The post is a snippet from a new whitepaper released on the website – “Druvaa inSync – Laptop Backup for Remote Workforce”, please download the original document from – http://www.druvaa.com/products/insync_docs.html
About 200 million employees work remotely, i.e. they are not at their desk while accessing emails, sending work updates or editing financial sheets and about 70% of this working force never plans a backup before starting or during the travel. With over 600,000 notebooks lost on US airports, this post discusses the key concerns in remote-backup, shortcomings in existing solutions and how inSync addresses them.
Remote Backup Requirements
Some of the key requirements for remote or on-the-move laptop backup are –
- Availability of sufficient bandwidth – Statistics show that on an average a business PC has about 8GB of important corporate data. Almost 80% of this data is usually in form of archived emails. The rate of addition/change of data is about 1% but the actual differential change almost doubles to about 2% (because of the email archival formats and post processing used by most of the email clients like Microsoft Outlook). Transferring this differential data (160 MB) over a WAN connection can be a problem especially when the user wants to spend that limited time accessing and answering the new emails.
- Network access to backup server -While traveling, the users often cannot access enterprise LAN or VPN, which restricts their access to organization’s secure resources. While working over the WAN the user’s PC does not even have a static (publically visible) IP address. This makes it impossible for the backup server to contact the user’s PC and fire a backup.
- Security -Working on the WAN, un-encrypted data backup/restore can expose the corporate information making it vulnerable to eavesdropping or stealing.
Limitations of Existing Solutions
There are two major design limitations in most of the existing solutions inherited from the tape-backup legacy –
- Server triggered backup – Earlier when mobility was not an option, network backups used to be driven by a central backup server. The legacy still continues and even today most network based PC backup systems are still server triggered. The architecture imposes following limitations-
- When the user is traveling, the server initiates and sends network requests out-side the corporate network. Unlike the web or email server, this is a special case and needs more attention.
- The PC must be also visible to the server on a published IP address.
- The majority work is performed by the server and as the enterprise size grows the server scalability becomes a bottleneck.
- Dependence of low latency, high bandwidth network -Thanks to the tape-backup legacy, most network backup systems today use same old R-Sync style checksum algorithms for incremental backups. And because of large no. of network interactions required in these algorithms, the backup systems works better on low-latency networks for less network turn-around time and faster execution.
Druvaa inSync – Client Triggered Backup Architecture
Druvaa inSync is an automated enterprise laptop backup solution which protects corporate data while in office or on-the-move. It features simple backup, point-in-time restore, and patent-pending de-duplication technology to make backups much faster.
Druvaa inSync client is a host based soft driver which gets installed on the user PCs. It is equipped with sufficient backup intelligence to initiate and accomplish backup. Configuring a client is a simple 5 step effort and can be completed within minutes of installation. The client triggered backup architecture enables the client to contact server and initiate backup over LAN/WAN and ensures high levels of scalability and security. Druvaa inSync Enterprise Server is a software service which runs on a dedicated sever and can scale to serve terabytes of enterprise data. The server accepts backup and restore requests on published IP addresses using a 256-byte SSL encrypted channel and stores it locally on a 256-bit AES encrypted storage.
Data-deduplication – 10X Faster Backups
Druvaa inSync uses patent pending data de-duplication technology called SendUnqiue to remove duplicate data at the source (user’s PC) before the actual data backup is initiated.
The data updates for a user are checked for duplicate content against existing data (from all the users) backed up at the server. The server then requests backup for only newly created unique content and maintains a reference for common content.