- Group 3 of storages into raid0 array, move data directory to the raid0, and commit log - to the 4th left storage.- As far as I understand, separation of commit log and data directory should make performance better - but what about separation the OS from those two - is it worth doing?
- What are the steps to perform such migration? Will it be possible to perform it without downtime, restarting node by node with new configuration applied?
I'm especially worried about IP changes, when we'll uprade the instance type. What's the recomended way to handle those IP changes?