Administrator Guide

Deploy metro node Local within a single data center.
Metro node Metro
Metro node Metro consists of two metro node clusters connected by inter-cluster links with not more than 10ms Round Trip
Time (RTT). metro node Metro:
● Transparently relocates data and applications over distance, protects your data center against disaster.
Manage all of your storage in both data centers from one management interface.
● Mirrors your data to a second site, with full access at near local speeds.
Deploy metro node Metro within a data center for:
● Additional virtual storage capabilities beyond that of a metro node Local.
● Higher availability.
Metro clusters can be placed up to 100 km apart, allowing them to be located at opposite ends of an equipment room, on
different floors, or in different fire suppression zones; all of which might be the difference between riding through a local
fault or fire without an outage.
Deploy metro node Metro between data centers for:
● Mobility: Redistribute application workloads between the two data centers.
● Availability: Applications must keep running in the presence of data center failures.
● Distribution: One data center lacks space, power, or cooling.
Combine metro node Metro virtual storage and virtual servers to:
● Transparently move virtual machines and storage across synchronous distances.
● Improve utilization and availability across heterogeneous arrays and multiple sites.
Distance between clusters is limited by physical distance, by host, and by application requirements. metro node Metro clusters
contain additional I/O modules to enable the inter-cluster WAN communication over IP or Fibre Channel.
Metro node hardware platforms
Metro node hardware platform is based on the Dell R640 PowerEdge server.
Configuration highlights
A metro node primarily consists of:
● Two hardware nodes
● The two nodes are directly and redundantly connected using two Cat6 shielded cables for management connectivity and two
Dell Direct-Attach-Copper (DAC) cables with SFP plugs for local data com connectivity.
● Two 32 Gig, 2 port FC HBA for FE and BE connectivity.
● The management server runs virtually on the metro node hardware . Each node has a public Ethernet port which provides
cluster management services when connected to the network.
Introducing metro node
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