| 主权项 |
1. A method for determining performance shortfall in a storage system, the method comprising:
recording, by one or more processors, a log of I/O operations of a first storage system, wherein each I/O operation includes associated operational parameters; preparing, by one or more processors, a second storage system to perform a replay of a performance shortfall that occurred during a specified time frame; performing, by one or more processors, the replay on the second storage system based at least on the log of I/O operations and the I/O operations' associated operational parameters for the specified time frame; and identifying, by one or more processors, a cause for the performance shortfall during the specified time frame based at least on a difference between I/O performance measures of the replay and I/O performance measures for the specified time frame. |
