Defense and Homeland Security (HLS)

Spartan Rugged Servers

Spartan offers a vast range of rugged equipment, including servers, storage solutions, switches, displays, personal digital assistants (PDAs), wearable computing devices, recording systems, embedded computers, NEBS-3 servers, networking equipment, firewalls, low-power Single Board Computers (SBCs) and architectures and related integration services for mission critical applications meeting the MIL-STD requirements.

We design, manufacture, integrate and support rugged computer-based systems for airborne applications, as well as naval, land, automotive, intelligence, communications, navigation, surveillance and critical control applications.

Typically a military computer enclosure is much more robust than that of an industrial one. There will be more structure inside to support the components ─ the plug-in cards are individually supported and secured to assure they wouldn’t pop out of their sockets, the processor and heat sink are secured, memory components are glued into their sockets, and so forth. That is to assure that nothing moves in an event of shock.

Military computers differ from typical office or consumer computers in several parameters:

  • Cost
  • Intended environment
  • Long term availability
  • Architecture
  • Feature set

Cost – Military computers are generally much more expensive than office or consumer computers. Military programs might require fewer systems but of higher costs. The higher cost is partly due to the fact that military computers are constructed with stronger materials, more internal structures, more cooling fans, stronger power supply, and so forth

Intended Environment – An office or consumer computer is intended for use in a very controlled, shirt-sleeve environment, with moderate temperatures and humidity and minimal dust. Spartan computers are different. They can be designed to operate in very adverse environments of extreme temperatures such as -20C to +60C, extreme humidity levels (5% to 95%) and high dust load in the air, and also withstand other sorts of challenges for the hardware. They may be required to operate in high-salt environments such as ships, or designed to withstand shock and vibrations on a naval ship or submarine. Military computers might be designated for installation on aircrafts, in which case they need to be crashworthy and able to operate at high altitudes if located on an unpressurized aircraft. A specific computer might be required to operate in diverse tasks and environments as in Afghanistan and Alaska, with the same features of design.


Long Term Availability – Military programs are measures in years, and replacements of hardware components by identical ones might be required over that period of time. Consumer computers are often equipped on a seasonal basis with the latest components available in the market in order to get the highest possible performances, such as those required for gaming. For instance, the motherboard in a consumer grade computer might have an availability measured in months ─ instead of years or decades. Over a lifetime of a consumer level computer model, it is not unlikely to have all its components ─ such as the motherboard, drives, BIOS, video board, etc. ─ altered in the successive seasonally modified models. That is not acceptable in a military computer, for which supporting systems has been tested and approved.

Architecture – Spartan offers rugged servers and standard off-the-shelf computing architectures that are designed to meet MIL- SPEC.

Feature Set – Spartan computers have some features that cannot be found on a consumer grade computer. Such are the Circular connectors, hot swap power supplies, hot swap fans, and custom front panel features such as the LCD displays.

Spartan features:

  • Sealed Server, protected from dust and rain
  • Small footprint
  • Designed to meet extreme temperature range and mobile vehicle shock and vibrations
  • Ideal for remote installations and for deployment of cloud-based operations

The defense and segments have many numerical designations for computers or other equipment, to guide the military buyers’ choice of appropriate technology for their application. For instance, MIL-S-901D indicates that the computer passed shock and vibration requirements of specific tests for Navy installations. More common requirements are the MIL-STD-810 for environmental testing, such as storage and operating temperature, humidity, salt spray, dirt, etc. Another common specification is MIL-STD-461 for electromagnetic compatibility. There are specifications for workmanship, wiring, packaging, and so forth that military computers are required to meet.

Environmental Standards and the respective features of Spartan products

Environmental standards 2U sealed server 2U air cooled server 3U storage server Video Encoder
Rain Blowing rain proof according to MIL-STD-810G (equivalent to IP65)  Splash water proof

according to MIL-STD-810G (equivalent to IP63/IP64)

Blowing rain proof according to MIL-STD-810G (equivalent to IP65)  Splash water proof

according to MIL-STD-810G (equivalent to IP67)

Sand and Dust According to MIL-STD-810G
Salt Fog According to MIL-STD-810G
Humidity Up to 95% Non-Condensing according to MIL-STD-810G
High Altitude According to MIL-STD-810G
Operating Temperature

(support cold start)

-20oC to +60oC
Non-Operating Temperature -40oC to +85oC
EMI / RFI According to MIL-STD-461E: CE102, CS101, CS106, CS114, CS115, CS116, RS103, RE102