IBM Storwize V7000, Введение и руководство по внедрению

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IBM Flex System V7000 Storage Node Introduction and Implementation Guide
The iSCSI session, which consists of a
login phase
and a
full feature phase
, is completed with
a special command.
The login phase of the iSCSI is identical to the FC port login process (PLOGI). It is used to
adjust various parameters between two network entities and to confirm the access rights of
an initiator.
If the iSCSI login phase is completed successfully, the target confirms the login for the
initiator; otherwise, the login is not confirmed and the TCP connection breaks.
As soon as the login is confirmed, the iSCSI session enters the full feature phase. If more
than one TCP connection was established, iSCSI requires that each command / response
pair goes through one TCP connection. Thus, each separate read or write command is
carried out without the necessity to trace each request for passing separate flows. However,
separate transactions can be delivered through separate TCP connections within
one session.
For further details about configuring iSCSI, see Chapter 11, “SAN connections and
configuration” on page 457.
2.6.15 Fibre Channel over Ethernet (FCoE)
Fibre Channel over Ethernet (FCoE) is a standard specified by ANSI T11 committee within
the FC-BB-5 for enabling the transmission of FC protocol and data across an Ethernet
network. As shown in Figure 2-18, the new environment supports both FCoE and TCP/IP
traffic to be able to share a common Ethernet network.
Figure 2-18 New enhanced Ethernet environment support
Changing names: Observe the following precautions when changing system or node
names for an IBM Flex System V7000 Storage Node clustered system that has servers
connected to it using SCSI. Be aware that because the system and node name are part of
the IQN for IBM Flex System V7000 Storage Node, you can lose access to your data by
changing these names. The IBM Flex System V7000 Storage Node GUI shows a specific
warning, but the CLI does
not
.