Method and System for Improving Cache Performance of a Redundant Disk Array Controller

摘要

An information handling system includes a method, information handling system, and redundant array of independent disks (RAID) controller for improving cache performance. When a write request is received, data are written to a non-volatile memory write cache. When a read request is received, it is determined whether the data are available from a volatile memory read cache. When the data are available from the volatile memory read cache, the data are obtained from the volatile memory read cache and provided in response to the read request. When the data are not available from the volatile memory read cache, the data are obtained from a RAID virtual disk coupled to the RAID controller, the data are stored in the volatile memory read cache, and the data are provided in response to the read request.

主权项

1. A method comprising:
receiving a data transfer request pertaining to data; determining whether the data transfer request is a read request or a write request; when the data transfer request is the write request, writing the data to a non-volatile memory write cache; when the data transfer request is the read request, determining whether the data are available from a volatile memory read cache; when the data are available from the volatile memory read cache, obtaining the data from the volatile memory read cache and providing the data in response to the read request; and when the data are not available from the volatile memory read cache, obtaining the data from a redundant array of independent disks (RAID) virtual disk, storing the data in the volatile memory read cache, and providing the data in response to the read request.