6 Sử dụng trình cài đặt Debian
6.3.6.1.2 Sử dụng máy nhân bản mạng
Một câu sẽ được hỏi trong phần lớn tiến trình cài đặt là có nên dùng máy nhân bản mạng làm nguồn gói, hay không. Trong phần lớn trường hợp, trả lời mặc định là tốt, nhưng vẫn có một số ngoại lệ.
If you arenotinstalling from a full CD/DVD image, you really should use a network mirror as otherwise you will end up with only a very minimal system. However, if you have a limited Internet connection it is bestnotto select the desktoptask in the next step of the installation.
If you are installing from a single full CD image, using a network mirror is not required, but is still strongly recommended because a single CD image contains only a fairly limited number of packages. If you have a limited Internet connection it may still be best tonot select a network mirror here, but to finish the installation using only what’s available on the CD image and selectively install additional packages after the installation (i.e. after you have rebooted into the new system).
If you are installing from DVD, any packages needed during the installation should be present on the first DVD image. Use of a network mirror is optional.
One advantage of adding a network mirror is that updates, that have occurred since the CD/DVD images were created and have been included in a point release, will become available for installation, thus extending the life of your CD/DVD set without compromising the security or stability of the installed system.
In summary: selecting a network mirror is generally a good idea, except if you do not have a good Internet connection. If the current version of a package is available from installation media, the installer will always use that. The amount of data that will be downloaded if you do select a mirror thus depends on
1. những tác vụ bạn chọn trong bước tiếp theo của tiến trình cài đặt, 2. những gói nào cần thiết cho các tác vụ đó,
CHAPTER 6. SỬ DỤNG TRÌNH CÀI ĐẶT DEBIAN 6.3. SỬ DỤNG MỖI THÀNH PHẦN
3. which of those packages are present on the installation media you have scanned, and
4. whether any updated versions of packages included on the installation media are available from a mirror (either a regular package mirror, or a mirror for security or stable-updates).
Note that the last point means that, even if you choose not to use a network mirror, some packages may still be downloaded from the Internet if there is a security or stable-updates update available for them and those services have been configured.