This is a FreeBSD NanoBSD configuration.
The model I happen to have is a 633724-001 but this should also be suitable for the later N40L based models.
My use case is a general purpose home development box, running NAS services as well as various tools like Artifactory, Hudson/Jenkins, Sonar and that kind of thing.
I'm intending to run multiple application jails, with the 'bare metal' NanoBSD merely providing a base and fundamental features, such as a ZFS pool and networking.
Since the server can house only 4 drives, I'm using a single raidz pool, mounted at /mnt/zpool0.