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Double-Take
New version 4.3 click to see the updated feature list

Disasters happen. Data loss doesn't have to.

From a simple power failure to a record flood or raging fire, disasters stop your business and halt the flow of information. Forrester Research estimates that companies with annual revenues of at least US$1 million from online business lose more than US$8,000 per hour during a systems outage. With the cost of doing business so high, how long can you afford to be down?

 

Too few businesses realise the importance of protecting their data
. . . until disaster strikes.

Data is a company's most important asset. Whatever compromises the security of your mission-critical data compromises the future of your business. The stakes are high in data availability and recovery. Every day, your marketplace becomes a little more challenging, a bit more demanding.

AMT Software deliver solutions from NSI Software, unique, real-time solutions for data protection. Every day, every hour, every second, our products help thousands of companies compete globally without fear of data loss or downtime.

From a simple power failure to a record flood or raging fire, disasters stop your business and halt the flow of information. Forrester Research estimates that companies with annual revenues of at least US$1 million from online business lose more than US$8,000 per hour during a systems outage. With the cost of doing business so high, how long can you afford to be down?

 

No company is disaster proof, but your data can be.

Double Take works with nearly every mainstream application. It is a real-time data replication and failover software product. Double-Take augments your existing data protection strategy by reducing downtime and data loss, and it provides these services with minimal impact on existing network and communication resources.

Disk crashes. Power failures. Raging fires. Devastating floods. Regardless of form or fury, disasters can take their toll on any business and stop the flow of information. With each minute of lost data translating into unrecoverable revenues, downtime is being taken seriously.

And that's why thousands of companies that want to compete globally without fear of data loss or downtime are doing a Double-Take. Patented by NSI Software, Double-Take enables companies to recover quickly and easily from disasters and continue to provide business-critical information. For companies concerned with data availability and protection, Double-Take provides a huge, cost-effective, competitive advantage.

Innovative technology
Double-Take uses patented technologies to monitor changes continuously to open files as they occur. Only these byte-level changes are replicated to one or more servers over standard network connections. Data is always protected, and an up-to-date copy is available in an off-site location.

STAR is Double-Take's patented "Sequential Transfer-Asynchronous Replication" technology, and the key to unmatched performance and reliability.

  • Sequential Transfer-Replication follows the same write sequence within and across multiple files, providing complete data integrity at all times.

  • Asynchronous Replication -A combination of source- and target - based on queuing capabilities allows the server to continue processing while replication occurs and allows for maximum performance.

Reduced downtime and improved data protection
NSI Software provides seamless configuration, control and administration of data availability and protection. Replication occurs continuously over any shared or private IP-based LAN, WAN, or SAN connection. In the event of a disaster, Double-Take's failover capabilities allow a secondary server to stand in automatically for the primary server. Operations resume with minimal interruption and confusion. Most system users are unaware when a failover occurs.

Unlike tape backups, which run periodically to provide a archival data at the expense of hours or days for retrieval, Double-Take continuously captures the most recent data and makes it immediately available. It allows complete redundancy of the data, storage, and servers. Double-Take requires only standard TCP/IP connectivity, so complete replication can be maintained in real time, without any geographic limitations. It can even protect companies against site-level failures.

 

Multi-platform advantages
Double-Take is the only multi-platform data replication software that supports Windows 2000/NT and 2003 operating systems. It goes beyond a company's need for server failover and adds data replication, backup, and data-distribution capabilities, simply and easily.

All Double-Take products are derived from a common, cross-platform code base and use industry standard protocols, such as IP and SNMP. Double-Take's management tools deliver central management and monitoring, and the simple functions reduce the effort needed to support multi-platform environments.

 

Best possible protection at the lowest cost
According to storage industry analyst Strategic Research Corporation, Double-Take can provide up to 99.99% system availability, or less than 50 minutes of downtime per year. That's quite impressive, since most large, online businesses average one to five hours of downtime every month, according to Forrester Research, and lose US$8,000 or more per hour.

In addition, Double-Take's real-time data replication uses the smallest amount of network bandwidth possible. While other technologies may need to transmit an entire disk block or whole file, Double-Take only transmits byte-level changes.

 

Features and Benefits

High Availability
Windows Server 2000 and 2003
Virtually any application, including Exchange, SQL Server, and Oracle

Disaster Recovery
Off-site/cross-site
Long distance, WAN speeds
Shared bandwidth Backup Enhancement
Use existing back up software
Solves zero backup window
Serverless, open-file backup
Centralized and continuous

Web Content Replication
Distributed intranet servers
Web servers in IP-balanced server farm

Data Distribution
One-to-many-to-many “fan out”
Hundreds to thousands of servers

Platform Migration
Mirror live data to new OS version, server, or storage hardware
Consolidation or relocation
Fast failover/switch over Change Management
Test changes on target server
Software upgrades
Hardware upgrades

Platform Support
Double-Take is licensed per machine and is available for the following operating systems and platforms:

Windows 2003/2000/NT Supports
Windows NT 4.0 Workstation, Server, Enterprise Edition and Terminal Server Edition and Windows 2000 Professional, Server and Advanced Server

Windows 2003/2000 DataCenter
Supports Windows NT 2000 DataCenter*

 

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