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A jbod cascade system

A cascading system and expansion card technology, applied in the storage field, can solve the problem of insufficient bandwidth and achieve the effect of improving load efficiency

Active Publication Date: 2020-11-20
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is actually found that although the total back-end IO bandwidth has been improved, it is not directly proportional to the number of SAS channel card ports actually used. For example, when one SAS channel card port is used, the total back-end IO bandwidth is 2.0GBps; using 2 When there are two SAS channel card ports, the total back-end IO bandwidth is generally 2.5GBps-3.0GBps, which cannot reach double the bandwidth

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] The embodiment of the present invention discloses a JBOD cascade system (JBOD, Just a Bunch Of Disks, disk cluster), see figure 2 As shown, the system includes a SAS channel card 11 and a SAS expansion card set 12 connected to the SAS channel card 11. Using the SASZoning partition technology, the hard disk set of each SAS expansion card 13 in the SAS expansion card set 12 is divided into multiple partitions , each partition includes a hard disk subset,...

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Abstract

The application discloses a JBOD (Just a Bunch Of Disks) cascade system. The system includes an SAS (Serial Attached SCSI) channel card and an SAS expansion card set connected with the SAS channel card. An SASZoning partitioning technology is utilized, a hard disk set of each SAS expansion card in the SAS expansion card set is partitioned into a plurality of partitions, each partition includes a hard disk subset, and each partition corresponds to a port of the SAS channel card. According to the SAS channel card and the SAS expansion card set connected with the SAS channel card of the application, the SASZoning partitioning technology is utilized, the hard disk set of each SAS expansion card in the SAS expansion card set is partitioned into the plurality of partitions, each partition includes the hard disk subset, and each partition corresponds to the port of the SAS channel card; and specific control for how many hard disks correspond to the ports of the SAS channel card is realized, IO loads can be adjusted in a controllable manner, the balanced IO load of each port on the SAS channel card can be realized, and the IO load efficiency of each port of the SAS channel card is improved.

Description

technical field [0001] The invention relates to the field of storage, in particular to a JBOD cascade system. Background technique [0002] In the storage backend, in order to expand the number of large-scale hard disks, the storage field generally adopts the SAS topology (SAS, Serial Attached SCSI, serial SCSI). figure 1 shown. That is, the storage is connected to a multi-level SAS expansion card through a port of the SAS channel card, and each level of SAS expansion card can expand a certain number of hard disks, so that the entire storage device can expand more hard disks. SAS channel cards generally have two common forms: dual-port and four-port. In order to improve IO performance, many manufacturers use two or more SAS channel card ports to expand the back-end IO bottleneck. It is actually found that although the total back-end IO bandwidth has been improved, it is not directly proportional to the number of SAS channel card ports actually used. For example, when one S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0607G06F3/0629G06F3/0671
Inventor 王献飞
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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