Comment by jasonwatkinspdx

It's clear you're ignorant of the capabilities netapp filers had, even back then.

WAFL uses copy on write trees uniformly for all data and metadata. No currently live block is ever modified in place. By default a checkpoint/snapshot is generated every 10 seconds. NFS operations since the last checkpoint are written into NVRAM as a logical recovery log. Checkpoints are advanced and reclaimed in a double buffering pattern, ensuring there's always a complete snapshot available for recovery. The filer hardware also has features dedicated to operating as a high availability pair with nearly instant failover.

The netapp appliances weren't/aren't perfect, but they are far better than you're assuming. They were designed to run 24/7/365 on workloads close to the hardware bandwidth limits. For most of the 2000's, buying a pair of netapps was a simple way to just not have issues hosting files reliably.

Perhaps you should take your own advice and dial back the arrogance a bit.