摘要:
Each communication path between controllers and a plurality of storage devices has a plurality of expanders coupled in series. In order to shorten the time during which the communication path is not used for I/O, either (A) the length of time for which I/O suppression is set for the communication path is shortened, or (B) the overall time it takes for processing other than I/O processing is shortened. In the (A), a determination as to whether or not the coupling between the expanders has been disconnected is made for the I/O-suppressed communication path, and in a case where the result of this determination is negative, a discover process is carried out after releasing the I/O suppression with respect to this communication path. In the (B), the number of command issue times of updating routing control information of the expander is reduced.
摘要:
Each communication path between controllers and a plurality of storage devices has a plurality of expanders coupled in series. In order to shorten the time during which the communication path is not used for I/O, either (A) the length of time for which I/O suppression is set for the communication path is shortened, or (B) the overall time it takes for processing other than I/O processing is shortened. In the (A), a determination as to whether or not the coupling between the expanders has been disconnected is made for the I/O-suppressed communication path, and in a case where the result of this determination is negative, a discover process is carried out after releasing the I/O suppression with respect to this communication path. In the (B), the number of command issue times of updating routing control information of the expander is reduced.
摘要:
Deterioration of performance due to diagnosis processing performed when a failure occurs is prevented.A storage apparatus 10 includes a controller 11A and a plurality of expanders 112A, 121A coupled to the controller 11A to form a first system, and includes a controller 11B and a plurality of expanders 112B, 121B coupled to the controller 11B to form a second system. The controller 11A accesses the storage drive 171 through the expanders 112A, 121A, and the second controller 11B accesses the storage drive through the expanders 112B, 121B. In the storage apparatus 10, the controller 11A stores a maximum number (concurrently-executable maximum number) of communication ports 80 that are concurrently diagnosable in the first system, and repeatedly executes a process of selecting the communication ports 80 not exceeding the concurrently-executable maximum number and a process of causing the expanders 112A, 121A to diagnose the selected communication ports 80.
摘要:
Regarding an additional storage chassis used by being connected to a basic chassis equipped with a storage controller, provided is a computer system capable of changing or updating a firmware environment of the additional storage chassis so that normal operation of the additional storage chassis can be secured on the user side even if the operation different from the operation, which was guaranteed at the time of factory shipment, is executed on the user.The present invention provides a computer system including a basic chassis equipped with a storage controller for controlling data I/O between a host computer and a storage system, and an additional chassis equipped with a plurality of storage drives to configure the storage system, wherein when a connection-target additional chassis is connected to a connection-source additional chassis connected to the basic chassis, the storage controller compares a data communication attribute of the connection-target additional chassis with a data communication attribute of the connection-source additional chassis and updates the data communication attribute of the connection-target additional chassis in accordance with a comparison result.
摘要:
Deterioration of performance due to diagnosis processing performed when a failure occurs is prevented.A storage apparatus 10 includes a controller 11A and a plurality of expanders 112A, 121A coupled to the controller 11A to form a first system, and includes a controller 11B and a plurality of expanders 112B, 121B coupled to the controller 11B to form a second system. The controller 11A accesses the storage drive 171 through the expanders 112A, 121A, and the second controller 11B accesses the storage drive through the expanders 112B, 121B. In the storage apparatus 10, the controller 11A stores a maximum number (concurrently-executable maximum number) of communication ports 80 that are concurrently diagnosable in the first system, and repeatedly executes a process of selecting the communication ports 80 not exceeding the concurrently-executable maximum number and a process of causing the expanders 112A, 121A to diagnose the selected communication ports 80.