Quoting from the EqualLogic official announcement:
EqualLogic, the leading provider of enterprise-class iSCSI storage area network (SAN) solutions, today announced that it has joined the VMware Technology Alliances Program as part of an ongoing effort to fully integrate EqualLogic PS Series iSCSI SAN solutions with VMware’s suite of virtual infrastructure software-including the new iSCSI-enabled VMware ESX Server, which is part of VMware Infrastructure 3.
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In addition to participation in the VMware Technology Alliances Program, EqualLogic and VMware have signed a cooperative support agreement to ensure that customers experience seamless support for their deployment of the two companies’ combined product sets. The agreement provides VMware and EqualLogic direct access to each other’s support engineering resources to jointly support customers who have deployed VMware virtual environments with a PS Series SAN.