Vista - VHD errors - 'the parameter is incorrect'

Hi All,

I've just solved a problem that had been affecting my evaluation
of Windows 2008 Hyper-V.

Basically, any VHD operation (Inspect, Create etc), on certain
clustered SAN disks would fail - windows would be fine, and I could
copy/create/delete, but attempting to create a vhd, or import from VS
2005 would fail with a cryptic 'The parameter is incorrect error'.

The solution is to ensure the LUNS are created with a blocksize
of 512bytes - some of mine had been created with a blocksize of 4096
bytes - NTFS & clustering were working fine, but NO VHD operations
would succeed.

I am talking about the Hardware level LUN definition here, NOT an
NTFS format size.

Hope this helps another systems admin - MS should really either
support 4096 bytes as a blocksize in both NTFS and HYPER-V or at least
give a decent error message.

Regards,
Graham White

Interesting. I routinely create NTFS partitions of 16 kb cluster size for
use with VHDs, but don't have a SAN to work with so not seeing your
situation.

--
Charlie.
http://msmvps.com/blogs/xperts64
http://mvp.support.microsoft.com/profile/charlie.russel

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