Hello, For the purposes of migrating from the old arrays to the new one, upgrading the current arrays and adding in the new 6210s would be the best option. You won't get hardware support of the old arrays of course but upgrading firmware is a very low risk operation. If you already have the 6210's you can open a support case against them and ask for a health review of the current group. Then you can upgrade the arrays and add in the 6210. Put the 6210 into its own pool, and build the RAIDset and configure the other interface. Then once it completes you can move it into the other pool. Then one at a time move the first 6000 out to the temp pool. Once that completes, THEN delete it from the group. Repeat for the other 6000. Same for the group the 4100. Regards, Don

Hi Don, Thanks for your reply, I will suggest again this approach to the customer. They are not confident about the firmware upgrade task, but if I'll confirm that is a low risk operation, I hope they will change their mind. If any other solution came to your mind, please let me know. Kind regards Danibett

Hello, Just using host based software then. Which can be slow and require a small outage as you move everything to the new group. Regards, Don