English to Chinese Tech/Engineering IT (Information Technology) Virtualization

"We hit a wall on performance last fall. Users were experiencing horrendous performance, our servers were being maxed out; fingers were pointing at everyone," Perkins says.

After hiring a consulting firm that used Akorri software in assessing the environment, Perkins quickly saw that problems in the storage environment were behind the poor server performance. "It showed our [storage-area network] at 100 per cent capacity, and servers with I/O threshold {against our SAN} were getting hit with the poor performance," he says.
I/O阈值对照SAN的服务器受到了性能低下的影响？
没处理好，谢谢指正。