NetApp
7-mode/HA pair/V-Series : LUNs : Understanding LUNs : Guidelines for mapping LUNs to igroups
Guidelines for mapping LUNs to igroups
There are several important guidelines you must follow when mapping LUNs to an igroup.
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You can map two different LUNs with the same LUN ID to two different igroups without having a conflict, provided that the igroups do not share any initiators or only one of the LUNs is online at a given time.
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Make sure the LUNs are online before mapping them to an igroup. Do not map LUNs that are in the offline state.
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You can map a LUN only once to an igroup or a specific initiator.
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You can add a single initiator to multiple igroups. but the initiator can be mapped to a LUN only once. You cannot map a LUN to multiple igroups that contain the same initiator.
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You cannot use the same LUN ID for two LUNs mapped to the same igroup.
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You cannot map a LUN to both FC and iSCSI igroups if ALUA is enabled on one of the igroups. Run the lun config_check command to determine if any such conflicts exist.
VMware RDM
When you perform Raw Device Mapping (RDM) on VMware, the operating system type of the LUN must be the operating system type of the guest operating system.
Parent Topic: Storage node