It depends on how long. If you have any dbs with low settings for
replication cutoff, then you'd want to be super careful. But I probably
would look at rebuilding the down server from the up one if it's more than
2 or 3 weeks...

On Wed, Jan 6, 2021, 2:16 PM Rob Berendt <rob@xxxxxxxxx> wrote:

I remember reading somewhere that if a cluster member is down for an
extended time, such as a week or so, that bringing it back online can be
dangerous. Meaning something like this:
ServerA is in a cluster with ServerB.
ServerA is dropped for an extended period of time.
Databases on ServerB get new records, etc.

Since ServerA was down so long if you bring it back up resyncing it may
actually drop the new rows or some such thing. It's all a little foggy to
me exactly what the concern was. Maybe it was deletions in ServerB would
get replicated back in from ServerA. This seems more likely.

I tried a google search but apparently I'm not getting the right
terminology to find a related hit.

Rob Berendt
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 7310 Innovation Blvd, Suite 104
Ft. Wayne, IN 46818
Ship to: 7310 Innovation Blvd, Dock 9C
Ft. Wayne, IN 46818

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