SAN Configuration Guide
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- Deciding whether to use the SAN Configuration Guide
This guide describes supported FC-NVMe, FC, and iSCSI topologies for connecting host computers to nodes, and lists supported limits for SAN components. - Considerations for iSCSI configurations
You should consider several things when setting up your iSCSI configuration. - Considerations for FC-NVMe configurations
Beginning with ONTAP 9.4, the non-volatile memory express (NVMe) protocol is available for SAN environments. FC-NVMe allows you to run NVMe over an existing FC network with an AFA system. FC-NVMe uses the same physical setup and zoning practice as traditional FC networks but allows for greater bandwidth, increased IOPs and reduced latency than FC-SCSI. - Considerations for FC configurations
You should be aware of several things when setting up your FC configuration. - Fibre Channel zoning
An FC or FC-NVMe zone is a logical grouping of one or more ports within a fabric. For devices to be able see each other, connect, create sessions with one another, and communicate, both ports need to have a common zone membership. Single initiator zoning is recommended. - Requirements for shared SAN configurations
Shared SAN configurations are defined as hosts that are attached to both ONTAP storage systems and other vendors' storage systems. Accessing ONTAP storage systems and other vendors' storage systems from a single host is supported as long as several requirements are met. - Host support for multipathing
ONTAP always uses Asymmetric Logical Unit Access (ALUA) for both FC and iSCSI paths. Be sure to use host configurations that support ALUA for FC and iSCSi protocols. - Configuration limits for FC and iSCSI configurations
Configuration limits are available for FC and iSCSI configurations. In some cases, theoretical limits might be higher, but the published limits are tested and supported. - Considerations for SAN configurations in a MetroCluster environment
You must be aware of certain considerations when using SAN configurations in a MetroCluster environment. - Where to find additional information
You can learn more about the tasks and concepts described in this guide in Lenovo's extensive documentation library. - Contacting Support
You can contact Support to obtain help for your issue. - Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area.
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