Method and device for realizing access of HBA (Host Bus Adapter) card to SATA (Serial ATA) disk in SAS (Serial Attached Scsi) storage system
A storage system and disk technology, applied in the direction of electrical digital data processing, instruments, input/output to record carrier, etc., can solve the problems that SATA disk only supports single channel, SATA disk 204 access exception, preempting HBA card access channel, etc.
Active Publication Date: 2016-01-20
北京书生信息技术有限公司
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Problems solved by technology
[0005] However, in practice, when a SATA disk is connected to a SAS domain, if multiple HBA cards are connected to the SAS domain at the same time, there will be a problem of preemption: compared to SAS disks, SATA disks only Support single channel, that is, only one HBA can access the disk at the same time
When the HBA card 206 is accessing the SATA disk 204, there is an access channel 214 between them, if another HBA card 205 is inserted at this moment, then according to the driver program of the existing HBA card, it will try to set up the HBA The data links between the card and all SATA disks will preempt the access channel between the HBA card 206 and the SATA disk 204, resulting in interruption of the existing data link between the HBA card 206 and the SATA disk 204, resulting in abnormal access to the SATA disk 204
Method used
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[0018] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure are shown. These embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0019] Various implementations of the present invention will be described in detail below by way of examples with reference to the accompanying drawings.
[0020] refer to image 3 , which shows a flowchart of a method 300 for implementing an HBA card to access a SATA disk in a SAS storage system in various embodiments of the present invention.
[0021] In step S310, the identifier of the HBA card and the identifier of at least one SATA disk in the SAS storage system are acquired.
[0022] In step S32...
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The invention relates to a method and device for realizing an access of an HBA (Host Bus Adapter) card to an SATA (Serial ATA) disk in an SAS (Serial Attached Scsi) storage system. The method comprises: obtaining an identifier of the HBA card and an identifier of at least one SATA disk in the SAS storage system; accessing to a white list comprising the identifier of the HBA card and the identifier of the SATA disk, so that a white list item associated with the HBA card can be conveniently obtained, wherein the white list is configured to enable one SATA disk in the at least one SATA disk to be accessed by only one HBA card at the same time; and according to the obtained white list item, enabling the HBA card to access to the SATA disk, located in the white list item, in the at least one SATA disk. According to the method and device provided by embodiments of the invention, the problem of SATA disk preemption possibly occurring during redundant backup of HBA cards in SAS domains is solved.
Description
technical field [0001] The present invention relates to the technical field of data storage, and more specifically, relates to a method and a device for realizing an HBA card accessing a SATA disk in a SAS storage system. Background technique [0002] SAS (Serial Attached SCSI, Serial Attached SCSI) is a new generation of SCSI (Small Computer System Interface) technology, which is the same as the popular SATA (Serial ATA, Serial ATA) disk, and uses serial technology to obtain higher data transmission. speed, and benefits such as improved interior space through shorter hitch lines. The SAS interface technology is backward compatible with SATA, that is, SAS disks or SATA disks can be installed on the SAS interface. SATA disks are cheap, but SAS disks are not cheap, so SATA disks are preferred to replace expensive SAS disks when implementing storage solutions. [0003] In a SAS storage system, terminal devices, including disks and host adapters (also called HBA cards), are co...
Claims
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IPC IPC(8): G06F3/06G06F13/16
CPCG06F3/06
Inventor 金友兵宋瑞霞莫仲华
Owner 北京书生信息技术有限公司