Administrator Guide

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Remote Storage Centers and Replication QoS
A remote Storage Center is a Storage Center that is congured to communicate with the local Storage Center over the Fibre
Channel and/or iSCSI transport protocols. Replication Quality of Service (QoS) denitions control how bandwidth is used to send
replication and Live Volume data between local and remote Storage Centers.
Connecting to Remote Storage Centers
A remote Storage Center is a Storage Center that is congured to communicate with the local Storage Center over the Fibre
Channel and/or iSCSI transport protocols.
Storage Centers can be connected to each other using Fibre Channel, iSCSI, or both. Once connected, volumes can be replicated
from one Storage Center to the other, or Live Volumes can be created using both Storage Centers.
Connecting Storage Centers Using Fibre Channel
When Storage Centers are connected to the same Fibre Channel fabric and zoning is congured correctly, each Storage Center
automatically appears as a remote Storage Center; no additional conguration steps are required.
1. Connect both Storage Centers to the same Fibre Channel fabric.
2. Congure Fibre Channel zoning to allow the Storage Centers to communicate. When communication is established, each
Storage Center automatically appears as a remote Storage Center.
Connecting Storage Centers Using iSCSI
The following tasks describe how to add and remove iSCSI connections to remote Storage Centers.
NOTE: For user interface reference information, click Help.
Congure an iSCSI Connection for Remote Storage Systems
Add an iSCSI connection to a remote Storage Center or PS Group if you want to transfer replication and/or Live Volume data using
the iSCSI protocol.
Prerequisites
• The Storage Center or PS Group for which you want to congure iSCSI connections must be added to Storage Manager.
• Remote connections from Storage Center to PS Group require virtual fault domains.
• If the local Storage Center iSCSI ports are congured for virtual port mode and the ports are located behind a router that
performs network address translation (NAT), NAT port forwarding must be congured for the iSCSI fault domain.
• If you intend to use Challenge Handshake Authentication Protocol (CHAP) authentication for iSCSI replication trac, the iSCSI
fault domains that are used for replication on each Storage Center have CHAP enabled.
About this task
NOTE: PS Groups do not support Live Volume.
Steps
1. Click the Storage view.
2. In the Storage pane, select a Storage Center or PS Group.
3. Open the Congure iSCSI Connection wizard.
• From a Storage Center:
1. Click the Storage tab.
Remote Storage Centers and Replication QoS
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