Method and device for realizing hba card accessing sata disk in sas 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 problems such as preempting the access channel of the HBA card, SATA disk only supports single channel, and interrupting the data link of the HBA card.
Active Publication Date: 2018-06-22
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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A method and device for implementing an access of an HBA card to a SATA disk in a SAS storage system. The method comprises: acquiring an identifier of an HBA card and an identifier of at least one SATA disk in a SAS storage system (S310); accessing a whitelist containing the HBA card identifier and the SATA disk identifier, so as to acquire a whitelist item associated with the HBA card (S320), wherein the whitelist is configured in a way that one SATA disk in the at least one SATA disk can only be accessed by one HBA card at one time; and enabling, according to the acquired whitelist item, the HBA card to access a SATA disk in the whitelist item from the at least one SATA disk (S330). The present invention addresses the SATA disk occupation problem likely to occur when implementing redundancy of an HBA card in a SAS domain.
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 Faster data transfer speeds and improved internal space through shorter connecting wires. 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 connected to...
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