Does TRIM support help direct access file performance?

I use direct access files, meaning updated in place, for many
purposes including:
. email storage
. USENET article storage
. virtual disks

Will TRIM support in the drive affect the performance of solid state
disks used on my Windows 7 system? In particular, I don't see how
the drive would be made aware of a file being deleted on a virtual
disk whether or not the virtual disk is mounted in the host operating
system or a virtual machine.

In message Mark F
was claimed to have wrote:

I use direct access files, meaning updated in place, for many
purposes including:
. email storage
. USENET article storage
. virtual disks

Will TRIM support in the drive affect the performance of solid state
disks used on my Windows 7 system? In particular, I don't see how
the drive would be made aware of a file being deleted on a virtual
disk whether or not the virtual disk is mounted in the host operating
system or a virtual machine.

TRIM won't be directly aware of the content within a virtual hard drive
or other container.

However, if you occasionally shrink/compact your virtual hard drives,
TRIM will be able to work as expected and recover this space.

In addition, if your drive supports garbage collection (independent of
TRIM) then all you need to do is run a pre-compactor tool (or just write
nulls to all available bytes within the virtual hard drive) to achieve
the same results.