Configuration limits for FC, FCoE, and iSCSI configurations
Configuration limits are available for FC, FCoE, and iSCSI configurations. In some cases, theoretical limits might be higher, but the published limits are tested and supported.
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SAN configurations always use FlexVol volumes
Volumes containing LUNs must be FlexVol volumes. SAN protocols can only be used with Vservers with FlexVol volumes. Infinite Volumes are not supported for SAN.
Supported number of nodes for SAN configurations
The number of nodes per cluster supported by clustered Data ONTAP varies depending on your version of Data ONTAP and the protocol of your cluster nodes.
SAN configuration limits
Each system model has configuration limits for reliable operation. The values listed are the maximum that can be supported. Do not exceed the tested limits.
SAN configuration limits specifically for the FAS2220
The FAS2220 has configuration limits for reliable operation. The values listed are the maximum that can be supported. For best performance, do not configure your system at the maximum values. Do not exceed the tested limits.
FC switch configuration limits
Fibre Channel switches have maximum configuration limits, including the number of logins supported per port, port group, blade, and switch. The switch vendors document their supported limits.
Calculating queue depth
You might need to tune your FC queue depth on the host to achieve the maximum values for hosts per controller and FC port fan-in. The maximum number of LUNs and the number of HBAs that can connect to an FC port are limited by the available queue depth on the FC target ports.
