Dell SC8000, Руководство по развертыванию

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Chapter 4 Connect the Front End
114 Storage Center SC8000 Controller Deployment Guide
Virtual Port Mode with Single-Network iSCSI
Connect virtual port mode iSCSI to a single network if only one Ethernet switch is available
and you want to protect against port or controller failure.
In this configuration, there is one fault domain because there is a single network. Each
controller is connected to the fabric by at least two iSCSI connections to provide port
redundancy. If a single port fails, its virtual port fails over to another port. If a controller
fails, the virtual ports on the failed controller move to ports on the other controller. This
configuration is vulnerable to switch failure.
Prerequisites

Each controller must have two available iSCSI front ‐ end ports.

The requirements for virtual port mode must be met.
Steps
1 Connect each server to the iSCSI network.
2 Connect fault domain 1 (shown in orange) to iSCSI network 1.

Controller A, slot 3, port 1
→
Switch 1

Controller B, slot 3, port 1
→
Switch 1

Controller B, slot 4, port 2
→
Switch 1

Controller A, slot 4, port 2
→
Switch 1
Figure 98. Dual-Controller with Single-Network iSCSI in Virtual Port Mode
Ethernet Switch 1
iSCSI Network 1
Server
Controller B
Controller A
4
3
2 1
4
3
2 1
1 2
1 2
2 1
2 1