COMSTAR Replaces iSCSI Target Daemon

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Oracle Solaris 10 uses the iSCSI target daemon, the iscsitadm command, and the ZFS shareiscsi property to configure iSCSI LUNs.

COMSTAR (Common Multiprotocol SCSI Target) features provide the following components:

Support for different types of SCSI targets, not just the iSCSI protocol.
ZFS volumes are used as backing store devices for SCSI targets by using one or more of COMSTAR's supported protocols.

Note - Although the iSCSI target in COMSTAR is a functional replacement for the iSCSI target daemon, no upgrade or update path exists for converting your iSCSI LUNs to COMSTAR LUNs.

Both the iSCSI target daemon and the shareiscsi property are not available in Oracle Solaris 11.

Use the following commands to manage iSCSI targets and LUNs:

itadm – Manages SCSI targets.
srptadm – Manages SCSI RDMA Protocol (SRP) target ports.
stmfadm – Manages SCSI LUNs. Rather than setting a special iSCSI property on the ZFS volume, create the volume and use the stmfadm command to create the LUN.

See Chapter 8, Configuring Storage Devices With COMSTAR, in Managing Devices in Oracle Solaris 11.2 .