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This section describes how to:
The following figure shows basic metro node storage provisioning:
The storage volumes, the LUNs of the underlying physical storage system, are at the bottom of the figure. Volumes are split into extents, which can be used for device partitioning. One or more extents are combined into devices using a certain RAID technique. Metro node supports both Local RAID 1 and Metro Distributed RAID 1 device structures, while 1:1 mapping creates one device for every extent. Virtual volumes are created from the top-level devices and exported to the hosts.
Note: Because performance is crucial, Dell Technologies recommends only a 1:1 mapping of storage volumes to extents and a 1:1 mapping of extents to devices with SAP HANA.
The following figure shows an example of a metro node virtual volume configuration:
The ports of the metro node front-end are used with the registered host initiators for building storage views to make virtual volumes available to the hosts. Storage views provide full control over the LUN visibility.