EMC CX500I Configuration Guide - Page 22

iSCSI, iSCSI Storage Components - cx500 ethernet

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About CX300, CX500, CX500i, and CX700 Storage Systems iSCSI Internet SCSI (iSCSI) is a serial protocol that uses the internet protocol (IP) for transmission of both network and I/O data. An iSCSI network (LAN) is a set of point-to-point connections between nodes; each connection is made directly or through one or more network components such as switches. Each node has its own unique IP address, while the LAN on which the storage system resides has a subnet mask address and a gateway address. Nodes are connected through a LAN by Ethernet CAT 6, CAT 5E, or CAT 5 copper cables. (We recommend CAT 6 cables for gigabit Ethernet connections.) Each node in an iSCSI environment is either an initiator (in a server) or a target (in the storage system). Network switches are not nodes. Figure 1-2 shows an initiator node and a target node. Host Adapter (Initiator) Node Adapter Figure 1-7 iSCSI Connection Storage System (Target) Node SP EMC1802a Nodes - Initiator and Target iSCSI Storage Components An iSCSI storage environment has three main components: ◆ Initiator components: servers containing host adapters, drivers, and software. ◆ LAN components: LAN cables and LAN devices such as switches and routers. ◆ Target components: storage systems with storage processors, power supply, cooling hardware, and disks. 1-10 EMC CLARiiON CX300, CX500, CX500i, and CX700 Storage Systems Configuration Planning Guide

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EMC CLARiiON CX300, CX500, CX500i, and CX700 Storage Systems Configuration Planning Guide
About CX300, CX500, CX500i, and CX700 Storage Systems
iSCSI
Internet SCSI (iSCSI)
is a serial protocol that uses the internet protocol
(IP) for transmission of both network and I/O data.
An iSCSI network (LAN) is a set of point-to-point connections
between nodes; each connection is made directly or through one or
more network components such as switches. Each node has its own
unique IP address, while the LAN on which the storage system
resides has a subnet mask address and a gateway address. Nodes are
connected through a LAN by Ethernet CAT 6, CAT 5E, or CAT 5
copper cables. (We recommend CAT 6 cables for gigabit Ethernet
connections.)
Each node in an iSCSI environment is either an initiator (in a server)
or a target (in the storage system). Network switches are not nodes.
Figure 1-2 shows an initiator node and a target node.
Figure 1-7
Nodes - Initiator and Target
iSCSI Storage Components
An iSCSI storage environment has three main components:
◆
Initiator components: servers containing host adapters, drivers,
and software.
◆
LAN components: LAN cables and LAN devices such as switches
and routers.
◆
Target components: storage systems with storage processors,
power supply, cooling hardware, and disks.
EMC1802a
Host Adapter (Initiator)
iSCSI Connection
Storage System (Target)
Node
Adapter
Node
SP