NEC EXPRESSCLUSTER
NEC EXPRESSCLUSTER is a high-availability software solution designed to maximize business continuity and disaster recovery while preventing data loss. It supports recovery from hardware, network, and application failures without requiring costly shared storage disks. The software boasts a proven track record with over 17,000 customers worldwide and more than 30,000 cluster systems deployed over 20 years. EXPRESSCLUSTER supports various applications, including major databases like Microsoft SQL Server and Oracle DB, email servers, ERP systems, virtualization platforms, and cloud services such as AWS and Microsoft Azure. Key features include automatic failover, real-time data mirroring, and comprehensive failure detection across system resources. NEC’s software helps businesses reduce downtime, save costs, and ensure reliable IT operations across many industries globally.
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DxEnterprise
DxEnterprise is multi-platform Smart Availability software built on patented technology for Windows Server, Linux and Docker. It can be used to manage a variety of workloads at the instance level—as well as Docker containers. DxEnterprise (DxE) is particularly optimized for native or containerized Microsoft SQL Server deployments on any platform. It is also adept at management of Oracle on Windows. In addition to Windows file shares and services, DxE supports any Docker container on Windows or Linux, including Oracle, MySQL, PostgreSQL, MariaDB, MongoDB, and other relational database management systems. It also supports cloud-native SQL Server availability groups (AGs) in containers, including support for Kubernetes clusters, across mixed environments and any type of infrastructure. DxE integrates seamlessly with Azure shared disks, enabling optimal high availability for clustered SQL Server instances in the cloud.
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Windows Server Failover Clustering
Failover Clustering in Windows Server (and Azure Local) enables a group of independent servers to work together to improve availability and scalability for clustered roles (formerly known as clustered applications and services). These nodes are interconnected via hardware and software, and if one node fails, another assumes its roles through an automated failover process. Clustered roles are actively monitored and, if they stop functioning, are restarted or migrated to maintain service continuity. The feature also supports Cluster Shared Volumes (CSVs), which provide a unified, distributed namespace and consistent shared storage access across nodes, reducing service disruptions. Typical uses include high‑availability file shares, SQL Server instances, and Hyper‑V virtual machines. Failover Clustering is supported on Windows Server 2016, 2019, 2022, and 2025, and in Azure Local environments.
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cloud-init
Cloud images are operating system templates and every instance starts out as an identical clone of every other instance. It is the user data that gives every cloud instance its personality and cloud-init is the tool that applies user data to your instances automatically. Including datasource and module references, and plenty of examples. While cloud-init started life in Ubuntu, it is now available for most major Linux and FreeBSD operating systems. For cloud image providers, then cloud-init handles many of the differences between cloud vendors automatically — for example, the official Ubuntu cloud images are identical across all public and private clouds.
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