diff --git a/vmbackup.md b/vmbackup.md index 28562c6..2450dc2 100644 --- a/vmbackup.md +++ b/vmbackup.md @@ -94,7 +94,9 @@ The command will upload only changed data to `gs:///latest`. Where `` is the snapshot for the last day ``. This approach saves network bandwidth costs on hourly backups (since they are incremental) and allows recovering data from either the last hour (`latest` backup) -or from any day (`YYYYMMDD` backups). Note that hourly backup shouldn't run when creating daily backup. +or from any day (`YYYYMMDD` backups). Because of this feature, it is not recommended to store `latest` data folder +in storages with expensive reads or additional archiving features (like [S3 Glacier](https://aws.amazon.com/s3/storage-classes/glacier/)). +Note that hourly backup shouldn't run when creating daily backup. Do not forget to remove old backups when they are no longer needed in order to save storage costs. diff --git a/vmbackupmanager.md b/vmbackupmanager.md index 024cbe4..025b57e 100644 --- a/vmbackupmanager.md +++ b/vmbackupmanager.md @@ -57,7 +57,8 @@ To get the full list of supported flags please run the following command: The service creates a **full** backup each run. This means that the system can be restored fully from any particular backup using [vmrestore](https://docs.victoriametrics.com/vmrestore.html). -Backup manager uploads only the data that has been changed or created since the most recent backup (incremental backup). +Backup manager uploads only the data that has been changed or created since the most recent backup +([incremental backup](https://docs.victoriametrics.com/vmbackup.html#incremental-backups)). This reduces the consumed network traffic and the time needed for performing the backup. See [this article](https://medium.com/@valyala/speeding-up-backups-for-big-time-series-databases-533c1a927883) for details. @@ -123,6 +124,10 @@ The result on the GCS bucket latest folder +Please note, `latest` data folder is used for [smart backups](https://docs.victoriametrics.com/vmbackup.html#smart-backups). +It is not recommended to store `latest` data folder in storages with expensive reads or additional archiving features +(like [S3 Glacier](https://aws.amazon.com/s3/storage-classes/glacier/)). + Please, see [vmbackup docs](https://docs.victoriametrics.com/vmbackup.html#advanced-usage) for more examples of authentication with different storage types.