Do I lose RAID array if I switch RAID controller

If I have a RAID array and I switch out the controller to a newer controller, does this destroy the array?

E.g. I have 6 drives as 1 RAID0 array. If I upgrade the controller to a different one, but don't configure anything, should I be able to plug the old controller back in and the array would be unharmed?

Solution 1:

Depends on the controller.

Modern controllers should take over the RAID between models as they store the RAID config on disc and maintain a compatible metabase. Adaptec for example does it so.

Others can be handcoded to accept the old arrays.

Some can not.

RTFM - read the .... manual - is the only solution here. It is documented there. If not, ask the controllers manufacturer.

Solution 2:

The major enterprise-level vendors use a common metadata format across their own product lines - HP, Dell, Adaptec, 3ware, Areca, LSI, etc - but given the criticality, it doesn't hurt to confirm this with the vendor.

You will not find any compatibility if you cross brands, guaranteed.