Cross-Cluster Live Migration (CCLM) is an advanced feature that allows a running VM to move between two clusters without downtime, provided they are linked by synchronous replication. However, CCLM has specific technical prerequisites and limitations regarding the VM ' s hardware configuration. One of the primary constraints in many Nutanix versions is the support for specific disk controllers.

In many CCLM implementations, the migration engine requires the VM to use modern VirtIO controllers for its disks to ensure that the memory-state transfer and storage-handoff can occur seamlessly across clusters. If MarketVM was configured with legacy SCSI controllers (or certain types of shared disks), the migration task might fail during the validation phase. While storage capacity (Option B) and bandwidth (Option C) are essential for general replication, they would typically prevent the " Synchronous " status from being achieved in the first place, rather than failing a CCLM task specifically. Memory overcommit (Option D) is generally handled by the hypervisor and would not inherently block the migration unless the destination host had zero available physical memory. Troubleshooting CCLM requires an administrator to audit the VM ' s virtual hardware against the supported Nutanix compatibility matrix to ensure all components are eligible for live cross-site movement.