virtualbox.org

I'm trying to plan this for reliability + performance.

I have 2x1TB disks available. One is partially used for the host system. The rest I can use however. I was thinking of using the 2nd physical disk, physically partition it and use that for my guest OS directly mounting it. It feels weird thinking of creating a 900+ gig virtual disk.

Are there any known limits or performance hits the larger it gets?

Not recommend. Why do you want ~1Tb in guest anyway? Break it down and allocate it as separate VDIs mounted as separate logical HDDs as an when required much as you would use LVM.

TerryE wrote:Not recommend. Why do you want ~1Tb in guest anyway? Break it down and allocate it as separate VDIs mounted as separate logical HDDs as an when required much as you would use LVM.

Because I will be using this as my data disk.

Would it be preferrable to create the VMDK file mapped to the physical device? I figure it's probably better to talk as direct to the disk as possible when dealing with larger sizes.

mike503 wrote:Would it be preferable to create the VMDK file mapped to the physical device?

You could do but there is no performance advantage in doing so.