Telecloud Backup

Combining reliability and performance

Telecloud Backup safeguards your data by backing them up daily to a specific KDDI France site using dedicated facilities. The service offers the following capabilities:

• Backup of data held on physical or virtual servers
• Backups stored on a RAID (redundant array of independent disks) system
• High backup speeds (saving up to 70% of bandwidth)
• Data encrypted during transfer
• Daily reporting

Telecloud Backup can be used independently of any other service or to bolster KDDI France’s IaaS services such as Telecloud Agility.

Proven technology

Telecloud’s backup and restoration service is underpinned by the EMC²® Avamar® technology (other solutions are also possible, like COHESITY), offering the following benefits:

• Data deduplicated at source
• Reduced backup window (by only processing modified data)
• Reduced bandwidth
• Optimised I/O on the storage system
• Compatible with most operating systems, including VMWare and Hyper-V
• Plug-in apps to ensure data consistency (MS SQL, Notes, Exchange, SharePoint, Oracle, etc.).

Secured backups

Several mechanisms are deployed to safeguard the backed-up data and guarantee their integrity:

• Redundant architecture: the backup systems are composed of several servers (nodes) and feature dual failure protection. At server level, a RAIN system (Redundant Array of Independent Nodes, the equivalent of RAID 5 for nodes) enables hot node replacement. The disks are either RAID 1 or RAID configured.
• Integrity check: the integrity of all backed-up data is checked once a day by a dedicated process (HFS check). A snapshot of the system is also taken twice a day so that the volume can be brought back to a healthy state in the event of a human error or should data become corrupted.

Data deduplication

The data deduplication process used by Telecloud Backup aims to optimise the volume of data to be transferred during the backup process.

The first time the backup is performed, the data are split into blocks. During subsequent backups, the system detects the blocks containing modified data, compresses them, and then transfers them.

Data deduplication is particularly suitable for sites with a limited internet bit rate.

An optimised process

The Telecloud Backup process only transfers modified data, which it identifies by comparing them with a local client-side cache.

The data to be backed up are split into blocks and compressed. These blocks are then combined to form composite blocks and sent to the backup server. The local cache is updated.