http://privex3guvvasyer6pxz2fqcgy56auvw5egkir6ykwpptferdcb5toad.onion/articles/custom-dedicated-virtual-servers
We can generally increase the size of the main virtual disk for a small fee, depending on how much extra space you require. For advanced users, we can add additional virtual drives to a VPS, which will be attached unformatted (and without a reboot), so you can set them up however you please, whether with LVM, a custom partition table, or just format the entire virtual drive with a filesystem.