美国机房计划在以下时间段进行应急演习。届时，包括火警探测器，供电器等会进行测试。服务器可能会有5-20分钟的断电时间。

2011-08-05 02:00-07:00 
2011-08-06 23:00-次日07:00 
注：单台服务器仅在A或B时间段内受影响，不会先后两次影响到。

原文 
Electrical circuit breaker maintenance and routine datacenter testing will be performed to improve the integrity of our SNA data center on Thursday, August 4th, 2011 between the hours of 11 A.M. and 4 P.M. Pacific Standard Time. All fire alarm, smoke detectors and fire suppression systems will be tested. There will also be an emergency power shut down during this time to replace and repair circuit breakers and power distribution systems. This will cause a brief downtime on the following machine for approximately 20 minutes. We apologize for the inconvenience.

Electrical circuit breaker maintenance and routine datacenter testing will be performed to improve the integrity of our SNA data center on Saturday, August 6th, 2011 between the hours of 8 A.M. and 4 P.M. Pacific Standard Time. All fire alarm, smoke detectors and fire suppression systems will be tested. There will also be an emergency power shut down during this time to replace and repair circuit breakers and power distribution systems. This will cause a brief downtime on the following machine for approximately 5 minutes. We apologize for the inconvenience.