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    Mounting Storage Using the iSCSI Protocol

    To mount the storage using iSCSI protocol, perform following steps:

    • Create a single VMkernel adapter for iSCSI.
    • Change the port group policy for the iSCSI VMkernel adapter.
    • Bind iSCSI adapters with VMkernel adapters.
    • Set up Jumbo frames with iSCSI.
    • Configure dynamic discovery addresses for iSCSI adapters.
    • Re-scan storage on iSCSI adapters.

    Note: The ESXi host must have permission to access the storage array. This is discussed further in the storage section of this guide.

    For information about configuring and mounting of iSCSI storage connection to a vSwitch (either vSwitch or distributed switch), see:

    Configuring and Troubleshooting iSCSI Storage

    Figure 1 shows an example of an ESXi host deployed in POD1. The port gropus PG-Storage-108 and PG-Storage-208 dvPG have been created for POD1 and POD2, respectively. (The example shows PG-Storage-108.) VMkernel is configured to use the 172.16.8.0/24 subnet for hosts in POD1 and the 172.20.8.0/24 subnet for hosts in POD2 to bind with the respective storage port group to access the EMC storage.

    • EMC storage iSCSI IP for POD1 = 172.16.8.1 and 172.16.8.2
    • EMC storage iSCSI IP for POD2 = 172.20.8.1 and 172.20.8.2

    As mentioned earlier, the iSCSI protocol doesn’t support multichannel (LAG) but can support multipath; you will see only one physical interface bind with the storage port group. To achieve multipath, separate storage port group and network subnet are required to access EMC storage as a backup link.

    Figure 1: POD1 PG-STORAGE-108 Created for iSCSI

    POD1 PG-STORAGE-108 Created for iSCSI

    Published: 2015-04-20