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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SIOS LifeKeeper
SIOS LifeKeeper for Windows is a comprehensive high-availability and disaster‑recovery solution that integrates failover clustering, continuous application monitoring, data replication, and flexible recovery policies to deliver 99.99 % uptime for Microsoft Windows Server environments—whether physical, virtual, cloud, hybrid‑cloud, or multicloud. Administrators can build SAN‑based or SANless clusters using a variety of storage types (direct‑attached SCSI, iSCSI, Fibre Channel, or local disk) and choose between local or remote standby servers that support both high availability and disaster recovery. LifeKeeper offers real‑time block‑level replication via bundled DataKeeper, with WAN‑optimized performance that includes nine levels of compression, bandwidth throttling, and integrated WAN acceleration, ensuring efficient replication across cloud regions or over WAN without hardware accelerators.
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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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Phillux
Phillux is a virtualization platform for your own servers. It manages virtual machines and LXC containers along with storage, images, virtual networks, snapshots, clones, backups and a per-guest firewall - from a single host up to a small cluster with shared OCFS2 storage and live migration of running VMs.
Windows 11 guests get UEFI, Secure Boot and a virtual TPM 2.0 automatically and install unattended. Linux guests boot from ready cloud images via cloud-init. Existing guests import from VMware ESXi or Proxmox.
The firewall attaches to each guest's network device, not the host, so a wrong rule can never lock you out. A ransomware brake watches writes beneath the guest and pauses a machine when data turns to noise - halted, not killed, so the step is reversible and the encryption key stays in frozen memory.
Every function is a documented REST endpoint. Runs on Debian 13, licensed per CPU socket. Your data stays on your hardware: no cloud, no telemetry.
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