Dell DX6000 - Manual (Page 14)

14 DX Object Storage Platform Overview
Subcluster Configuration
A Dell DX Storage Cluster can be split into two or more subclusters. The
subclusters are physically part of the same cluster but are recognized as
logically separate entities by the DX Object Storage software that provides
local area replication.
A subcluster can be:
• A set of nodes within one physical group (such as building, floor, wing,
and so on)
• An environmental group (such as rack, network switch, and power
circuit)
• Any other defined groups
If the building or power circuit fails, other nodes have an optimal set of data
replicas. See Figure 2-3.
All DX Storage Nodes within the DX Storage Cluster have the same network
connectivity requirements. The DX Storage Nodes must be in the same IP
subnet, must be able to participate in multicast and UDP traffic, and so on.
Clients may address DX Storage Nodes within any subcluster and are
redirected to the proper DX Storage Node. As a result, application awareness
of a subcluster configuration is not required.
For more information about subclusters, see "Local Area Replication" in the
DX Object Storage Advanced Administration Guide at
support.dell.com/manuals.
book.book Page 14 Monday, October 17, 2011 3:42 PM