To back up the configuration before a microcode upgrade on a VSP 5500H, you should use the
"Copy Config Files" option available under the Initial Setting menu in the SVP GUI. This ensures a proper backup of system settings and configuration.

The Interconnect Switches on a VSP 5000 are delivered as standalone 1 U switch chassis that house both the PCIe "interconnect" modules (for routing data between controller nodes) and an Ethernet switch (for management/network traffic), so they serve both network and data-path roles.

Replace all the controller boards.
Upgrading from VSP 5500 to VSP 5600 requires installing new controller boards, as the 5600 uses a different and more advanced controller architecture.
Replace all the Power Supplies with more powerful ones.
The upgrade also requires replacing the power supplies with models that are compatible with and can support the power requirements of the VSP 5600 controllers.

During installation of the Hitachi VSP 5000 enterprise storage system, network configuration planning is essential to ensure proper communication between the storage array and other components in the IT infrastructure.
Key elements of network configuration include:
Assigning IP addresses for management interfaces
Configuring VLANs and subnets
Planning SAN connectivity (Fibre Channel / Ethernet)
Setting up redundant network paths
Ensuring compatibility with existing switches and hosts
Proper planning prevents common connectivity problems such as:
host access failures
misrouted traffic
management interface inaccessibility.

Controller Board
The VSP 5600 controllers use upgraded blades featuring dual 10-core Cascade Lake CPUs and two Compression Accelerator Modules per controller, hardware not present on the VSP 5500 controllers, delivering significantly higher processing and ADR offload capabilities.
DKC Power Supply (DKCPS)
A non-disruptive Data-in-Place upgrade from VSP 5500 to VSP 5600 requires swapping each VSP 5500's DKCPS units for the VSP 5600-specified power supplies, as the newer models use a different PSU design.