Online data backup
As online backup , online backup , Cloud Backup or Web backup is called a backup over the Internet . This is done on the data storage of an Internet service provider in a data center .
The process relieves the user of having to procure reliable data storage devices himself, to check it regularly, to manage it and to protect it against loss.
method
After logging in, the customer receives a user name and a password for access to the data backup. Internet access is a technical requirement . The software for data backup or uploading via a website should ensure secure encryption in order to protect the transmitted data from unauthorized access.
Because the data transfer rate of Internet access is usually only a fraction of that of drives and local area networks , the software can perform data compression as far as possible. Data that has already been compressed - for example in the ZIP , JPEG , MPEG or MP3 file formats - can hardly be further compressed.
Internet access with a data transfer rate of 1 Mbit / s can theoretically transfer 450 MB per hour or 10.5 GB per day. This is, for example, a possible data transfer rate when uploading via ADSL 6000 in Germany. With faster internet access such as Even higher data transmission speeds are possible via VDSL , for example . Some service providers offer to exchange larger amounts of data by post using hard drives or DVDs , which is particularly useful for a larger initial backup.
Because of the relatively low data transfer rate, the incremental data backup process, in which only new and changed data is copied, is of particular importance. Some providers search files with their software for changed parts and only transfer the changed data blocks to the data memory (block level). Some recognize when files have just been renamed and do not retransmit them. Renamed file folders and files that have been moved cannot always be recognized, which can lead to file retransmissions.
Some solutions such as B. Netzdrive , Novell iFolder , Dropbox , Fabasoft Folio Cloud or Recovery Guard offer features such as the encryption of data on the server, the assignment of file access rights to certain other users or user groups, the replication of data to several servers and version control of Changes to, whereby properties similar to those of so-called distributed file systems are achieved. If access can be restricted, the functionality of this software partially overlaps with those for file sharing .
Some solutions maintain their server structure exclusively in Germany, which is why the entire data traffic is subject to the strict German data protection laws, with the consequence of additional protection against unauthorized access. Few solutions also offer end-to-end encryption , by means of which the data is already encrypted locally on your own computer and is therefore securely encrypted on the way to the server.
Modern providers not only offer online backup in their software, but also parallel backup on local media, such as a tape drive or USB peripherals. Companies should make sure that SQL databases such as B. Microsoft SQL Server are supported and a complete system disaster recovery in the event of a server failure is included. Also useful is a direct virus scanner integrated in the online backup software, which checks the data to be backed up or restored and thus increases the security of the backup.
Online services
| Surname | Storage space in GB ( free) |
Storage space in GB ( chargeable) |
Block- level backup |
Sharing folders | software | Web interface |
Platforms | Seat |
|---|---|---|---|---|---|---|---|---|
| CrashPlan | unlimited (30 days) | 10 / unlimited | Yes | No | yes (CrashPlan +) | Yes | Win, Mac, Linux, Solaris | United States |
| Dropbox | 2 (up to 22,875) | 100/200/500/1000 to unlimited | Yes | Yes | yes (Dropbox) | Yes | Win, Mac, Linux, Android, iOS, BlackBerry | United States |
| Fabasoft | 5 | 10/100/1000 | No | Yes | yes ( Fabasoft Folio Cloud ) | Yes | Win, Mac, Linux, Android, iOS | Germany, Austria, Switzerland |
| FTAPI | 3 - 7 Days) | unlimited | No | Yes | Yes | Yes | Win, Mac, Linux, Android, iOS | Germany |
| F-Secure | - | 5/25 | Yes | Yes | Yes | Yes | Win, Mac | Finland |
| Google Drive | 15 (exclusive WhatsApp backup) | 100/1000/10000/20000/30000 | k. A. | Yes | Yes | Yes | Win, Mac, Android, iOS, Linux (in the future) | United States |
| iCloud | 5 (exclusive music, apps, books, photo stream) | 50 (exclusive music, apps, books, photo stream) | No | No | Yes | Yes | Win, Mac, iOS | United States |
| MagentaCLOUD | 3 for everyone, 15 for Telekom customers | 100/500/1000/5000 | k. A. | Yes | Yes | Yes | Win, Mac | Germany |
| Mega | 15th | 500/2000/4000 | Yes | Yes | Yes | Yes | Win, Mac, Android, iOS | New Zealand |
| Windows Live Mesh | 5 | - | k. A. | Yes | yes (part of Windows Live Essentials) |
yes (Windows Live SkyDrive) |
Win, Mac | United States |
| Microsoft OneDrive | 5 (25 for existing customers before April 22, 2012) | 100/200 With Office 365 Home 1 TB per user (max. 5) possible. |
No | Yes | Yes | Yes | Win, Mac, Windows Phone, Android, iOS | United States |
| MOUNT10 | 1 (30 days) | unlimited | Yes | Yes | yes (Attix5) | Yes | Win, Mac, Linux (incl. DBs) | Switzerland |
| Netzdrive | 5 (30 days) | unlimited | Yes | Yes | Yes | No | Win, Mac, Linux, iOS, Android | Germany |
| SpiderOak | 2 (60 days) | 100-2000 | Yes | Yes | Yes | Yes | Win, Mac, Linux, Android, iOS | United States |
| Strato HiDrive | 100 (30 days) | 20-5000 | Yes | Yes | yes (with Linux via smb and others) |
Yes | Win, Mac, Linux, Android, iOS, Windows Phone, Chrome, Synology | Germany |
| TeamDrive | 2 | unlimited | No | Yes | Yes | Yes | Win, Mac, Linux, Portable (Win USB drive), iOS, Android | Germany |
| data-SAFE.ch | 15 (30 days) | unlimited | Yes | No | Yes | Yes | Win, Mac, Linux, various | Switzerland |
Use in Germany
According to a study from 2019, 51 percent of German Internet users save their private data online and another 33 percent can imagine doing so in the future. 76 percent of users save photos online and 56 percent each save their documents and calendar online.
See also
literature
- Holger Bleich, Jürgen Schmidt: Web safes . In: c't , 12/2008, p. 124 ff.
- PC professional : online backup . The Nielsen Company, 2007.
Web links
- Comparison of online backup services in the English language Wikipedia; Comparison of online backup providers
Individual evidence
-
↑ Composition of the free storage space of Dropbox
2.00GB (standard)
16.0GB (recommend friends) (500 MB per friend)
3.00GB (camera upload (per 500 MB uploaded via camera upload you get 500 MB for free, up to an upper limit of 3.00GB))
1.00GB (Link to Mailbox App)
0.125GB (Post on Twitter via Dropbox)
0.125GB (Follow Dropbox on Twitter)
0.125GB (Link to Twitter) 0.125GB (
Link to Facebook)
0.125GB (Feedback: What they like it about Dropbox)
0.25GB (complete the first steps tutorial)
Total: 22.875 GB - ↑ ftapi.com
- ↑ Homepage Telekom | MagentaCLOUD | Our tariffs , accessed on May 17, 2020.
- ↑ Is the MEGA.nz free account size reduced from 50 GB to 15 GB? - Quora. Retrieved July 20, 2020 .
- ↑ data-SAFE.ch
- ↑ Representative forsa survey on the use of the cloud in private households strato.de , September 15, 2019; accessed on October 25, 2019.
- ↑ Half of Germans already use the cloud for private data . Kroker's Look @ IT from September 15, 2019; accessed on October 25, 2019.