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NVMe over RoCE restrictions

Before using NVMe over RoCE, review the controller, host, and recovery restrictions.

Verify your configuration​

Verify your configuration, using the Lenovo Interop Matrix.

About the hardware​

NVME over RoCE can be configured for the DE6000H or DE6000F 64GB controllers. The controllers must have 100GB host ports.

Restrictions​

The following restrictions are in effect for the 11.60.2 release. See the Lenovo Interop Matrix for a complete list of requirements.

Controller restrictions​

  • This protocol can be used only for DE6000H or DE6000F controllers. A minimum of 64 GB of physical memory is required to use the protocol on DE6000H or DE6000F controllers. If the minimum memory requirements for the controllers are not met during start of day operations, a message is displayed that helps you diagnose the problem.

Switch restrictions​

Attention
RISK OF DATA LOSS. You must enable Priority Flow Control or Global Pause Control on the switch to eliminate the risk of data loss in an NVMe over RoCE environment.

Host, host protocol, and host operating system restrictions​

  • The host must be running SUSE Linux Enterprise Server 12 SP5 or later and RedHat 8.1 or later operating system. See the Lenovo Interop Matrix for a complete list of requirements.
  • For a list of supported host channel adapters see the Lenovo Interop Matrix.
  • In-band CLI management via 11.50.3 SMcli is not supported in NVMe-oF modes.

Storage and disaster recovery restrictions​

  • Asynchronous and synchronous mirroring are not supported.
  • Thin provisioning (the creation of thin volumes) is not supported.