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Z Series

IBM Maintenance Qualified Pre-owned Z Series Equipment

SOS has access to the largest independent inventory of mainframeholdkey.jpg
hardware in the world and a strong inventory of distributed processors as well. In addition to whole systems, we can supply a large inventory of parts, features, add-ons or upgrades.
Our hardware is fully refurbished by a trained technical staff and is later checked, banded and certified by the manufacturer - guaranteed eligible for the manufacturer's maintenance.

If you're planning to buy a processor, call us. If you need a part or a feature, call us. If you think a part or feature is no longer available anywhere, call us. If you're concerned about support for a particular piece of hardware, call us.

We have a large inventory of processors and the expertise to help you understand what is the best value for your current and future data center needs. SOS does not sell new hardware and is not an IBM business partner or a partner to any other manufacturer. We remain that way so we can offer an objective opinion rather than the manufacturers way they want you to purchase. This let us offer more cost effective smarter solutions that are good for you and your needs.


IBM Z114 Mainframe

IBM Z10 ECOld School

IBM Used zSeries Z10



 IBM Z990

An economical option for your mainframe computing needs.
IBM Certified Used Equipment is a cost-effective alternative to new when matching, upgrading or adding to your present IT portfolio.


  • Refurbished IT equipment can help grow your IT portfolio faster than your budget.
  • Get late-model used systems with great specifications and performance, at a fraction of the cost of their original price.
  • Every system is completely refurbished and tested to IBM specifications and is custom configured to your exact requirements by trained experts.
  • Satisfaction guaranteed - SOS guarantees your previously owned machine will qualify for the manuafacturers maintenance coverage.
  • Custom configurations are available by contacting SOS at 480-951-3878