Check my math, vmware hard drive sizes

I am following this EE guide:
http://www.experts-exchange.com/Software/VMWare/A_12938-HOW-TO-Shrink-a-VMware-Virtual-Machine-Disk-VMDK-in-15-minutes.html

The goal is to permanently shrink/trim some thinly provisioned vmdk files to free space on the datastores

The overall process is defrag, shrink via disk management in windows, edit the vmdk file, migrate the vm and migrate it back

I've done this on a test server and it worked great, but for this production one (have good backups) i just want to make absolutely sure i edit the vmdk with the correct numbers (so as to not truncate live data)

i've already shrunk the ntfs volume from something like 796gb down to 350gb and see unallocated space, so i know for sure the end of the disk is ok to chop off.

system reserved: 100mb (capacity 104,853,504 (99.9mb))
    (29,491,200 (28.1mb) used, 75,362,304 (71.8mb) free)
C: = 341.80gb  (capacity = 367,001,595,904) which windows reports as 341gb
    (131,696,746,496 used (122gb), 235,304,849,408 (219gb) free)
unallocated:  438.10gb (448619mb)

in the vmdk file, the drive is defined as size:  1635778560  (approximately 780gb)

Based on the linked article above, the way i calculate the new value should be: 734003200 (350gb)

Is that correct, and can you demonstrate that it is so?
LVL 2
FocISAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Its late here in the UK, I'll run the numbers in the morning or you....
0
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Sorry, I missed this question so just returning to it....

okay you values are correct, you have posted

e.g.

 1635778560 (approximately 780gb)

Size = 780GB x (1024)^3   = 837518622720

837518622720 / 512

= 1635778560 CORRECT

734003200 (350gb)

Size = 350GB x (1024)^3  = 375809638400

375809638400 / 512

= 734003200 CORRECT

Your published figures in your post, agree with my calculations.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
VMware

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.