Exhibit 21.1

GlassHouse Technologies, Inc.

List of Subsidiaries

Name of Wholly-Owned Subsidiary	Jurisdiction of Organization
GlassHouse Technologies (UK) Limited	United Kingdom
Systems Group Integration Limited (Indirect Subsidiary)	United Kingdom
The Storage Group, Inc.	California
Converged Securities Services Group, Inc.	Delaware
GlassHouse Information Systems Ltd.	Turkey
GlassHouse Technologies Ltd.	Israel
GlassHouse Technologies AG	Switzerland
vcare Infosystems GmbH (Indirect Subsidiary)	Germany