Yea, let me put some info up here that I've found so far.
There are 2 ways of accessing the management of the devices. The first (NMS - Nexenta Management Server) is hosted on a webserver on the Nexenta device. It allows for the majority of management tasks to be done without jumping into the CLI
The second is the NMC (Nexenta Management Console). It is available via ssh and allows for full administration of the storage device. I was able to find some decent documentation of which commands are available here
(direct link to .pdf hosted on Nexenta's site). It seems to be mostly Unix compatible, although there are some weird issues (for example, throwing a -h at the end of a command will bring up the man pages, which was confusing when doing a df -h...I may have freaked out a little).
Most of that I can stumble through. The issues that I am running into are getting the data to sync between appliances (our main office and the colo). I am not sure where to begin with this and will likely have to engage Nexenta on it. My primary concern is why the system seems so slow. Running tests on virtual servers that are hosted on this shows disk latency and I/O that you would expect to see from a single commodity disk. The array hosting the data is what Nexenta calls a Raidz1. It basically looks like a JBOD consisting of 7 1 gig drives with a formatted space of 6.31TB. The server has 48 gigs of ram with ~40 of that dedicated to caching data. All 40 gigs of that are being used, but benchmarks run on the VM's show at most 90Mb/s of read performance (slow even for a single 1 TB disk) with very little I/O happening on the hypervisor. It's LVM over iSCSI, and I doubt it's a bandwith issue. The metrics available through either the NMC or the NMS have been pretty opaque. I would like to know what data is sitting where (what's eating that 40 gigs of RAM that doesn't seem to be speeding anything up) and why this RAID volume is so slow. My first thought was, looking like a jbod, there wasn't any striping going on. I haven't been able to confirm that one way or the other. Anyone have any thoughts?