text: Figure 3-8 Storwize V7000 iSCSI overview 
  
  Both onboard Ethernet ports of a Storwize V7000 node can be configured for iSCSI. For each 
  instance of an iSCSI target node (that is, each Storwize V7000 node), you can define two 
  IPv4 and two IPv6 addresses or iSCSI network portals: 
  
  (cid:2) If the optional 10 Gbps Ethernet feature is installed, you can use them for iSCSI traffic. 
  
  (cid:2) Generally, enable jumbo frames in your iSCSI storage network. 
  
  (cid:2) iSCSI IP addresses can be configured for one or more nodes. 
  
  (cid:2) Decide whether you implement authentication for the host to Storwize V7000 iSCSI 
  
  communication. The Storwize V7000 supports the Challenge Handshake Authentication 
  Protocol (CHAP) authentication methods for iSCSI. 
  
  **3.7.1 iSCSI protocol**
  
  The iSCSI connectivity is a software feature that is provided by the Storwize V7000 code. The 
  iSCSI protocol is a block-level protocol that encapsulates SCSI commands into Transmission 
  Control Protocol/Internet Protocol (TCP/IP) packets. Therefore, iSCSI uses IP network rather 
  than requiring the Fibre Channel infrastructure. The iSCSI standard is defined by Request For 
  Comments (RFC) 3720. 