The blogs in this series on clustered Data ONTAP 8.3 are focused on the new features that enhance nondisruptive operations and efficiency. One of the key new features is IPspaces.
IPspaces allow storage virtual machines (SVMs) in the same cluster to have overlapping subnets and IP addresses. A single IPspace can contain one or multiple SVMs. A cluster can have a separate IPspace per SVM if needed, or all the SVMs in a cluster can exist in the “default” IPspace if you don’t need to accommodate overlapping address spaces.
The benefit of IPspaces is reduced complexity of network and tenant administration. The network multi-tenancy provided by IPspaces is equivalent to that provided by 7-Mode systems running NetApp MultiStore software with vFiler units. So if you’re currently running 7-Mode and MultiStore, clustered Data ONTAP 8.3 with IPspaces is transition ready.
Common use cases include service provider environments where controlling customer subnet assignments is difficult, mergers and acquisitions where pre-existing subnet assignment overlap and migration from 7-Mode MultiStore environments.
Figure) IPspaces allow different SVMs to utilize overlapping address spaces. In this example the IP addresses 10.98.7.1 and 10.98.7.2 are used in both IPspaces.
IPspaces support IPv6 as well as IPv4.