Skip to main content
Sign Out

Welcome to Dell

My Account
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Create and access a list of your products
Sign In Create an Account Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Baskets

RDMA disconnects in a switchless storage network topology

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms


Observations

In an Azure Stack HCI using switchless storage network toplogy, when the cable is disconnected and reconnected, most of the time, RDMA sessions immediately get established in 1 direction and may be slow (up to a day) to come up for the other direction. However, sometimes, RDMA sessions may not get established in either direction.

 

Impact and Resolution

Cluster storage networks fall back on to TCP for all communication and it may impact performance if RDMA does not get established automatically.

 

To reestablish RDMA sessions, you can manually disable and re-enable the adapters using PowerShell

Disable-NetAdapter -Name 'Storage Adapter Name'

Enable-NetAdapter -Name 'Storage Adapter Name'

Affected Products

Storage Spaces Direct R440 Ready Node, Storage Spaces Direct R640 Ready Node, Storage Spaces Direct R740xd Ready Node, Storage Spaces Direct R740xd2 Ready node
Article Properties
Article Number: 000133598
Article Type: Solution
Last Modified: 21 Feb 2021
Version:  3
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.