COMPUTER REALIZING HIGH-SPEED ACCESS AND DATA PROTECTION OF STORAGE DEVICE, COMPUTER SYSTEM, AND I/O REQUEST PROCESSING METHOD

摘要

In a computer, a logical partition for calculation in which an OS and an application operate and a logical partition for storage for providing a storage function are constructed. In the logical partition for calculation, a device corresponding to a storage device is provided, while the logical partition for storage provides a volume. A memory space that can be shared by the both logical partitions is prepared, and management information describing a sorting destination or a sorting method of an I/O request issued by an application is provided in the memory. If the logical partition for calculation receives an I/O request from the application, the partition refers to the management information and sorts the I/O request to the storage device or the logical partition for storage. The logical partition for storage processes the received I/O request by the storage function and transmits the result to the storage device.

主权项

1. A computer system comprising:
a CPU and storage devices providing RAID (Redundant Array of Inexpensive Disks) areas, in which data is stored with RAID configuration and Raw areas, which are accessed directly and in which data is stored without RAID configurations, wherein the CPU is configured to: provide at least a first logical partition and a second logical partition by partitioning physical resources including the CPU and the storage devices, wherein CPU resources allocated to the first logical partition are configured to: provide one or more virtual devices to an application, receive a first I/O (input/output) request from the application and access the Raw area based on the first I/O request, receive a second I/O request form the application and transmit a request to the second logical partition based on the second I/O request, wherein the CPU resources allocated to the second logical partition control access to the RAID area with RAID control function.