| 摘要 |
PROBLEM TO BE SOLVED: To achieve the backup of a computer in an inexpensive manner, and secure the security and the availability.SOLUTION: A computer of a plurality of computer designated for backup includes group sorting means which sorts the computers of the plurality of computers other than the computer designated for the backup into a plurality of groups each composed of the plurality of computers, and data allocation means which allocates data stored in the computer designated for the backup to each of the groups as well as separates the data and makes the separated data be dispersedly stored in the plurality of computers in each of the groups. |
