Someone recently asked me for advice when their repair time was 2-3 days. I thought that was outrageous, but not unheard of. Personally, to me, 2-3 hours would be about the limit of what I could tolerate, and my personal goal would be that a full repair of a node should take no longer than an hour, maybe 90 minutes tops. But... achieving those more abbreviated repair times would strongly suggest that the amount of data on each node be kept down to a tiny fraction of a typical spinning disk drive, or even a fraction of a larger SSD drive.
So, my question here is what people consider acceptable full repair times for nodes and what the resulting node data size is. What impact vnodes has on these numbers is a bonus question. Thanks! -- Jack Krupansky