VME Expansion

VME Expansion on Origin and Onyx 2

To add VME capability to Origin 3000, Origin 2000, Onyx 3000, or Onyx2, you must add two components:

To add VME to an Origin 200, you must also add a GIGAchannel.

The XIO to VME Adapter is available from SGI. Elma Electronic offers a choice of three VME chassis manufactured to SGI specifications. Customers must purchase a chassis directly from Elma Electronic.

XIO to VME Adapter

The XIO to VME adapter consists of two boards and two interconnecting cables:

  • XIO interface board
  • VME interface board (6U or 9U)
  • NUMAlinkTM cable (3m)
  • Ground cable

The XIO interface board plugs into any XIO slot, and the VME interface board plugs into a slot in the VME chassis. There are two variations of the XIO to VME adapter:

  • XT-VME-6U - includes 6U VME board
  • XT-VME-9U - includes 9U VME board

Electrically, the two adapters are identical. The only difference between the two is the form factor of the VME board that is included.

The NUMAlinkTM cable plugs directly into the XIO board on one end and into the VME board on the other end. There are no bulkheads which would require additional connectors.

The ground cable interconnects the ground lugs provided on the VME chassis from Elma Electronic and the Origin or Onyx2 chassis. This cable must be connected to ensure proper operation.

VME Chassis from Elma Electronic

Elma Electronic has developed three VME chassis that meet SGI specifications for grounding and EMI. Customers should purchase chassis directly from Elma. Contact Shan Morgan at Elma for a quote. Shan can be reached at: (P) 510-656-3400 (F) 510-656-3783 (E) shanm@elma.com.

SGI guarantees correct VME-64 bus operation on an Origin or Onyx2 system that is properly configured with an XIO to VME Adapter and any of these three approved chassis from Elma Electronic.

The configurations of the three chassis and their ordering codes are as follows:

SGI-VME6U5
5-slot, 6U VME Chassis

  • Accommodates (5) 6Ux160mm boards
  • 250W power supply
  • Front panel power switch
  • 19" rackmount chassis with front handles
  • Rear board access
  • Flush mount boards
  • Front-to-rear cooling
  • 7.00"H x 17.00"W x 15.78"D.

SGI-VME6U21
21-slot, 6U VME Chassis

  • Accommodates (21) 6Ux160mm boards
  • 750W power supply
  • Front panel power switch
  • 19" rackmount chassis with front handles
  • Rear board access
  • Flush mount boards
  • Front-to-rear cooling
  • 15.75"H x 17.00"W x 15.78"D

SGI-VME9U5
5-slot, 9U VME Chassis

  • Accommodates (5) 9Ux400mm boards
  • 350W power supply
  • Front panel power switch
  • 19" rackmount chassis with front handles
  • Rear board access
  • Flush mount boards
  • Side-to-side cooling
  • 7.00"H x 17.00"W x 24.00"D

Notes:

  • The XIO to VME Adapter requires one slot in each VME chassis

Mounting the VME Chassis

Each of the three VME chassis can be mounted in any customer-supplied 19" rack. The Origin 2000 and Onyx2 rackmount systems were not designed to accommodate a VME chassis.