Administrator Guide

7 From the Ping Size drop-down menu, select a size in bytes for the ping packets, not including overhead. If you select Other, type a
value between 1 and 17000 bytes in the eld below the menu.
NOTE: The Ping Size drop-down menu might not appear depending on the hardware I/O cards used by the Storage Center.
8 Click OK. A message displays the results of the test.
9 Click OK.
Related link
Test Network Connectivity for an iSCSI Port
Remove Ports from an iSCSI Fault Domain
Before you repurpose one or more front-end iSCSI ports, remove them from the fault domains to which they belong.
1 If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane.
2 From the SYSTEM menu, select Ports.
The Ports view is displayed.
3 Click the Front End Ports tab.
4 Expand iSCSI and click the fault domain link.
The Fault Domain view is displayed.
5 On the Summary tab, click (Edit).
The Edit iSCSI Fault Domain dialog box opens.
6 In the Ports table, deselect the iSCSI ports to remove from the fault domain.
7 Click OK.
Conguring NAT Port Forwarding for iSCSI Fault Domains
Port forwarding allows iSCSI initiators (servers or remote Storage Centers) located on a public network or dierent private network to
communicate with Storage Center iSCSI ports on a private network behind a router that performs Network Address Translation (NAT).
For each Storage Center iSCSI control port and physical port, the router performing NAT must be congured to forward connections
destined for a unique public IP address and TCP port pair to the private IP address and TCP port for the iSCSI port. These port forwarding
rules must also be congured in parallel on the Storage Center fault domains to make sure that iSCSI target control port redirection
functions correctly. Fault domains can only be modied by administrators.
NOTE
: If Storage Center iSCSI ports are congured for legacy mode, the port forwarding rules do not need to be dened on the
Storage Center because there is no control port redirection.
iSCSI NAT Port Forwarding Requirements for Virtual Port Mode
The following requirements must be met to congure NAT port forwarding for an iSCSI fault domain in virtual port mode.
• For each Storage Center iSCSI control port and virtual port, a unique public IP address and TCP port pair must be reserved on the
router that performs NAT.
• The router that performs NAT between the Storage Center and the public network must be congured to forward connections
destined for each public IP address and port pair to the appropriate Storage Center private target iSCSI IP address and private port (by
default, TCP port 3260).
iSCSI NAT Port Forwarding Example Conguration
In this example, a router separates the Storage Center on a private network (192.168.1.0/24) from a server (iSCSI initiator) on the public
network (1.1.1.60). To communicate with Storage Center iSCSI target ports on the private network, the server connects to a public IP
148
Storage Center Maintenance