DX Object Storage Platform Overview
Network Topologies
The Dell DX Object Storage Platform network consists of one or more DX Storage Clusters connected by DX Content
Router services through a network. There are many possible network topologies depending on the storage network
goals. All networks share the following features:
•
Two or more (minimum three recommended) DX Cluster Services Nodes that provide services to the storage
cluster.
•
Three or more DX Storage Nodes that provide data storage services.
•
Ethernet switches to enable required services within a storage cluster (private network) and access to the
storage nodes from outside the cluster (public network).
•
Services such as Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP).
NOTE: DX Storage Cluster requires a dedicated internal network to ensure that the storage cluster traffic is
protected from unauthorized access. The dedicated network also ensures that the external or corporate network is
isolated from both the PXE boot server and cluster multicast traffic. Single networking is not supported.
The DX supports 1GbE and 10GbE network speeds. All network services required by the cluster are present in the DX
Cluster Services Node software bundle, and preinstalled on the Cluster Services Node. The DX Storage Cluster is
automatically configured with the defaults for all network parameters that must be sufficient for most simple
configurations. All network parameters can be set manually to support more complex configurations. For more
information about setting network parameters, see the
Storage Advanced Administration Guide at dell.com/support/manuals.
Network switch configuration depends on both the network topology and the customer environment. To ensure proper
functioning with default network parameters and to maximize cluster performance, it is recommended that you follow
the best practices listed below, while configuring both the private and public network switches:
•
Disable Link Aggregation Control Protocol (LACP) as the DX Object Storage Nodes bond the system NIC ports in
balanced-alb modes.
•
Disable jumbo frames.
•
Disable spanning tree protocol, if the switches are not being trunked.
•
Disable Flow Control.
•
Disable IGMP snooping.
NOTE: If IGMP snooping must be enabled, there must also be an IGMP querier enabled in the same
network (broadcast domain).
NOTE: If switches are trunked, enable spanning tree protocol and port fast on the data intensive ports.
NOTE: Use of jumbo frames is not recommended. Though they are supported, changes are required to both the DX
system and the network switches.
Contact Dell to customize the network configurations to meet the solution requirements. For more information about
configuring the network for the Dell DX Object Storage Platform, see "Network Topology" in the
Advanced Administration Guide at dell.com/support/manuals.
DX Object Storage Getting Started Guide and the DX Object
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DX Object Storage
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