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1776® Fault-Freedom™ II
How it works ~ Quick Summary
With server mirroring, one of more standard networks connect two servers. This makes possible:
- Protection against server hardware failure through system failover (automatic of voluntary) - If one of the servers fails, the other server knows within a few seconds and can take over automatically or through an administrator command.
- Software crash prevention through "Process Monitoring" (optional module) - If a critical process such as a database engine fail crashes or is killed accidentally, process monitoring will attempt to restart it automatically.
- Protection against loss of current data through real-time data replication - A mirror-image copy of all important data including current transactions is maintained on both systems.
- Protection against site disasters through physical separation of the servers - As long as a standard TCP/IP network connect the two systems, they can be placed at far ends of a building, or in different buildings.
- Protection against failure or damage to storage subsystem through storage subsystem redundancy - With server mirroring, if a component o the storage subsystem fails, the backup subsystem attached to the other server takes over automatically.
The other benefits are made possible by Fault-Freedom's unique patentable resynchronization technology:
- On-line system maintenance: Operate one system without the other whenever desired -You can turn off one system, repair it, and turn it on again later, and it will be fully resynchronized with the other system in only seconds or minutes.
- On-line tape backup: Run a tape backup on the standby system while the primary system functions - Turn off mirroring and make a tape backup using the mirror copy of data, then resynchronize the mirror copy in seconds or minutes.
- Disaster recovery for major site disasters: Geographic separation of servers - Servers can be located in different cities connected by a wide area network. If the WAN goes down for a while, Fault-Freedom will automatically resynchronize the servers in seconds when the WAN comes up again.
OTHER UNIQUE FEATURES
- Fast failover - Minimizes downtime between when one system fails and the other system takes over.
- Minimizes unprotected time through "fast resynchronization" - Minimizes period of vulnerability.
- Optional "point-in-time" mirroring - Protects data that could be corrupted by users or software bugs.
- Protects against network failure - Eliminates another threat to uptime: network failure.
- Load-sharing; bi-directional mirroring and failover - Each system runs a critical application.
SIMPLIFIED INSTALLATION AND OPERATION
- Works with almost any o.s.-compatable hardware - Use existing systems; buy from your preferred vendors.
- Unique IP address switching - Makes set up easier; ensures compatibility with existing network equipment.
- Automatic script generation - Simplifies installation and level of knowledge needed for installation; yet provides complete flexibility for special cases.
- Graphical guided installation - Makes installation faster and eliminates errors.
- Technician-friendly status and control display - Graphical status and control display with intuitive symbols and color-coding allow system maintenance by technicians without extensive experience with Fault-Freedom.
- Character and command-line interfaces - Allow remote access from support center, VAR or remote terminals, for ease of maintenance and administration.
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