High availability software - HA cluster for redundancy of critical applications on Windows and Linux
Evidian SafeKit
30 seconds elevator pitch for SafeKit
- Sam is in charge of critical applications
- Critical applications are not available anymore!
All-in-one high availability
In one software product, SafeKit provides on Windows and Linux:
- load balancing
- synchronous real-time file replication
- automatic application failover
- automatic failback after a server failure
Save costs of network load balancers or dedicated proxy servers, shared disk or replicated SAN storage, enterprise editions of Operating Systems and databases, specific skills to maintain operational a cluster.
A complete solution
SafeKit solves:
- hardware failures (20% of problems), including the complete failure of a computer room,
- software failures (40% of problems), including restart of critical processes,
- and human errors (40% of problems) thanks to its ease of use and its web console.
A generic product
You can apply this generic product to your applications, databases, full Hyper-V or KVM virtual machines, Docker, Kubernetes, Cloud applications.
Zero specific skills
No special computer skills are required to deploy a SafeKit high availability cluster.
Zero hardware extra costs
Forget about shared disks, replicated SAN storage... SafeKit is hardware independent and runs on your existing physical servers, or in virtual machines, or in the cloud.
Zero software extra costs
SafeKit works with the standard editions of Windows and Linux and does not require enterprise editions of databases.
Redundancy at the application level
In this type of solution, only application data are replicated. And only the application is restared in case of failure.
With this solution, restart scripts must be written to restart the application.
We deliver application modules to implement redundancy at the application level. They are preconfigured for well known applications and databases. You can customize them with your own services, data to replicate, application checkers. And you can combine application modules to build advanced multi-level architectures.
This solution is platform agnostic and works with applications inside physical machines, virtual machines, in the Cloud. Any hypervisor is supported (VMware, Hyper-V...).
Redundancy at the virtual machine level
In this type of solution, the full Virtual Machine (VM) is replicated (Application + OS). And the full VM is restarted in case of failure.
The advantage is that there is no restart scripts to write per application and no virtual IP address to define. If you do not know how the application works, this is the best solution.
This solution works with Windows/Hyper-V and Linux/KVM but not with VMware. This is an active/active solution with several virtual machines replicated and restarted between two nodes.
- Solution for a new application (no restart script to write): Windows/Hyper-V, Linux/KVM
Partners, the success with SafeKit
This platform agnostic solution is ideal for a partner reselling a critical application and who wants to provide a redundancy and high availability option easy to deploy to many customers.
With many references in many countries won by partners, SafeKit has proven to be the easiest solution to implement for redundancy and high availability of building management, video management, access control, SCADA software...
Building Management Software (BMS)
Video Management Software (VMS)
Electronic Access Control Software (EACS)
SCADA Software (Industry)
Network load balancing and failover |
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Windows farm | Linux farm |
Generic Windows farm > | Generic Linux farm > |
Microsoft IIS > | - |
NGINX > | |
Apache > | |
Amazon AWS farm > | |
Microsoft Azure farm > | |
Google GCP farm > | |
Other cloud > |
Advanced clustering architectures
Several modules can be deployed on the same cluster. Thus, advanced clustering architectures can be implemented:
- the farm+mirror cluster built by deploying a farm module and a mirror module on the same cluster,
- the active/active cluster with replication built by deploying several mirror modules on 2 servers,
- the Hyper-V cluster or KVM cluster with real-time replication and failover of full virtual machines between 2 active hypervisors,
- the N-1 cluster built by deploying N mirror modules on N+1 servers.
Evidian SafeKit mirror cluster with real-time file replication and failover |
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3 products in 1 More info > |
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Very simple configuration More info > |
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Synchronous replication More info > |
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Fully automated failback More info > |
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Replication of any type of data More info > |
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File replication vs disk replication More info > |
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File replication vs shared disk More info > |
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Remote sites and virtual IP address More info > |
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Quorum and split brain More info > |
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Active/active cluster More info > |
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Uniform high availability solution More info > |
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RTO / RPO More info > |
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Evidian SafeKit farm cluster with load balancing and failover |
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No load balancer or dedicated proxy servers or special multicast Ethernet address |
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All clustering features |
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Remote sites and virtual IP address |
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Uniform high availability solution |
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Software clustering vs hardware clustering
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Shared nothing vs a shared disk cluster |
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Application High Availability vs Full Virtual Machine High Availability
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High availability vs fault tolerance
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Synchronous replication vs asynchronous replication
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Byte-level file replication vs block-level disk replication
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Heartbeat, failover and quorum to avoid 2 master nodes
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Virtual IP address primary/secondary, network load balancing, failover
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User's Guide
Application Modules
Release Notes
Presales documentation
Introduction
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- Features
- Architectures
- Distinctive advantages
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- Hardware vs software cluster
- Synchronous vs asynchronous replication
- File vs disk replication
- High availability vs fault tolerance
- Hardware vs software load balancing
- Virtual machine vs application HA
Installation, Console, CLI
- Install and setup / pptx
- Package installation
- Nodes setup
- Cluster configuration
- Upgrade
- Web console / pptx
- Cluster configuration
- Configuration tab
- Control tab
- Monitor tab
- Advanced Configuration tab
- Command line / pptx
- Silent installation
- Cluster administration
- Module administration
- Command line interface
Advanced configuration
- Mirror module / pptx
- userconfig.xml + restart scripts
- Heartbeat (<hearbeat>)
- Virtual IP address (<vip>)
- Real-time file replication (<rfs>)
- Farm module / pptx
- userconfig.xml + restart scripts
- Farm configuration (<farm>)
- Virtual IP address (<vip>)
- Checkers / pptx
- Failover machine (<failover>)
- Process monitoring (<errd>)
- Network and duplicate IP checkers
- Custom checker (<custom>)
- Split brain checker (<splitbrain>)
- TCP, ping, module checkers
Support
- Support tools / pptx
- Analyze snapshots
- Evidian support / pptx
- Get permanent license key
- Register on support.evidian.com
- Call desk