Can I change the block size of the local stroage on a ESXI 4.1 U1 host

Delete the default datastore and reformat as 8MB block size.

or install ESXi 4.1 U1 on a USB flash drive, and then destroy the datastore, and re-create using 8MB block size.

if you have installed ESXi 4.1 U1 on the same set of disks, that are occupied by the datastore it can be difficult.

Install ESXi 4.1 U2, because you can specify it at installation!

see here

http://kb.vmware.com/kb/1012683

as indicated by hanccoka, you can't change block size without deleting the datastore and recreate it.

so if you have vmotion, configure a new datastore, vmotion the VMs out, then destroy the datastore and recreate it with the proper block size desire then delete the temporary datastore.

I figured it out after sending this. I just deleted the datastore and recreated it with the 8MB block size.
Thanks

I've requested that this question be closed as follows:

Accepted answer: 250 points for hanccocka's comment #a38710520
Assisted answer: 0 points for vmich's comment #a38710550

for the following reason:

delete and recreate datastore with 8MB

If my Answer was Helpful, Please Assign Points.

I did I thought I assigned 250 even though I figured it out before your reply.
I can try it again if the points did not come to you..

I've requested that this question be closed as follows:

Accepted answer: 250 points for hanccocka's comment #a38710520
Assisted answer: 0 points for vmich's comment #a38710550

for the following reason:

Deleted and recreated the datastore with 8MB block size.

Ok sorry about that...

No problems, Merry Christmas and A Happy New Year.

Same to you......