Liebert Case Study - Greater Harris County 9-1-1


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Greater Harris County 9-1-1

There is no margin of error in 9-1-1 communications. That’s why the Greater Harris County 9-1-1 Emergency Network (GHC 9-1-1), selected a dual- redundant power system for the new Houston Emergency Center (HEC). The data center power system can support continuous operation for approximately four hours on UPS battery, despite the presence of two independent power feeds and three backup generators. The HEC is the facility that receives and dispatches all emergency calls for the citizens of Houston.

Case Summary

Location: Houston, Texas

Dual-redundant Liebert Series 600 Uninterruptible Power with Liebert Static Transfer Switches; Redundant Liebert GXT UPSs in Liebert Foundation MCRs for remote communications centers; Liebert SiteScan monitoring

Critical Needs
Deliver uninterrupted power availability and data center monitoring to county-wide 9-1-1 communications network.


  • Uninterrupted access to emergency communication systems
  • Fast replacement of flood-damaged equipment through local support
  • Visibility into remote systems eliminated unnecessary service calls
  •  To read more,  download the Greater Harris County 9-1-1 case study

Greater Harris County 9-1-1 (GHC 9-1-1) is the largest 9-1-1 system in Texas and the second largest in the United States. GHC 9-1-1 provides 9-1-1 service for the approximately 3.9 million residents in Harris and Fort Bend Counties, and the 48 cities, including Houston, within those counties. There are approximately 8,000 to 10,000 9-1-1 calls daily within the GHC 9-1-1 territory.

“Overall we felt [Liebert] was the best designed product. The MTBF rates are exceptional and we are very pleased with their communications capabilities…It was clearly the right choice for an application as important as this one.”
Dan Darnell, systems administrator,
Greater Harris County 9-1-1