- Virtualbox Virtual Disk Image
- Virtualbox Virtual Disk Image File
- Virtualbox Hard Disk File Type
- Virtual Disk Image
- Virtualbox Disk Image Download
This let the disk images it in an higly uniform and highly compressible state, the unused data being physically removed from the image (replaced with 0s), which results in saving smaller disk image on the host machine - which allows to improve backup procedure's speed, and to more rationally use host disk space for storing more virtual machine. Home: Browse: Disk Image Files Disk Image Files. Disk image files contain an exact copy of a hard disk or other type of media. They include all the files, as well as the file system information. This allows disk images to be used for duplicating disks, CDs, and DVDs. They are often used for backup purposes as well. VirtualBox Virtual Disk Image File (.vdi) When opening the virtual disk image file, PowerISO will first list all partitions in the image file. You need select a partition from the list. PowerISO will list all files and folders in selected partition. If you're creating the Windows 10 VM image from a system that is in use, you're going to need more space for the VM image. If you have a new system, there won't be too many user files and the image will be smaller. You will need quite a bit of space on your hard drive or on an external drive to save the VM image.
When adding an image to Glance, you must specify what the virtualmachine image's disk format and container format are. Disk and containerformats are configurable on a per-deployment basis. This document intends toestablish a global convention for what specific values of disk_format andcontainer_format mean.
Disk Format¶
The disk format of a virtual machine image is the format of the underlyingdisk image. Virtual appliance vendors have different formats for laying outthe information contained in a virtual machine disk image.
You can set your image's disk format to one of the following:
This is an unstructured disk image format.
The raw image format is the simplest one, and is natively supported byboth KVM and Xen hypervisors. You can think of a raw image as being thebit-equivalent of a block device file, created as if somebody had copied,say, /dev/sda to a file using the dd command.
This is the VHD (Virtual Hard Disk) disk format, a common disk format used byvirtual machine monitors from VMware, Xen, Microsoft, VirtualBox, and others.
This is the VHDX format, anenhanced version of the vhd format. It has support for larger disk sizesand protection against data corruption during power failures.
TheVMDK(Virtual Machine Disk) format is supported by many common virtual machinemonitors, for example the VMware ESXi hypervisor.
The VDI(Virtual Disk Image) format for image files is supported by the VirtualBoxvirtual machine monitor and the QEMU emulator.
The ISOformat is a disk image formatted with the read-only ISO 9660 (also knownas ECMA-119) filesystem commonly used for CDs and DVDs.
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A disk format supported and used by Virtuozzo to run OS Containers.
The QCOW2(QEMU copy-on-write version 2) format is commonly used with theKVM hypervisor. It uses a sparse representation, so the image sizeis smaller than a raw format file of the same virtual disk. It canexpand dynamically and supports Copy on Write.
The AKI/AMI/ARIformat was the initial image format supported by Amazon EC2.The image consists of three files, each of which has its own specificdisk_format identifier:
This indicates what is stored in Glance is an Amazon Kernel Image (AKI).It is a kernel file that the hypervisor will load initially to boot theimage. For a Linux machine, this would be a vmlinuz file.
This indicates what is stored in Glance is an Amazon Ramdisk Image (ARI).It is an optional ramdisk file mounted at boot time.For a Linux machine, this would be an initrd file.
This indicates what is stored in Glance is an Amazon Machine Image (AMI).It is a virtual machine image in raw format.
Container Format¶
The container format refers to whether the virtual machine image is in afile format that also contains metadata about the actual virtual machine.
Note the following:
Glance does not verify that the
container_formatimage propertyaccurately describes the image data payload.Do not assume that all OpenStack services can handle all the containerformats defined by Glance.
Consult the documentation for the service consuming your image to seewhat container formats the service supports.
Virtualbox Virtual Disk Image
You can set your image's container format to one of the following:
This indicates there is no container or metadata envelope for the image.
The ISOformat is a disk image formatted with the read-only ISO 9660 (also knownas ECMA-119) filesystem commonly used for CDs and DVDs.
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The street that got mislaid. The Street That Got Mislaid. Marc much preferred his office, despite the profound lack of excitement of his work, to his room on Oven Street (running north and south from Sherbrooke East to St. Catherine), where his neighbors were noisy and sometimes violent, and his landlady consistently so.
A disk format supported and used by Virtuozzo to run OS Containers.
The QCOW2(QEMU copy-on-write version 2) format is commonly used with theKVM hypervisor. It uses a sparse representation, so the image sizeis smaller than a raw format file of the same virtual disk. It canexpand dynamically and supports Copy on Write.
The AKI/AMI/ARIformat was the initial image format supported by Amazon EC2.The image consists of three files, each of which has its own specificdisk_format identifier:
This indicates what is stored in Glance is an Amazon Kernel Image (AKI).It is a kernel file that the hypervisor will load initially to boot theimage. For a Linux machine, this would be a vmlinuz file.
This indicates what is stored in Glance is an Amazon Ramdisk Image (ARI).It is an optional ramdisk file mounted at boot time.For a Linux machine, this would be an initrd file.
This indicates what is stored in Glance is an Amazon Machine Image (AMI).It is a virtual machine image in raw format.
Container Format¶
The container format refers to whether the virtual machine image is in afile format that also contains metadata about the actual virtual machine.
Note the following:
Glance does not verify that the
container_formatimage propertyaccurately describes the image data payload.Do not assume that all OpenStack services can handle all the containerformats defined by Glance.
Consult the documentation for the service consuming your image to seewhat container formats the service supports.
Virtualbox Virtual Disk Image
You can set your image's container format to one of the following:
This indicates there is no container or metadata envelope for the image.
OVF(Open Virtualization Format) is a packaging format for virtual machines,defined by the Distributed Management Task Force (DMTF) standards group.An OVF package contains one or more image files, a .ovf XML metadata filethat contains information about the virtual machine, and possibly otherfiles as well.
An OVF package can be distributed in different ways. For example,it could be distributed as a set of discrete files, or as a tar archivefile with an .ova (open virtual appliance/application) extension.
Virtualbox Virtual Disk Image File
This indicates what is stored in Glance is an Amazon kernel image.
This indicates what is stored in Glance is an Amazon ramdisk image.
This indicates what is stored in Glance is an Amazon machine image.
This indicates what is stored in Glance is an OVA tar archive file,that is, an OVF package contained in a single tar archive file.
This indicates what is stored in Glance is a Docker tar archive ofthe container filesystem.
Virtualbox Hard Disk File Type
Virtual Disk Image
The exact format of the compressed file is not specified. It is theresponsibility of the consuming service to analyze the data payloadand determine the specific compression format. A particularOpenStack service may only support specific formats.
You may assume that any OpenStack service that creates an image witha ‘compressed' container format will be able to consume that image.
Virtualbox Disk Image Download
Consult the documentation for the service that will consume yourimage for details.
