Straight from the vsphere 4 handbook:

Dynamic Discovery Also known as Send Targets discovery. Each time the initiator contacts a

specified iSCSI server, the initiator sends the Send Targets request to the server.

The server responds by supplying a list of available targets to the initiator. The

names and IP addresses of these targets appear on the Static Discovery tab. If

you remove a static target added by dynamic discovery, the target might be

returned to the list the next time a rescan happens, the HBA is reset, or the host

is rebooted.

Static Discovery The initiator does not have to perform any discovery. The initiator has a list of

targets it can contact and uses their IP addresses and target names to

communicate with them.

Vsphere iSCSI config PDF:

http://www.vmware.com/pdf/vsphere4/r40/vsp_40_iscsi_san_cfg.pdf

To answer your question I dont believe there is any real benefit that I could see in using dynamic over static.

Regards,

Chad King

VCP

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