Administrator Guide

Multi-VLAN Tagging
If a Storage Center supports multi-VLAN tagging, a maximum of 64 VLAN IDs can be congured for each iSCSI I/O port. An iSCSI I/O port
can belong to up to 64 fault domains—one for each VLAN.
Multi-VLAN tagging is supported by Storage Centers that meet the multi-VLAN tagging requirements.
Multi-VLAN Tagging Requirements
The following table lists the requirements that a Storage Center must meet to support multi-VLAN tagging.
Requirement Description
Storage Center controller model Multi-VLAN Tagging is not supported on SCv3000 or SCv2000 storage systems.
Storage Center iSCSI I/O card
hardware
Chelsio T3, T5, or T6 iSCSI cards must be installed in the Storage Center.
Storage Center front-end
connectivity mode
The Storage Center iSCSI ports must be congured for virtual port mode. Legacy mode is not
supported.
Types of iSCSI Fault Domains
When a Storage Center meets the multi-VLAN tagging requirements, two types of iSCSI fault domains can be created.
• Physical – The rst fault domain congured for a given set of iSCSI ports.
– Physical fault domains do not require a VLAN ID, but can be congured to use a VLAN ID.
– Physical fault domains support iSCSI replication to and from remote Storage Centers.
• Virtual – Subsequent VLAN fault domains congured for the same set of iSCSI ports are referred to as virtual fault domains.
– Virtual fault domains must be assigned a VLAN ID.
– Virtual fault domains do not support iSCSI replication.
– Virtual fault domains do not support IPv6.
Creating iSCSI Fault Domains
Create an iSCSI fault domain to group ports that can fail over to each other because they have connectivity to the same resources.
NOTE
: For user interface reference information, click Help.
Create an iSCSI Fault Domain
Create an iSCSI fault domain to group physical ports for failover purposes.
Prerequisites
• In virtual port mode, all iSCSI ports that are connected to the same iSCSI network should be added to the same fault domain.
• In legacy mode, each pair of primary and reserved ports that are connected to the same iSCSI network should be added to a unique
fault domain. The primary port should be located on a dierent controller than the secondary port.
• Physical ports cannot be selected and added to a fault domain if they are already added to another fault domain.
• Each iSCSI port that you want to add to the fault domain must be assigned an IP address, subnet mask, and gateway in the same
network as the iSCSI control port for the fault domain.
Steps
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.
142
Storage Center Maintenance