HAC
High Availability Cluster
HACCP
Hazard Analysis Critical Control Points
HACMP
High Availability Cluster Management Protocol
HACMP
High Availability Cluster Multi-Processing (IBM)
ACID
Atomicity, Consistency, Isolation, Durability
HCLP
Hierarchical Constraint Logic Programming
HCN
Hierarchical Cache Network
HCVQ
Hierarchical Classified Vector Quantization