> Ed Heron <Ed at heron-ent.com> wrote: > Yes, in a test environment, I am mirroring a Logical Volume with a RAM > disk to increase the perceived speed of the disk. I'm expecting to > convert a live guest to this type of setup, this weekend. > > I was asking 2 questions. > 1. Should I expect a significant increase in speed in a real world > environment? With enough RAM, a good caching system will eventually do > a similar function. This is almost like pre-loading a cache. > 2. Should I document the process for others? I'm using CentOS 5 now, > which is on it's way out, but I would update the documentation to > include CentOS 7 when I upgrade my servers. > See this is where I was confused. Would not the LVM mirror have to sync all the time with the disk anyways? Is there something about LVM mirroring that can handle disks of different speeds?