Supported iSCSI configurations for mirroring

Single session or multi-session iSCSI configurations are supported for mirroring.

Single-session configuration

The following single-session configurations are supported:

A VMware ESX server with one NIC port and a single IPv4 address space configured on it. At the same time, the Spectrum Virtualize Family has a single target IPv4 address space configured on an Ethernet port. This configuration results in a single path from the VMware ESX server to each iSCSI LUN.
A VMware ESX server with one NIC port and a single IPv4 address space configured on it. At the same time, the Spectrum Virtualize Family has two target IPv4 address spaces configured on Ethernet ports, one on each node. This configuration results in two paths visible from the VMware ESX server to each iSCSI LUN.

Multi-session configuration

A maximum of four sessions are supported between a VMware ESXi Server and a Spectrum Virtualize Family node (canister). Therefore, a maximum of eight paths are available to the disk/LUN. For example, four paths or sessions are available to each Spectrum Virtualize Family node (canister) from the iSCSI Qualified Name (IQN) of each iSCSI initiator.

Note: For more information about iSCSI host attachment of VMware hosts, see Guidelines for the Attachment of VMware iSCSI Hosts to SAN Volume Controller and Storwize V7000 – Errata.