SAS CONFIGURATION MANAGEMENT

摘要

Techniques to generate local configuration data of a connection of local end of a cable to a SAS expander, store the data to a memory of the expander, then send a request to a local module at the local end of the cable to store the data to a memory at the local end of the cable, and send a request to a SAS device connected to a remote end of the cable to store the data at a memory located at the remote end of the cable. In response to a disconnection and reconnection of the local end of the cable with the expander, send a request to the local module to retrieve the data. If the retrieved data is different than the stored data, then generate a signal to alert of a misconfiguration between the local end of the cable and the expander.

主权项

1. A serial attached small computer system interface (SAS) expander for managing SAS configuration, the SAS expander comprising:
a configuration management module to:
in response to a connection of local end of a cable to a port of the SAS expander, generate local configuration data associated with the connection, and store the local configuration data to a memory of the SAS expander, and send a request to a local management module at the local end of the cable to store the local configuration data to a memory at the local end of the cable, and send a request to a SAS device connected to a remote end of the cable to cause a remote management module to store the local configuration data at a memory located at the remote end of the cable,in response to a disconnection and then a reconnection of the local end of the cable with a port of the SAS expander, send a request to the local management module to retrieve the local configuration data, andif the retrieved configuration data is different than the stored configuration data, then generate a signal to alert of a misconfiguration between the local end of the cable and the port of the SAS expander.