A VNX customer has several LUNs that are experiencing some performance issues. They understand the application profile uses small-block, write-intensive, random I/O. The customer uses snapshots for…

A VNX customer has several LUNs that are experiencing some performance issues. They understand the application profile uses small-block, write-intensive, random I/O. The customer uses snapshots for these LUNs and the bandwidth to the RLP LUNs far exceeds bandwidth to the source LUNs. Based on best practice, what is the maximum change rate percentage recommended if snapshots are used on the LUNs?