7/27/2019 What Disk Image Should I Use With VirtualBox

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What disk image should I use with VirtualBox, VDI, VMDK,

VHD or HDD?

Latest versions of VirtualBox supports several formats for virtual disks, but they forgot toprovide a comparison between them.

VDI

VMDK

VHD

HDD

Now, I am interested about a recommendation or comparison that considers the following:

be able to use dynamic sizing

be able to have snapshots

be able to move my virtual machine to another OS or even another free virtualization

solution with minimal effort (probably something that would run fine on Ubuntu).

performance

VirtualBox hasfull support forVDI, VMDK, and VHD and support forParallels Version 2(HDD) (not newer versions).

Answering Your Considerations

be able to use dynamic sizing

VDI, VMDK, and VHD all support dynamically allocated sizing. VMDK has an additionalcapability of splitting the storage file into files less than 2 GB each, which is useful if your file

system has a small file size limit.

be able to have snapshots

All four formats support snapshots on VirtualBox.

be able to move my virtual machine to another OS or even another free

virtualization solution with minimal effort (probably something that would run

fine on Ubuntu).

VDI is the native format of VirtualBox. I didn't search for any other software that supports this

format.

http://superuser.com/questions/360517/what-disk-image-should-i-use-with-virtualbox-vdi-vmdk-vhd-or-hddhttp://superuser.com/questions/360517/what-disk-image-should-i-use-with-virtualbox-vdi-vmdk-vhd-or-hddhttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://superuser.com/questions/360517/what-disk-image-should-i-use-with-virtualbox-vdi-vmdk-vhd-or-hddhttp://superuser.com/questions/360517/what-disk-image-should-i-use-with-virtualbox-vdi-vmdk-vhd-or-hddhttp://www.virtualbox.org/manual/ch05.html#vdidetailshttp://www.virtualbox.org/manual/ch05.html#vdidetails

7/27/2019 What Disk Image Should I Use With VirtualBox

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VMDK is developed by and for VMWare, but Sun xVM, QEMU, VirtualBox, SUSE Studio, and

.NET DiscUtils also support it. (This format might be the most apt for you because you want

virtualization software that would run fine on Ubuntu.)

VHD is the native format of Microsoft Virtual PC. This is a format that is popular withMicrosoft products.

I don't know anything about HDD. Judging from looking at this site, Parallels is a Mac OS X

product and probably isn't suitable for you, especially considering that VirtualBox only supports

an old version of the HDD format.

performance

The format should not affect performance, or at least, performance impacts are negligible.

The factors that influence performance are:

your physical device limitations (much more noticeable on a hard disk drive than a solid-

state drive... Why?)

expanding a dynamically allocated virtual disk drive (write operations are slower as the

virtual diskexpands, but once it's large enough, expanding should happen less)

virtualization technology (hardware vs. software; hardware virtualization helps

VirtualBox and improves the speed of virtual operating systems)

the fact that you are running a virtual operating system. Performance is always slower

than running an operating system on the host because of the virtualization process.

http://en.wikipedia.org/wiki/Solid-state_drivehttp://en.wikipedia.org/wiki/Solid-state_drivehttp://superuser.com/questions/318724/what-are-the-pros-and-cons-of-a-solid-state-drivehttp://www.parallels.com/http://en.wikipedia.org/wiki/Solid-state_drivehttp://en.wikipedia.org/wiki/Solid-state_drivehttp://superuser.com/questions/318724/what-are-the-pros-and-cons-of-a-solid-state-drivehttp://www.virtualbox.org/manual/ch10.html#hwvirt