Akonadi 和通訊錄
這裡的資料由KDE-PIM 開發人員 Tobias Koenig 提供。
一些定義
真實數據（real data）我們指的像是聯繫人或事件這類數據。這些數據或是存儲在「群件服務器（groupware server）」，或是存儲在本地文件中。具體存儲的位置取決於你使用的資源，比如，個人聯繫人（Personal Contacts）資源就是把數據存儲到$HOME/.local/share/contacts，同時VCard File 資源（已經不推薦使用了
）則存儲數據到$HOME/.kde/share/apps/kabc/std.vcf。
緩存數據（cached data）則是真實數據的副本，放置在數據庫中便於更快速的訪問和作為離線緩存。數據庫還同時保留著用來管理數據的元數據（meta data），Akonadi需要元數據才能正常工作。
設置數據（configuration data）是設定Akonadi 服務器和個別資源的數據。服務器的設置數據可以在$HOME/.config/akonadi 找到，資源的設置數據通常存儲在$HOME/.kde/share/config/akonadi_xyz_resourcerc# (xyz 是資源名而#是其的實例數)。
籌備備份
然後現在是該決定備份什麼樣的數據了。如果你想備份"真實數據（real data）"，這東西又得具體看你設定的資源……要是你用的是「群件服務器（groupware server）」，備份這事應該在那邊搞定。對於聯繫人，你需要的通常是$HOME/.local/share/contacts 那的文件。
Akonadi 托盤圖標提供備份和恢復功能。備份的是"緩存數據（cache data）"，所以可能沒帶全你所有的數據！如果你想1:1進行系統拷貝，這功能會很有用，你可以拷貝真實數據和配置的同時復制緩存數據過去，之後便不必再次從源載入數據（比如群件服務器）。
測試你的資源
KRunner offers you Akonadi Resource Configuration, or you can access this through the . You may find several resources set up. You may find one labelled
Address Book - No KDE address book plugin configured yet.
That's the old compatibility bridge (possibly created by the migrator tool). You should remove this one!
std.vcf - Ready
This is the VCard File Resource which points to $HOME/.kde/share/apps/kabc/std.vcf per default. It is not recommended that you use that one, as it doesn't share the benefit of Akonadi.
Personal Contacts - Offline
That's the preferred resource for your local contacts which points to
$HOME/.local/share/contacts
Note that this may say "Offline" when in fact you are using it. This is a display bug, and can safely be ignored.
And when more components use Akonadi?
When the rest of the components move to Akonadi, will all the data be under ~/.local/share? That should make backup easy. Well, contacts and mails are stored there now, I don't know what the plan for events/todos is, but it would make sense to store them there as well. We'll keep it in mind when discussion pops up!