Abstract: A method and apparatus for detecting soft errors in a storage subsystem is provided. Write data generated for a write operation in a first controller is concurrently generated in a second controller and written to a storage device by the first controller. Soft errors are detected by comparing the two sets of write data by comparing respective checksums or the write data read back from the storage device by the second controller.

Abstract: A method and apparatus for detecting soft errors in a storage subsystem is provided. Write data generated for a write operation in a first controller is concurrently generated in a second controller and written to a storage device by the first controller. Soft errors are detected by comparing the two sets of write data by comparing respective checksums or the write data read back from the storage device by the second controller.

Abstract: A device and method to enable a plug and play operating system to load the appropriate device for either a SCSI I/O device or a RAID adapter and direct interrupts from storage devices to the appropriate device driver. This device and method has a SCSI I/O device connected to several storage devices. The SCSI device can generate several interrupt signals and an identification selection signal. Further, this device and method has a PCI slot, to accept a RAID adapter, connected to the SCSI I/O device. The PCI slot can receive and generate several interrupt signals, as well as an interrupt disable signal, and an identification disable signal. Several tristate units are connected to the interrupt signals from the SCSI I/O device, the identification selection, the interrupt disable signal, and the identification disable signal.