How to migrate volumes between 2 groups of equalogic

Hello,

I have 2 groups of equalogic. One group with 2 PSM4110 which have end of warranty in 5 months and a second group with 2 new PS6210X.

For VMware , ii  is not a big  problem because there is a vmotion.

But I have 2 physical servers .Each server has 2 volumes  on the first group.

My question ; how to migrate these volume from the first group to the second group.The 2 servers can be stopped during the opearation  .In one  server , i have Tivoli storage manager  installed  ( database data , database active log and storage pool ) .

Thanks

Sincerely

Lanto R.