the OS and application should already be pre-installed on the SNS-3595 physical appliance. That includes the RAID 10 setup.
CIMC should be a a separate VLAN but it doesn't have to be.
The CIMC has its own network setup and doesn't interact directly with the Linux running under ISE so it's not a technical conflict if they are on the same VLAN / subnet but rather a policy and operations issue.