STORAGE SYSTEM, METHOD, AND APPARATUS FOR PROCESSING OPERATION REQUEST

摘要

According to a storage system, method, and apparatus for processing an operation request provided by embodiments of the present invention, a controller directly encapsulates a SCSI protocol operation request into an Ethernet operation request packet at the MAC layer instead of using the TCP/IP protocol layer and a disk enclosure decapsulates the Ethernet operation request to obtain the SCSI protocol operation request and sends the SCSI protocol operation request to a target disk, thereby reducing layers of encapsulation, reducing a processing delay of the storage system, and improving performance of the storage system.

主权项

1. A storage system for processing an operation request, wherein the storage system comprises:
a disk enclosure including multiple disks connected in the disk enclosure, wherein each disk in the disk enclosure is connected to the disk enclosure using a Serial Attached Small Computer System Interface (SAS) protocol; and a controller comprising a central processing unit and a back-end adapter, wherein the controller communicates with the disk enclosure using an Ethernet network, wherein the disk enclosure and the back-end adapter each have a media access control (MAC) address, and wherein the back-end adapter stores a correspondence between the MAC address of the disk enclosure and a SAS protocol address of each disk in the disk enclosure; the back-end adapter is configured to:
receive a Small Computer System Interface (SCSI) protocol operation request sent by the central processing unit, wherein the SCSI protocol operation request carries a SCSI protocol transaction identifier of the controller and a SAS protocol address of a target disk;query a correspondence between the MAC address of the disk enclosure and the SAS protocol address of the target disk according to the SAS protocol address of the target disk to obtain the MAC address of the disk enclosure;encapsulate the SCSI protocol operation request into an Ethernet operation request packet; andsend the Ethernet operation request packet to the disk enclosure according to the MAC address of the disk enclosure, wherein the Ethernet operation request packet carries the MAC address of the back-end adapter and the MAC address of the disk enclosure; the disk enclosure is configured to:
receive and decapsulate the Ethernet operation request packet to obtain the SCSI protocol operation request; andsend the SCSI protocol operation request to the target disk according to the SAS protocol address of the target disk.