A customer is planning to migrate a financial application to a 12-way p5-570 system with 96GB of memory.  The application data is stored on an ESS Model 800 attached to a p670 server with AIX 5.2.  They will have a short outage window to perform the data migration.  What is the quickest way to move all the data stored on the attached ESS from the p670 to the new p5-570？（）

• A、Use rsync to synchronize the data across servers.
• B、Use exportvg and importvg to move the data to the target system.
• C、Use NFS to copy the data from the source system to the target system.
• D、Backup the data from the source system and restore to the target system.