Planning

Network Planning

HyperReplication involves a primary storage device and a secondary storage device. You must plan the networking mode for remote replication and replication links between the storage devices before configuring HyperReplication.

HyperReplication supports Fibre Channel and IP networks as well as Fibre Channel and Ethernet ports for replication. Based on application scenarios, the following three networking modes are available: direct connection using Ethernet ports, direct connection using Fiber Channel ports (multi-mode optical fibers), and connection through remote transfer devices, such as switches, routers, and Dense Wavelength Division Multiplexing (DWDM) devices.

In an active-passive disaster recovery solution based on synchronous remote replication:

• On a Fibre Channel replication network, if the distance between two sites equals to or shorter than 25 km, you can use both switches and raw optical fibers for direct connection; if the distance between two sites equals to or longer than 25 km, you must use DWDM devices to set up a network between two sites.
• On an IP replication network, if the distance between two sites equals to or shorter than 80 km, you can use both switches and raw optical fibers for direct connection; if the distance between two sites equals to or longer than 80 km, you must use DWDM devices to set up a network between two sites.

If two storage devices are connected using a switch through Fibre Channel ports, you are advised to divide their access ports on the switch into the same zone. This ensures isolation between host service ports and inter-array replication service ports, minimizing the impact on each other.

Data Planning

• Capacity planning
  • LUN: The primary LUN and secondary LUN must have the same capacity.