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Virtual appliances are provided to the user or customer as files, via either electronic downloads or physical distribution. The file format most commonly used is the Open Virtualization Format (OVF). It may also be distributed as Open Virtual Appliance (OVA), the .ova file format is interchangeable with .ovf.
Open Virtualization Format (OVF) is an open standard for packaging and distributing virtual appliances or, more generally, software to be run in virtual machines.. The standard describes an "open, secure, portable, efficient and extensible format for the packaging and distribution of software to be run in virtual machines".
Virtual appliances distributed as virtual machine types such as: Open Virtualization Format (OVA) - As of v14.0 was the default VM format. It supports VirtualBox and most VMware products (e.g. Workstation, Player, Fusion and vSphere/ESX). Also includes open-vmtools (for VMware).
vCenter Server Appliance (VCSA) is the centralized management utility for VMware, and is used to manage virtual machines, multiple ESXi hosts, and all dependent components from a single centralized location. VMware vMotion and svMotion require the use of vCenter and ESXi hosts.
A new VM storage scheme where all VM data is stored in one single folder to improve VM portability; Several UI enhancements including a new look with VM preview and scale mode; On 32-bit hosts, VMs can each use more than 1.5 GB of RAM; In addition to OVF, the single file OVA format is supported; CPU use and I/O bandwidth can be limited per VM
VMware VMFS (Virtual Machine File System) is VMware, Inc.'s clustered file system used by the company's flagship server virtualization suite, vSphere. It was developed to store virtual machine disk images, including snapshots. Multiple servers can read/write the same filesystem simultaneously while individual virtual machine files are locked.
The core product families are vSphere, vSAN and NSX for on-premises virtualization. [1] VMware Cloud Foundation (VCF) is an infrastructure platform for hybrid cloud management. [1] The VMware Infrastructure suite is designed to span a large range of deployment types to provide maximum flexibility and scalability.
Other innovations include a register-based virtual machine, to better match the underlying hardware, rather than a stack-based virtual machine, which is a closer match for the programming language; in 1995, this was pioneered by the Dis virtual machine for the Limbo language.