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Tutorial: Imaging: Backup, Restore and Clone |
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Tutorial: Imaging: Backup, Restore and Clone |
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Tutorial: Imaging: Backup, Restore and Clone
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Tutorial: Imaging: Backup, Restore and Clone |
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Tutorial: Imaging: Backup, Restore and Clone |
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Imaging allows you to back up (capture a disk image), recover (restore disk image to the same system) and clone (restore disk image to another system with identical hardware). Combining Imaging and Provisioning gives IT organizations an excellent way of addressing any system deployment and recovery scenario.
LinMin uses Clonezilla as its backup engine. Clonezilla is an open source project partially funded by LinMin. We selected Clonezilla because it is the best open source bare metal imaging solution available, used on millions of systems. Working closely with the Clonezilla team, we integrated it into the LinMin Bare Metal Provisioning framework to create a scalable, database driven imaging solution complete with an application programming interface for easy integration into customers' own applications.
The LinMin imaging subsystem will recognize all major Linux and Windows file systems and will not back up empty disk sectors. The typical compression ration is 3:1. Backup and restore speeds are extremely high and further improve with the speed of processors, disks and networks.
For non-recognized file systems, the entire disk will be copied (using dd), increasing the time and disk space required to perform imaging functions while still providing excellent integrity.
LinMin Bare Metal Imaging is intended for Disaster Recovery (DR) and Cloning:
| • | Disaster Recovery: in this mode, the disk image that is restored to a system was captured from that same system, providing a way of rolling back to known-good state of when the most recent backup was taken. Operating system, applications, settings and data are restored exactly as they were captured, eliminating the need to re-install applications. Because our imaging backup takes place when a system boots to the network, it is not suitable for 24x7x365 environments and is best used in conjunction with traditional file-by-file backup solutions. |
| • | Cloning: in this mode, you deploy the disk image collected from a system to another system with identical hardware. Many customers use LinMin to deploy systems in their data centers as an alternative to provisioning: this is a very viable solution if the hardware is homogeneous or has only limited variants (e.g., hundreds or thousands of systems of 3 to 5 different types.) Some customers capture "Golden Images" that contain scripts that easily allow the cloned system to self-customize (change IP, host name, etc.) when it first boots, eliminating the need for manual intervention. |
Here is a representative Imaging Dashboard:
Hardware and Software RAID devices are not supported at this time. RAID implementations vary by vendor, and some work, while others don't. Because of this inconsistency, LinMin does not provide support RAID devices.
API: any function done with the GUI can also be performed programmatically using the LinMin Application Programming Interface.
This tutorial will enable to start imaging systems within minutes.