SAN Fabric Migration

A SAN fabric migration, on the physical side, is the move of Fibre Channel switches, optics and fiber cabling that connect servers to storage. We label every port and cable, de-install and pack Brocade and Cisco MDS switches, transport them, and re-cable to your documented port map. Your storage team owns zoning, configuration and path testing.

What does the physical side of a SAN fabric migration involve?

It covers everything you can touch. Before the move we walk the fabric with your storage team and label each switch, each port, each SFP and both ends of each fiber patch. We photograph the front and rear of every switch and patch panel and record which cable goes where on a port map your team checks and signs. On move day, after your team has saved its switch configurations and released the hardware, we remove optics and bag them by port, cap every fiber end, coil cables within their bend-radius limits, and de-install the switches. At the destination we rack the switches to the new elevation, re-insert optics in their recorded ports, and re-connect every fiber to the signed map. We then power on and confirm that port lights come up where the map says they should. Our cable documentation guide shows the labeling format we use so the map still makes sense years later.

Can you move a SAN fabric without losing storage access?

Often yes, if the hosts and arrays have two independent fabrics, usually called Fabric A and Fabric B. In that design every server reaches its storage through both fabrics, so one fabric can be moved while the other carries the traffic. Whether that is safe in your environment is a decision for your storage team, because it depends on multipath settings on every host and on zoning that we never touch. If your team approves a split move, we run two waves. In the first, we move Fabric A while Fabric B stays live. Your team confirms paths are healthy, then releases Fabric B for the second wave. Each wave has its own labels, map and sign-off, and the two fabrics never share a vehicle. Our article on migrating SAN fabrics with path redundancy explains how path redundancy makes a split move possible. If the fabric has only one path, the move needs a planned outage.

How are switches, optics and fiber protected in transit?

Optics and fiber ends are the fragile parts. A scratched or dusty connector can cause link errors that look like a configuration problem, so we cap every fiber end and every empty port before anything moves. Optics travel in anti-static bags labeled with their switch and port, inside a padded case. Fiber patches are coiled loosely within the manufacturer’s bend radius and bagged by switch. Switches are packed in anti-static, foam-lined cases and moved on air-ride, climate-controlled vehicles with signed chain-of-custody handoffs. At the destination we let the equipment reach room temperature before power-on, following ASHRAE Technical Committee 9.9 guidance, and we clean and inspect connectors before mating them. For runs that extend beyond the rack, our guide to fiber optic infrastructure relocation covers trunk cables and longer runs. We ask your team to keep spare optics on hand, so one damaged part does not stall the re-cable.

What does DataTech handle, and what does your storage team handle?

We handle the hardware and the cabling. Your storage team handles every setting inside the switches and every test that proves hosts can reach their storage. The split below goes into the move plan before any date is set.

Task	Who handles it
Port, SFP and fiber labeling	DataTech
Port map review and sign-off	Your storage team
Switch configuration and zoning saves	Your storage team
De-install, packing, transport	DataTech
Re-rack, optics, re-cabling to map	DataTech
Power-on and port-light check	DataTech
Zoning, ISLs, domain IDs, multipath tests	Your storage team

We never log in to a switch. Our work ends when every switch is racked, every cable matches the map and every expected port light is on. Your team then confirms that hosts see their storage on both paths, and we stay on site to fix anything physical it finds.