DRBD equivalent for FreeBSD?

[Miguel]

Hi, im trying to implement a cluster using freebsd , heartbeat and 
postgres, i dont want to replicate the databaases using slony or 
similar, i want to mirror the storage, i have a hp msa500 with two set 
of arrays 1+0, i read on the linux-ha that it works fine on freeesd, but 
the DRBD software is oinly for linux, i want to use a similar solutions 
for replicate the data sets, whgat alternative do i have?


*http://www.drbd.org/*

---
thanks