Specialized Section
Laptop Backup by Deduplication
01.03.2012, 10:00
Data change their value and take the significance. Number of companies realizes that and the primary problem is not the loss or steal of laptop anymore. The main problem is loss of data.
Laptop backup is not completely an easy issue – backup mechanisms have to be able to cope with slow and asymmetric internet connectivity and they shouldn’t lead to an extreme data increase in the central. These requirements are fulfilled only by principles based on deduplication. The set of SW tools in Sync by DRUVA Company is the efficient solution.
The elementary problem in a real solution is not data backup into the central office of the company. Standard approaches somehow make the data migrate to the central office. If the connection is strong enough there is no problem.
But what if it is not?
Number of common ‘home’ or mobile connections creates illusion of very fast connection. Most of the connections is asymmetric and the provider of connectivity mentions the download speed as the main parameter.
The download speed is not put into effect so much while data backup and by contrast the upload is used to full capacity, which is lower in the order of magnitude. Data transfer of hundreds of MB or hundreds of GB is almost unreal at the standard approach.
Efficient and basically the only one solution is setting of algorithms, which manage to reduce the volume of transferred data. This principle is called deduplication; in thiscontext running on the client (not on the central device).
What is ‘deduplication’?
Data deduplication is a method of data redundant elimination. The principle is that the deduplication algorithm divides each file into several blocks. Then it performs calculation of unique identifiers describing each of unique blocks.
If a block occurs during the backup, which has already existed, it neither transfers to client again nor stores into the central storage – it is only replaced by block reference, which has already been stored.
Deduplication also helps to:
- save money for purchase of new disks
- reduce the network load
- restore data faster in case of necessity
When is the benefit of deduplication the highest?
Firstly in there, where identical or similar files appear:
- That is fulfilled at the backup in terms of one (among Full Backups there are rather small changes)
- And it is also fulfilled at the backup in terms of many clients (it usually contains the same operating system, users have locally the same data and so on)
Compression ratios of deduplication algorithms may vary (according to data type) typically i.e. 1:50, in special cases even more!
Solution of DRUVA Company
The solution of Druva Company is an intelligent tool for laptop and desktop backup by method of client deduplication. It solves basic requirements for backup including ability to work through LAN, WAN, VPN and solution of data coding security.
Basic characteristics of tool for laptop backup – Druva InSync
Client Deduplication
- widely reduces the volume of data transferred through lines
- thus it enables to increase the speed of data backup into the central
Continuous Data Protection
- Backup is performed according to the schedule at given time period. Thus number of restore points comes up on time axis, which contains up-to-date data.
- It is possible to go back to any of restore points and restore the whole system or a single file.
WAN Optimization
- Automatically detects the characteristics of connection and modifies the parameters so the bandwidth is used efficiently and does not block user running at the same time.
Highly Scalable and Secure
- Solution is widely extendable (up to 5000 clients)
- Communication is coded
Full PC Backup and Bare Metal Restore
- is possible to perform complete data backup
- on its basis to perform bare metal recovery (including system) in case of complete data loss
Search based recovery
- Fast and easy object searching for restoration from backup data repository.
