Administrator Guide

● If you intend to use Challenge Handshake Authentication Protocol (CHAP) authentication for iSCSI replication traffic, 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 Configure iSCSI Connection wizard.
● From a Storage Center:
a. Click the Storage tab.
b. In the Storage tab navigation pane, select Remote Storage Centers.
c. In the right pane, click Configure iSCSI Connection. The Configure iSCSI Connection wizard opens.
● From a PS Group, select Actions > Replication > Configure iSCSI Connection. The Configure iSCSI Connection
wizard opens.
4. Select the Storage Center or PS Group for which you want to configure an iSCSI connection, then click Next. The wizard
advances to the next page.
5. Select iSCSI controller ports and select the network speed.
a. From the iSCSI Network Type drop-down menu, select the option that corresponds to the speed of the connection
between the Storage Centers.
b. In the Local iSCSI Controller Ports table, select one or more iSCSI ports on the local Storage Center to use for the
iSCSI connection.
c. In the Remote iSCSI Controller Ports table, select one or more iSCSI ports on the remote Storage Center orPS Group
to use for the iSCSI connection.
6. If network address translation (NAT) is performed for the connection between the Storage Centers, configure NAT settings.
NOTE:
NAT port forwarding is supported only if both Storage Centers are configured for legacy port mode, or if both
Storage Centers are running version 6.5 or later and configured for virtual port mode. PS Groups do not support NAT
port forwarding.
a. The Configure NAT dialog box opens.
b. Configure port forwarding information for each local and remote iSCSI port.
● In virtual port mode, the NAT IP Address and NAT Public Port fields display the translated public IP address and
port. Click Change to modify these fields.
● In legacy mode, type the translated public IP address and port in the corresponding NAT IP Address and NAT Public
Port fields.
c. Select the Prefer IPv6 over IPv4 for remote connection checkbox if you want to use IPv6 addresses.
d. When you are finished, click OK.
7. (CHAP only) If the local iSCSI fault domain, remote iSCSI fault domain, or both, have CHAP enabled, type a shared secret in
the CHAP Secret field.
8. (CHAP only) If you have selected fault domains on both Storage Centers that have bidirectional CHAP enabled, select the
Use Bidirectional CHAP checkbox to enable the Storage Centers to challenge the fault domains on each Storage Center
for a shared secret.
9. If replicating to a PS Group, configure the storage pool for the destination volume.
a. From the Storage Pool drop-down menu, select the storage pool that the destination volume will use.
b. In the Delegated Space (For Remote PS Group) field, set the amount of space allowed for the destination volume.
NOTE:
If the replication status changes to Down because of insufficient delegated space, increase the delegated
space in the Modify Space Settings dialog box and wait ten minutes for the replication status to change to Up.
10. Click Finish.
Related concepts
Configure NAT Port Forwarding for an iSCSI Fault Domain on page 268
496
Remote Storage Centers and Replication QoS