MIL-STD-461, RE102, CE102 compliant²
RTCA DO-160 Section 21, Category M²
Form Factor
3.5" (8.89cm)
17.5" (44.45cm) [accepts Crystal Slides and Jonathan Rails] 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; Up to 18 core options per socket (dependent on motherboard)
Option 1

Haswell or Broadwell LGA2011, X10DRL-I

Option 2

Ivy Bridge LGA1155, X9SAE-V, 2 and 4 core i3/i5/i7/e3 CPU options

Expansion Slots
One (1) PCIe 3.0 x16 slot, four (4) PCIe x8 slots
External Bays
Option 1

Two (2), four (4), six (6) or eight (8) 2.5” SSD up to 15mm

Option 2

Three (3), six (6), nine (9), or twelve (12) 2.5” SSD up to 9.5mm

Option 3

(can be combined with HDD option): One (1) CD/DVD/BD (R/W)

16 GB - 512 GB DDR3 or DDR4

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

Redundant, Ruggedized, EMI Compliant, Fixed Mount Power Supplies
Option 1

460WAC + 460WAC, 120-240V 50-60Hz, 115V 400Hz

Option 2

505WDC + 505WDC, 18-36V (other ranges available)

Option 3

460WAC + 505WDC

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

X10DRL-I, Dual LGA2011 R3 Xeon®, ATX, 2LAN1000, VGA, 5 PCI-E X8, 1 PCI-E X16, 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 for your product.