| 摘要 |
PROBLEM TO BE SOLVED: To improve the data processing performance accompanied with drive access and to construct a large-capacity disk subsystem which can perform a high-speed process by using a disk drive as an access-only drive. SOLUTION: B-CU 102 loads data from B-VOL 103 to its cache memory 111 and transfers the data to a cache memory 107 of W-CU 104. When data are present at W-VOL 105, the data are loaded from W-VOL 105 to the cache 107 of W-CU 104 and processed. Thus, the data are loaded to the cache memory 107 and then the data discarded from the cache memory are destaged to W-VOL 105 through the LRU management of the cache. At this time, the logical address relation between B-VOL 103 and W-VOL 105 is stored in an address conversion table.
|
