A feature added in NexentaStor 3.1.4 is the ability to configure IP Multipathing (IPMP) groups via the management console (NMV) rather than having to drop to the shell and configure it manually.
IPMP has two purposes: fault-tolerance and outbound traffic load spreading. While there’s a lot of overlap between Link Aggregation and IPMP, there are some key differences. For more on that, you can read Nicolas Droux’s great write up:
By default, NMV created IPMP groups with link based failure detection rather than probe based. Link based detection is lighter than probe based as it relies on the lower level detection link state rather than a test IP address.