For System Manager to discover storage systems, you must ensure that the SNMP protocols SNMPv1 and SNMPv2c are enabled and an SNMP community is created on the storage system.
SNMPv1 and SNMPv2c protocols are less secure compared to SNMPv3 protocol. In storage systems running Data ONTAP 8.1 or later, SNMPv1 and SNMPv2c protocols are enabled by default. In storage systems running clustered Data ONTAP 8.2 or later, SNMPv1 and SNMPv2c are disabled by default. SNMPv2c is enabled when an SNMP community is created.
You must use the command-line interface (CLI) to enable SNMP because System Manager does not support enabling SNMP. After the discovery of controllers by using SNMP, you require NetApp Manageability SDK credentials to effectively manage the controllers.