without something like GX or an acopia switch you cannot achieve full transparency. it should be pretty quick with snapmirror though unless you are migrating 300+ volumes.
you could always pull the fire alarm right before the cutover and quickly do the final sync and cutover while everyone is evacuating the office...
:)
-- Daniel Leeds Manager, Storage Operations Edmunds, Inc. 1620 26th Street, Suite 400 South Santa Monica, CA 90404
310-309-4999 desk 310-430-0536 cell
-----Original Message----- From: owner-toasters@mathworks.com on behalf of Simon Vallet Sent: Mon 7/28/2008 3:08 AM To: toasters@mathworks.com Subject: Migrating data without service interruption : 3020 -> 3140
Hi,
we just received a new 3140 cluster here to upgrade an existing 3020c production filer. And now we're looking for a way to migrate the existing data (~18TB) with the least possible downtime.
Ideally, we would use SnapMirror to copy the data on the new filer and then transparently (for clients) switch the production system, similarly to what happens when a cluster member fails over to the other member. But we don't know if this is possible.
So the questions are: - do you think such a procedure could be successful ? - do you have any other ideas to migrate the data without service interruption ?
Cheers, Simon