DATA STORAGE SYSTEM, DATA STORAGE METHOD, AND RECORDING MEDIUM ON WHICH PROGRAM OF DATA STORAGE METHOD IS RECORDED

摘要

PROBLEM TO BE SOLVED: To realize data transfer at a high speed and with high reliability regarding a data storage system, a data storage method and a recording medium on which a program of the method is recorded. SOLUTION: D is calculated (S2), whether D is an integer or not is judged (S3) and when it is an integer, stripe depth is defined as D (S6). When D is not an integer, the minimum integer to exceed D is defined as the stripe depth (S4). NULL data is added to data and the number of blocks to be written by every library storage device is equalized (S5). Parity is calculated and a redundant group is constructed (S7). A recording medium to constitute a logical medium in which a free capacity required for writing data exists is loaded in a drive device (S8). Each data block is written in the loaded drive device (S9). A number of a logical storage medium and the total space of the data used for writing are stored (S10).