Single NIC sharing

iSCSI and public

LAN

Corporate,

 

Corporate,

public or private

 

public or private

network

 

network

Management

 

Mgmt

Mgmt

traffic

Shared iSCSI LAN

traffic

traffic

iSCSI

and public LAN

iSCSI

iSCSI

traffic

 

traffic

traffic

SSR212PPi

SSR212PP2i

 

(dual SP)

EMC3324

FIGURE 18. SSR212PPi/SSR212PP2i (Single SP) to a Shared Single iSCSI NIC

IP addresses in a shared environment should match the corporate network IP address scheme.

Advantages

Sharing a switch with your public LAN costs less than dedicating a switch for iSCSI traffic.

Provides low-cost storage for up to ten servers

SSR212PP2i provides failover capabilities in the event of a storage processor failure.

SSR212PP2i has two storage processors and thus improves overall storage system performance.

Disadvantages

Possible contention between iSCSI traffic and LAN traffic on a shared Ethernet switch could reduce performance. The source of contention (iSCSI or LAN traffic) is also difficult to identify.

Limited failover capability since the single initiator provides only one path from a server to the iSCSI Ethernet switch.

All traffic on a single NIC reduces overall server performance.

A shared LAN usually requires CHAP security.

Intel Storage System SSR212PP User Guide

39

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Intel manual SSR212PPi/SSR212PP2i Single SP to a Shared Single iSCSI NIC