You are probably already familiar with the more common JFS features. The other file systems we are familiar with, HFS and NFS, do not offer an abundance of mount options. However, JFS does offer quite a set of mount options. Since snapshot file systems are merely mounts, let's also take a peek at an interesting mount option that will simplify the deployment of snapshot file systems. Available JFS mount options balance performance and integrity.
Several options are available to control the intent log.
Another of these options controls cache behavior and has several arguments of its own. To round things out, there are a couple of options that do not fit into either of those categories. As its name indicates, log enables full logging. Delayed logging, delaylog , may result in a performance boost at the risk of non-essential metadata. Basically, some system calls will return before the change is written in the intent log.