Patent ID: 11868367
Assignee: HITACHI, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. The information processing method according to claim 11,
wherein the access frequency information is a first number of accesses by the host to the storage apparatus with respect to each data ID for identifying data and a second number of accesses by the host to the storage apparatus with respect to each host and each data ID; and
wherein in the copy data judgment step, the information processing apparatus calculates:
an access rate which is a ratio of the first number of accesses for each data ID to a total sum of the first number of accesses;
access locality which is a ratio of a total sum of the second number of accesses for each auto-scaling host, which is the host belonging to an auto-scale group of the target system to be resumed, and for each data ID to the total sum of second number of accesses for each data ID; and
access shareability which is a ratio of a total sum of the second number of accesses for each host of the target system to be resumed and for each data ID to the total sum of the second number of accesses for each auto-scaling host; and
judges that data with the data ID regarding which at least any one of the access rate, the access locality, and the access shareability exceeds their judgment threshold, is the object data.