Lori,
ndmpcopy is not going to work. You can establish the snapmirror relationship while the files are co-located tho. Another option is snapmirror to tape.
You can alway throttle snapmirror. Check the documentation for it on how to do it. Another thing you're going to want to look at is the snapmirror window size. The default window size is rather larger than what's appropriate for a WAN.
As far as encryption goes, I thought you said you would be using a VPN, which presumably would take care of that.
Lastly, if the data's already on a filer, then you can estimate the amount of bandwidth it will require by snapshotting on the same schedule you plan to do snapmirror updates. Then you can do the math with snap delta (assuming you're running 7.x). Remember to account for some amount of network overhead to account for packet headers and retransmits and such.
--paul
On 11/10/05, Lori Barfield itdirector@gmail.com wrote:
ah yes, sorry that i didn't mention this point...we're doing an initial ndmpcopy over a little gig switch here at the office before moving the filer to the colo.
some of our data is going to be large image files, so we aren't sure yet how much bandwidth the syncs are going to want. i was more concerned about the jerks and jolts and irregular paths you get when you fling data out into the wild...not sure how well netapps handle hiccups in the middle of snapping.
...lori