Things got pretty crazy, but it all came through in the end. Users are satisfied thus far. Heck, I've got time to eat lunch and post here.
We definitely should have started with a smaller batch than 132 accounts (more than a dozen of them > 1GB). A pilot migration of 26 accounts in February (before the DST bug came up) gave me what turned out to be a false sense of confidence. Also, while it fixed a huge number of things over 4.5.10 and 5.0.1, ZCS 5.0.2 seems to have made some convertd attachment indexing behavior (hence migration import speed) worse. Some of the convertd changes are being changed/rolled back for the upcoming 5.0.3.
Next weekend's batch of 100-some accounts, and your experience a few weeks hence, should be much more pleasant.
If you have the means to hire professional services to take the graveyard shift, I *highly* recommend it. It's really nice to be able to let a qualified person whose normal waking hours exactly match your normal sleeping hours take over. I'm really thankful that this isn't the weekend that the undersea cables to India broke.  |