Mỗi ứng dụng sẽ có một thỏa thuận cấp độ dịch vụ chi tiết mức độ hỗ trợ dự kiến từ SA. Phiên bản mới của HĐH và các ứng dụng sẽ được theo dõi và được chấp thuận, giới thiệu kiểm soát tương tự như được mô tả vá tự động. Tuy nhiên, nền tảng thực thế giới có xu hướng được kiểm soát bằng cách quản lý | The Basics 171 Warning Mobile Phones with Cameras Rented colocation facilities often forbid cameras and therefore forbid mobile phones that include cameras. Console Access Certain tasks can be done only from the console of a computer. Console servers and KVM switches make it possible to remotely access a computer s console. For an in-depth discussion refer to Section . Console servers allow you to maintain console access to all the equipment in the data center without the overhead of attaching a keyboard video monitor and mouse to every system. Having lots of monitors or heads in the data center is an inefficient way to use the valuable resource of data center floor space and the special power air conditioning and firesuppression systems that are a part of it. Keyboards and monitors in data centers also typically provide a very unergonomic environment to work in if you spend a lot of time on the console of a server attached to a head in a data center. Console servers come in two primary flavors. In one switch boxes allow you to attach the keyboard video monitor and mouse ports of many machines through the switch box to a single keyboard video and mouse KVM . Try to have as few such heads in the data center as you can and try to make the environment they are in an ergonomic one. The other flavor is a console server for machines that support serial consoles. The serial port of each of these machines is connected to a serial device such as a terminal server. These terminal servers are on the network. Typically some software on a central server controls them all Fine and Romig 1990 and makes the consoles of the machines available by name with authentication and some level of access control. The advantage of this system is that an SA who is properly authenticated can access the console of a system from anywhere desk home and on the road and connected by remote access. Installing a console server improves productivity and convenience cleans up the data .
