Figure 1:Ip/Fc Network Example - HP ISCSI SR2122 Getting Started Manual

iSCSI in a Heterogeneous SAN
iSCSI in a Heterogeneous SAN
Although the iSCSI protocol is written as a complete data transport from host to storage this
chapter will only discuss the current HP supported topology of iSCSI hosts to Fibre Channel
storage using the HP SR2122 iSCSI Router.
For further details please read "HP StorageWorks iSCSI storage router 2122 User Guide PN:
304835-002" Section 4 -SCSI Routing Overview.
Typical Network Structure
The addition of iSCSI to the SAN means that two data protocols need to be configured/
managed – TCP/IP and Fibre Channel. IP hosts with iSCSI drivers access the SR2122 through
an IP network connected to the Gigabit Ethernet interface of each SR2122. The SR2122
accesses FC storage devices connected to the Fibre Channel interfaces of each SR2122.
A typical IP/FC network example:
were just local drives attached
1. Defines Client Access.
2. Defines Paths to Targets.
3. Converts Ethernet IP to
4. Provides Routing functions.
5. Provides Target Addressing.
Figure 1: IP/FC Network Example
6
Terminology:
Client, Host, or
iSCSI Initiator
Has the 'iSCSI Driver'
loaded on it to enable
Target resource
recognition & attachment.
'Sees' the Storage 'Target'
Resources (LUNs) as if they
directly to the system.
iSCSI Router
FC protocol and back.
Fibre Channel Switch/Fabric
SAN Storage
Has the LUNs
(resources) configured
without ANY special
drivers, F/W, or
protocols required.
Components:
8000 SD
PR O L IANT
Server or Workstation
ESC
running W2K or Linux
S D
DLT
IP Switch/Fabric
Fibre Channel Ports
Gigabit Ethernet Ports
iSCSI SR2122 Storage Router: Getting Started Guide
IP Ethernet Protocol
HP SR2122
Storage Router
FC Protocol
HP
StorageWorks
MSA 1000
Storage