best would be to use your existing 10GBe for MPIO, and add 10GBe for replication with active / active
best would be to use your existing 10GBe for MPIO, and add 10GBe for replication with active / active
In case you are going to use it with one switch, then 4 is enough, but in case you are going to use it with 2 switches, then using 5 NICs is the minimum requirement (must use 5 or more).