Continuous Data Protection For Kerio MailServer (Optional Add-On for Dedicated Kerio MailServer)
The Data Protection Process
Scheduled point-in-time volume snapshots are scheduled on the CDP Server. The CDP server then periodically connects to the CDP Agent program and synchronizes changed disk sectors to the CDP Server. The CDP Server creates a new point-in-time image of the disk volume every time it connects to the agent for synchronization. The point-in-time images are called recovery points and are stored in what Righteous calls a Disk Safe.Recovery points only consist of a copy of changed disk sectors. This means it usually only take seconds or minutes to complete disk synchronization even on very large volumes. The more frequently recovery points are schedule the quicker they complete. When compression is enabled hundreds of recovery points can be stored in less space than it takes to store one disk image.
In between synchronization requests from the CDP Server, the CDP Agent passively tracks changes to the hard disks as they are happening. This process introduces NO overhead and requires a relatively small amount of memory. This is typically about 6 MB of memory per 100 GB of disk storage being synchronized.
Secure Data Management and Archiving
Data on the CDP Server is stored in R1Soft's patent-pending Disk Safe storage format. This on disk format enables CDP Server to archive point-in-time recover images for long periods of time using as little disk space as possible. For each configured backup schedule a rotation policy can be defined. This policy specifies the number of different incrementals to keep for each schedule. Old recovery points are automatically deleted according to the policy. This system of minutely, hourly, daily, weekly, and monthly recovery point management is flexible enough for all needs.Please consider the following example policy demonstrating the flexibility of automatic data protection policy:
Synchronize every 10 minutes - retain the last 48 recovery points
Synchronize hourly - retain the last 48 recovery points
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Synchronize daily at midnight - retain the last 7 recovery points
Synchronize weekly on Sundays - retain the last 4 recovery points
Synchronize monthly on the 1st - retain the last 48 recovery points
Such a policy can be automatically managed by CDP Server. In addition to policy based management any unwanted recovery point can be deleted by an administrator at any time. Selected recovery points can also be locked to prevent automatic deletion by a policy.
Support Heterogeneous Environments
The CDP Server Software can be installed on either a Microsoft Windows Server or Linux Server. Regardless of O/S selection for the CDP Server both Windows and Linux computers running the CDP Agent program can be protected. Both Linux and Windows data protection are managed from a single web interface on the CDP Server.Browsing and Restoring Files
Files for both MS Windows NTFS partitions and Linux file systems can be browsed on the CDP Server web interface. Administrators can verify backups by browsing files. Any combination of files and directories can be selected for restore through an easy-to-use web interface and file browser. Files can be restored to their original location, an alternate location, or even alternate host. They can also be optionally encrypted in transit using RSA keys and 128-bit blowfish encryption.The CDP Server has proprietary implementations of NTFS and Linux file systems enabling the CDP Server to read directly into the recovery point disk images just like they were mounted on a live server.
Bare-Metal Restore and Disaster Recovery
Each recovery point stored on the CDP Server is virtually a complete disk image as seen at a particular point-in-time. Each disk image includes the file system formatting, partition table, and volume management data needed to rebuild the entire disk.In the case of disaster or for quick roll-back your Windows or Linux server can be booted into a special disaster recovery mode (see Disaster Recovery Methods below). Once booted into disaster recovery mode a recovery point can be streamed across the network directly onto your server's hard disks from the CDP Server.
End-To-End Strong Encryption
CDP Server supports strong encryption of disk data using RSA keys and the blowfish cipher. During a synchronization data is encrypted (and optionally compressed) on the agent and sent to the server over the network where it is stored in encrypted form. The data can only be decrypted using a RSA key protected with a passphrase. During a bare-metal restore disk sectors are decrypted on the fly at the agent.Block Transfer Protocol
CDP Server communicates over the network using the TCP based Block Transfer Protocol developed by R1Soft. This protocol enables the efficient pipelining of disk sectors and blocks over the network. All blocks are verified on the sending and receiving end using MD5 check sums. The CDP Agent authenticates CDP Servers using RSA keys. All data is encrypted using RSA keys and blowfish cipher with 128-bit keys.Price Chart |
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| CDP 1 | CDP 2 | CDP 3 | CDP 4 | CDP 5 | |
| Disk Space | 100 GB | 200 GB | 300 GB | 400 GB | 500 GB |
| Bandwidth | 200 GB | 400 GB | 600 GB | 800 GB | 1000 GB |
| Price per Month | $199 | $249 | $299 | $349 | $429 |
