Understanding multi-tenancy

Server and Cluster Administration Guide for Hitachi NAS Platform

Part Number

Multi-tenant architecture provides companies, such as application service providers (ASPs), the ability to support more than one customers' services on a single server, but still keep them logically separate.

In an HNAS server implementation, this architecture is sometimes called real EVS separation.

Note: The ASP has the responsibility of managing the storage, file systems, shares, and exports to which each tenant has access.
HNAS multi-tenancy configuration mode provides enhancements to the previous stand-alone mode in the following ways:
  • Supports tenant configurations in logically separate serving environments on a single physical server or cluster.
  • Extends HNAS individual security mode to provide true separation by maintaining per-EVS variables and connection states.
  • Supports serving environments for tenants with single or multiple EVSs, configured separately and possibly sharing file serving interfaces.
  • Provides per-EVS IP routing and networking settings to support duplicate or overlapping server IP addresses. Includes support for both IPv4 and IPv6.
  • Helps detect and prevent EVS crosstalk that can occur when duplicate IP ranges are used. EVS crosstalk can lead to server unresponsiveness.
  • Provides CLI EVS context usability improvements.

See the following example of an HNAS multi-tenancy setup:

Figure. HNAS multi-tenancy