Computing device and method for adjusting physical links of a sas expander of the computing device

A computing device, comprising:

• a first serial attached small computer system interface (SAS) expander and one or more second SAS expanders;
• a storage system;
• at least one processor;
• and
• one or more modules that are stored in the storage system and are executed by the at least one processor, the one or more modules comprising:
• a detecting module that detects whether data flow of physical links of the first SAS expander for transmitting data to a second SAS expander connected to the first SAS expander is saturated;
• a determining module that determines whether the first SAS expander has reserved physical links that can be adjusted when the data flow of the physical links of the first SAS expander for transmitting data to the second SAS expander is saturated;
• a setting module that determines a reserved physical link to be adjusted from the reserved physical links, obtains configuration parameters of the adjusted physical link, and sets address information of the configuration parameters as an address of the second SAS expander when the first SAS expander has reserved physical links that can be adjusted;
• a writing module that modifies the configuration parameters of the adjusted physical link, generates a new firmware according to the modified configuration parameters, and adjusts the adjusted physical link to the second SAS expander by writing the new firmware to the first SAS expander;
• and
• a controlling module that generates a control signal to a diverter switch that connects to the SAS first expander and the second SAS expander, and controls the diverter switch to adjust the adjusted physical link to the second SAS expander according to the control signal.

A non-transitory storage medium having stored thereon instructions that, when executed by a processor of a computing device, causes the computing device to perform a method for adjusting physical links of serial attached small computer system interface (SAS) expanders of the computing device, the SAS expanders comprising a first SAS expander and one or more second SAS expanders, the method comprising:

• (a) detecting whether data flow of physical links of the first SAS expander for transmitting data to a second SAS expander connected to the first SAS expander is saturated;
• (b) determining whether the first SAS expander has reserved physical links that can be adjusted when the data flow of the physical links of the first SAS expander for transmitting data to the second SAS expander is saturated;
• (c) determining a reserved physical link to be adjusted from the reserved physical links, obtaining configuration parameters of the adjusted physical link, and setting address information of the configuration parameters as an address of the second SAS expander when the first SAS expander has reserved physical links that can be adjusted;
• (d) modifying the configuration parameters of the adjusted physical link, generating a new firmware according to the modified configuration parameters, and adjusting the adjusted physical link to the second SAS expander by writing the new firmware to the first SAS expander;
• and
• (e) generating a control signal to a diverter switch that connects to the SAS first expander and the second SAS expander, and controlling the diverter switch to adjust the adjusted physical link to the second SAS expander according to the control signal.