[Samba] Upgrade DC 4.5 -> 4.8, timings?

[Marco Gaiarin]

I've read all docs on upgrades, from wiki to Louis notes, and i think
i'm ready to upgrade.
First step, move from stretch to jessie, and from 4.5 to 4.8, upgrade
in place.

But having a domain with 6 DCs, i'm a bit scared to upgrade all DC in
one turn, and i'm think about something like:

a) upgrade DC with FSMO roles, then wait 1-2 day to spot troubles

b) then upgrade all DC in the site of that DC

c) then upgrade all other sites, one by day.


Can i hit trouble running, i think a week, with some DCs in 4.5 and
some other in 4.8?


Thanks.

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