就在前天左右，HostMonster主机出现大面积的无法访问，许多用户不能登录自己的网站、以及HostMonster官方网站及相关页面，大家不知道是什么原因，部分用户误以为和前些天HostMonster网站访问速度变慢有关，开始对HostMonster主机失去信任，想搬迁网站了。今天在这里我们就来告诉广大用户真正的原因，其实是HostMonster数据中心进行升级导致的，以下是HostMonster主机官方发表通知的原文：

Last night we experienced some issues in our data center that affected a portion of our clients. We wanted to take a moment to let you know what happened.

At approximately 6:22 PM MST our primary Data Center experienced an electrical transient. An Automatic Transfer Switch on one of our legs of power failed, causing some servers to lose power. Our systems are designed with multiple, redundant sources of power that automatically transfer as needed to ensure servers stay up and running. In this instance, however, the switch itself failed. It also sent a spike back to one of our transformers, causing additional problems. Our technical teams of Data Center Technicians, System Administrators, and power experts responded immediately and worked continuously to bring all our customers back online.

Our data center utilizes many redundant systems including backup generators and 4 different UPS legs of power. These are tested every two weeks and regular maintenance is performed on all systems in order to provide the most reliable service possible. However, tonight our services did not live up to your—or our own—expectations. We are evaluating every aspect of this particular failure to eliminate the possibility of recurrence.

We pride ourselves on delivering outstanding reliability and an unbeatable customer experience. Any feedback on how to improve our platform and services, as well as suggestions on how we can better communicate with you in the future, is welcome and appreciated. Thank you for your continued patience and support as we resolve this issue.

基本的意思就是告诉HostMonster用户那天网站不能访问的原因是主数据中心受到短暂断电的影响，目前已经解决了，同时用户又什么问题，欢迎及时向HostMonster官方反馈等。