MSA 2012i and VMware 3.5i

[Yanko]

Hello guys,
We have a MSA 2012i SAN with 12 HDD with 5 TB Storage with use it in combination with VMware 3.5i in 4 Host. We partition the SAN in 3 LUNs, 1 for VMware (Sharing with 4 Host), 1 for DATA (NTFS) and 1 for SQL (NTFS). From VMWare 3 Host can see the VMware LUN but the last Host can not. The strange thing is the iSCSI software adapter see the LUN but in the storage the LUN NOT APPEARS.
Any idea?

Thanks???