From 049a055c845f8747d8c88902e6fb9abaa01ebf7e Mon Sep 17 00:00:00 2001 From: tianci Date: Sat, 2 Nov 2024 11:57:49 +0800 Subject: [PATCH 1/2] Supplement the backup content --- docs/books/admin_guide/09-backups.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/docs/books/admin_guide/09-backups.md b/docs/books/admin_guide/09-backups.md index 6d017f06ca..fd0b0c7389 100644 --- a/docs/books/admin_guide/09-backups.md +++ b/docs/books/admin_guide/09-backups.md @@ -52,7 +52,7 @@ These operations consist of saving information in a file, on a peripheral or a s ### The process -Backups require a lot of discipline and rigor from the system administrator. It is necessary to ask the following questions: +Backups require a lot of discipline and rigor from the system administrator. System administrator need to consider the following issues before performing backup operations: * What is the appropriate medium? * What should be backed up? @@ -63,6 +63,9 @@ Backups require a lot of discipline and rigor from the system administrator. It * Automatic or manual? * Where to store it? * How long will it be kept? +* Is there a cost issue to consider? + +In addition to the above mentioned issues, system administrator should also consider the economic cost, performance, data importance, bandwidth usage and other factors according to the actual use scenario. ### Backup methods From 2e7fa1f4ab33f70a3b05bf069fea98ad99e9a054 Mon Sep 17 00:00:00 2001 From: tianci Date: Sat, 2 Nov 2024 12:33:31 +0800 Subject: [PATCH 2/2] Modify the content of the backup method --- docs/books/admin_guide/09-backups.md | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/docs/books/admin_guide/09-backups.md b/docs/books/admin_guide/09-backups.md index fd0b0c7389..343caddbe0 100644 --- a/docs/books/admin_guide/09-backups.md +++ b/docs/books/admin_guide/09-backups.md @@ -69,10 +69,13 @@ In addition to the above mentioned issues, system administrator should also cons ### Backup methods -* **Complete**: one or more **filesystems** are backed up (kernel, data, utilities, ...). -* **Partial**: one or more **files** are backed up (configurations, directories, ...). -* **Differential**: only files modified since the last **complete** backup are backed up. -* **Incremental**: only files modified since the last backup are backed up. +* **Full backup**: refers to a one-time copy of all files, folders or data in the hard disk or database. +* **Incremental backup**: refers to the backup of the data updated after the last Full backup or Incremental backup. +* **Differential backup**: Refers to the backup of the changed files after the Full backup. +* **Selective backup (Partial backup)**: Refers to backing up a part of the system. +* **Cold backup**: refers to the backup when the system is in shutdown or maintenance state. The backed up data is exactly the same as the data in the system during this period. +* **Hot backup**: Refers to the backup when the system is in normal operation. As the data in the system is updated at any time, the backed-up data has a certain lag relative to the real data of the system. +* **Remote backup**: refers to backing up data in another geographic location to avoid data loss and service interruption caused by fire, natural disasters, theft, etc. ### Periodicity