Has the installation\upgrade of the BMC ( https://mysupport.netapp.com/NOW/download/tools/serviceimage/30803872_ontap/) impact on production data ( NFS ) ?
In the article it is not mentioned that it could be disruptive.
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It shoud normally be non-disruptive. But as general recommendations, any work on production equipment should happen during scheduled maintenance window where accidental downtime can be tolerated.
Re: BMC firmware installation
3 weeks ago
Think of the SP/BMC as a separate computer on the motherboard. That's what I tell customers. It has connectivity to the main FAS unit to do certain things, but it really is a secondary computer.
+1 to Paul's comment.
Upgrading service processors (SP) or baseboard management controllers (BMC) on FAS/AFF is nondisruptive to system data-serving operations, barring unforeseen issues.
It's always a great idea to reboot the SP or BMC before you perform any firmware upgrades (which is also nondisruptive). It potentially resolves any lingering/hidden issues that may exist and puts the SP/BMC in a "fresh" operating state for the maintenance. It's also a useful way to find out if there are any issues between ONTAP and the SP/BMC before you perform the upgrade.