PURPOSE: To transfer data between a cache memory and a host processor without waiting for the destage end of a slot in the destage when an input/output request is generated from the host processor to the slot.
CONSTITUTION: This disk cache input/output control system is provided to request access from a high-order channel parallel to the destage even when a slot 36a in a cache memory 36 containing data, to which the access is requested from the high-order channel, is under destaging by setting slot managing information 1 storage part-3 storage part 32b4-32b6 concerning the destage to a slot managing table 32b2 in a cache directory 32b. Therefore, since data can be transferred between the host processor and the cache memory without waiting for the destage end, the throughput of the system can be prevented from being lowered.
| JP2010009206 | RECORDING CONTROL DEVICE |
| JPS62184665 | MAGNETIC DISK DEVICE |
Shoji Isaka
Eri Mori
Morihiko Yotsuya
Honma Shigeo
日立ソフトウエアエンジニアリング株式会社