I worked on a pretty big site where we read from the slaves and wrote to the master, but we were still on 4.1 with MyISAM. Given the current size of the iodriv

I worked on a pretty big site where we read from the slaves and wrote to the master, but we were still on 4.1 with MyISAM. Given the current size of the iodrives we would have to shard a lot more than we were, especially for a few large tables. But, it would drastically reduce deployment complexity.