| 摘要 |
PROBLEM TO BE SOLVED: To reduce a data transmission amount when disk data of a transfer source and a transfer destination matches (for example, utilization of a shared disk or NFS (Network File System)).SOLUTION: When a disk is shared in systems of a transfer source and a transfer destination, a page cache address of a page cache which stores read disk data among memory of a virtual machine is acquired, bits other than the page cache are set, the memory is transmitted to the transfer destination until a remaining memory amount becomes a prescribed value or less, the virtual machine is stopped when the remaining memory amount becomes the prescribed value or less, and the page cache whose data exists in the disk is cleared. |
