iSCSI

Direct connections and switch connections to servers are available.

The following types of host interfaces are available:

• iSCSI 10Gbit/s

In order to maintain iSCSI performance, the iSCSI network should be physically separated from other types of networks (such as networks for Internet access and file transfers).

• Operation Mode

  The iSCSI 10Gbit/s operation mode is 10GBASE-SR or 10GBASE-CR.

  10GBASE-CR is a form of communication that uses Twinax cables and is 10GBASE-SR-compliant.

• CHAP

  CHAP authentication can prevent unauthorized access. The following CHAP authentication methods are supported:

  • Unidirectional CHAP

  • Bidirectional CHAP

• Tag VLAN

  The tag VLAN function is supported. 16 tags (VLAN ID) can be used for each port.

• Jumbo Frame

  Enabling Jumbo Frame makes data transfer more efficient by increasing the amount of data that can be transferred for each Frame.

  Table: Ethernet Frame Capacity (Jumbo Frame Settings)

  Jumbo Frame settings	Ethernet frame capacity
  Enabled	Up to 9000 bytes
  Disabled	Up to 1500 bytes

  Caution

  Server-side CPU load can be reduced by using Jumbo Frame. However, I/O performance may be reduced by 10% to 30%.

• Security Architecture for Internet Protocol (IPsec)

  The IPsec function is not supported. Connect the server using a LAN switch that has the IPsec function as required.

• Internet Protocol

  IPv4 and IPv6 are supported.

• Data Center Bridging (DCB)

  iSCSI 10Gbit/s interfaces support the Data Center Bridging (DCB) function.

  DCB is an enhanced function of traditional Ethernet and a standard for Fabric connections in data centers. The DCB function allows connections to Converged Enhanced Ethernet (CEE) environments.