How Double-Take Works
A small software module is installed on each source and target server. An easy-to-use client application lets you define which data will be replicated and where the copies will be stored. The initial mirroring operation can be performed while the source servers are active. After this simple configuration and initial mirroring are completed, operations are automatic and transparent.

The failover module resides on the target server, and continually monitors the source servers. In the event of a server failure the target server can assume the names and IP adresses of the failed servers (in addition to its original name), and invoke scripts to restart applications.

 

Improved Data Protection
Double-Take protects data in real-time, reducing your exposure to data loss from a full day's data to seconds or less.

 

Disaster Recovery Protection
Up-to-the-minute offsite protection is an important part of a your business continuity strategy. Double-Take works efficiently over slower WAN links.

 

Reduced Downtime
Failover is fast and automatic. Your exposure to downtime is reduced or eliminated.

 

Enhanced Data Compression
Three levels of compression introduced in Version 4.4 allow more data to be replicated and increase performance and scalability.

 

Cross-Platform Data Interchange
Data can be mirrored and replicated between your Double-Take machines running on different OS platforms (NT/W2K).

 

Enhances Backup Performance
By giving your existing third-party backup system access to open files, Double-Take improves backup reliability. In addition, the option of centralizing backup operations on the target server simplifies management, improves performance, and reduces cost of ownership.

 

Select the amount of bandwidth you want to use
Double-Take for NT allows you to select the amount of bandwidth you would like to dedicate to replication. If you have a 128K link you can limit replication to a maximum of 64K reserving the remainder for standard network traffic.