Product : Citrix, Citrix Hypervisor/8, Premium
Feature : Live VM Snapshot, Updates and Backup, Management
Content Owner:  Roman Macek
Summary
Yes
Details
You can take regular snapshots, application consistent point-in-time snapshots (requires Microsoft VSS) and snapshots with memory of a running or suspended VM. All snapshot activities (take/delete/revert) can be done while VM is online.