55
votes
Accepted
How to perform incremental / continuous backups of zfs pool?
ZFS is an incredible filesystem and solves many of my local and shared data storage needs.
While, I do like the idea of clustered ZFS wherever possible, sometimes it's not practical, or I need some ...
- 197k
8
votes
How to perform incremental / continuous backups of zfs pool?
You have two different ways you can do that:
The traditional, filesystem-agnostic way that is/was used for the last decades, with tools like rsync or Bacula. There you have tested and (hopefully) ...
- 2,492
5
votes
Accepted
Why take both incremental and full backups
Well, the reason for that is not trust in the backup. It's the amount of work for a restore (among many other considerations that go in a backup scheme). If you have only one full and 300 incremental ...
- 98.4k
5
votes
Back up incremental snapshots to another volume
A newcomer to the scene is Attic https://attic-backup.org/
We used rdiff-backup for a few years as our primary backup method. It was great for what it did, but created tens/hundreds of thousands of ...
- 609
4
votes
Why take both incremental and full backups
The need of full backups is more obvious when more time goes by. When recovering from the incremental backups you go through all the changes after last full backup in order to recover the current ...
- 45.2k
4
votes
How to perform incremental / continuous backups of zfs pool?
Also checkout ZFS autobackup. Its easy to use and very powerfull. It has more features compared to the other solutions mentioned: https://github.com/psy0rz/zfs_autobackup
- 41
3
votes
explain rsnapshot incremental rotation
Where does the data go to
First you have to understand that only the gamma (lowest level) backups actually copy any data, all the others just rotate (aka rename) and delete the already existing ...
- 131
3
votes
Accepted
Should this be the last backup of the year?
It would be nice if we had a week, a month and a year that all had a common denominator in days. But we don't. Therefore, there's no correct mathematical answer to your question.
It's just a scheme. ...
- 45.2k
3
votes
Accepted
How to have rsnapshot link to original files?
The way rsnapshot works, on the first run, it creates a full copy.
On the next ones, it only stores the files that have changed. If a file hasn't changed, it creates a hard link to it.
This means ...
- 156
2
votes
easy way to restore incremental rsync backup?
As the various backup dirs only contain the changed files by the last current backup, the restore procedure is somewhat complex: you need to restore the current full backup and re-apply the various ...
- 46.4k
2
votes
Back up incremental snapshots to another volume
Rsync / Rsnapshot are way better tools for this kind of work, especially considering that they give you a "live" snapshot directory where inconsistencies will be limited to some file at most, but they ...
- 46.4k
2
votes
Accepted
backuppc can't complete full backup. read error
Assuming you already increased timeouts, etc, and with no other prior information on your setup, probably there are some very large files on the remote end (each larger than 2Gb) which breaks the flow....
2
votes
Back up incremental snapshots to another volume
An alternative to LVM snapshot is to use the datto block driver (aka. dattobd).
From the dattobd GitHub page:
The Datto Block Driver (dattobd) solves the above problems and brings functionality ...
- 21
2
votes
Accepted
Transitioning from rsync to ZFS send/receive
No options. You'll need to copy the data over again.
- 197k
2
votes
Windows 2016 incremental backup to network share
You can backup to network shares and the backups are performed incrementally. What is not supported are multiple versions maintained on the network share. You can only access the latest backup version....
- 2,105
1
vote
rsync optimization over --link-dest "referenceBackup"?
The added overhead with hardlink-based incremental backup is generally due to all the new directories each backup run need to create.
Directories can not be hardlinked on Linux (or other Unixes) and ...
- 46.4k
1
vote
Accepted
What behavior has tar on TERM signal while doing incremental backup?
As tar doesn't include an index, your output tar file will be truncated ("premature end of archive") but still be usable; however as the snapshot file is generated at the end of the archival ...
- 6,908
1
vote
How to back up cloud Exchange mailboxes from the client side, without access to the Exchange server?
We are using EdbMails Exchange backup application and it costs us $5 per month for 200 mailboxes. You can log in with your admin credentials and backup all mailboxes to your local drive. It is AES ...
1
vote
How to back up cloud Exchange mailboxes from the client side, without access to the Exchange server?
It is exactly what joeqwerty has said, if you don’t have administrator permission, you are very hard to back up. So you can follow the suggestions which is provided by joeqwerty.
Here’s an article for ...
- 1,042
1
vote
bacula virtual full backup
Found more infos here: https://www.bacula.org/9.4.x-manuals/en/main/Migration_Copy.html#SECTION003001000000000000000
Virtual full is treated as migration/copy so is a sd to sd operation. Those types ...
- 91
1
vote
Accepted
Is GNU tar incremental backup reliable if ext4 is mounted with noatime?
The --atime-preserve=replace restores the access times of dumped files after reading, meaning it changes back and forth while --atime-preserve=system doesn't set the times at all. Probably only the ...
- 45.2k
1
vote
Accepted
Automatic deletion of backups and transaction logs leaves broken backup points
It's possible to use the sp_delete_backuphistory stored procedure to clear out older history. Note that it doesn't know what you've deleted or not, but it will clear out older history than date X that ...
- 458
1
vote
Offsite Incremental Encrypted Backups for a small law office
I wrote an article on backups recently you might find interesting, for a bit of background on backups.
You have a couple of major options here:
Use a piece of backup software that provides ...
- 31.5k
1
vote
Backup LXD container to an other LXD host
Nicolas
I found the same issue that you faces. In my test , I have to upgrade from lxd 2.0.8 to 2.7 up and have to stop lxc (which created or start from the 2.0.x) then start lxc again you will see ...
- 11
1
vote
Why take both incremental and full backups
It isn't just about trusting the backup application either, there are or can be a few things that can wrong, even if the application reports everything is fine.
What happens if the application is 100%...
- 3,773
1
vote
Router backup solution with USB
If the router supports syslog, that can be used to forward logs to a syslog server for long term storage. Even DD-WRT supports syslog.
- 4,523
1
vote
Robocopy /xd with wildcards and sub-paths
I'm sorry, but according to the documentation at https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy:
/xf <FileName>[ ...] Excludes files that match the ...
- 131
1
vote
7z “is not supported archive” while updating an archive
When filename.7z is exist and not a valid 7-zip file, you will get this error.
Case 1: filename.7z is a empty file.
$ ls -l
-rw-rw-r-- 1 chenyang chenyang 0 Jun 11 23:19 empty.7z
$ 7za a empty.7z /...
- 11
1
vote
btrfs-enabled backup solution
I had similar frustrations, so I ended up creating a few scripts which I'm calling snazzer. Together they offer snapshotting, pruning, measurement and transport via ssh (but as of today can send/...
- 11
1
vote
How do I backup a couple of macs to a Linux sever?
I have been successfully backing up my Macs to a Linux Server running CentOS via Samba by using SuperDuper! on the Mac. It has a smart update feature which allows incremental backups. The file it ...
- 945
Only top scored, non community-wiki answers of a minimum length are eligible