New ESX 4.1 Host Cannot Find Existing Datastores from SAN

I just added a new host to our VMware environment  ESXi 4.1  , we have SAN & HBA's in the Dell PowerEdge server 710 , we presented the luns to the host from the san.  In vCenter when we rescan all it only shows us the local drives.  We have 3 other hosts that are all working correctly.
shart68Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Is the LUN smaller than 2TB-512bytes?

Does the LUN ID appear in storage adaptors or missing?

Is the LUN formatted with a VMFS datastore?

Have you configured zoning and WWNN correctly for this server on the SAN, Switch Fabric?

Is this iSCSI or Fibre?

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shart68Author Commented:
Thank You, we did not zone on the switch.
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