VDDK api VixDiskLib_Create creates 25 MB file size by default

Hi,

I have to create a disk of total Size 200 GB. So i chose VIXDISKLIB_DISK_MONOLITHIC_SPARSE disk to be created so it can grow as the size increases,

// Fill createParams for target

createParams.adapterType = VIXDISKLIB_ADAPTER_IDE;

createParams.capacity    = 419430400;

createParams.diskType = VIXDISKLIB_DISK_MONOLITHIC_SPARSE;

VixError vixError = VixDiskLib_Create(_conn, vmdkFilePath.c_str(), &createParams, NULL, NULL);

CHECK_AND_THROW(vixError);

this craete API creates 25 MB file.Is it normal ? Is so does the size of file increase depending upon createParams.capacity ? Why is so ?

Please help.

/Thanks