Druva inSync is specifically designed keeping in mind the remote or mobile users. The product incorporates key features to deliver unmatched performance and security while backing up over VPN or WAN

Unlike most other backup offerings, inSync uses client triggered backups. The backup and restore requests are always initiated by the client over a SSL secure channel. This aids in security and scalability of the server. The administrator just needs to open one-way secure port for the inSync server and can securely backup remote users over VPN or WAN.
Druva inSync uses source based data deduplication to save "only a single copy" of content duplicated across users. This delivers up to 10 times faster backup with 90% reduction in bandwidth and storage.
Druva inSync client automatically detects changes in the network to calculate network latency and available bandwidth. The client then prioritizes bandwidth based on a percentage limit set by the user and chooses optimal packet size to make the best use of the network availability.
Client-triggered backup architecture and strong 256 bit network and storage encryption makes Druva inSync the most secure backup solution available.

Suggested Reading
Documents: Whitepaper - Laptop Backup for Remote Workforce
Knowledge base: Backup Remote users over WAN/VPN
Blog: Remote Laptop Backup a Problem for Enterprises : Case Study
