You might have your Hyper-V server to back up your VM requirements. But how about the servers themselves? Ever thought of what might happen to them during a crisis?
RSync (ring a bell?) is an algorithm used by most backup solutions for Hyper-V backups to get their job done. But if most solutions share a common source does that make the source efficient or does it mean the solutions are inefficient enough to warrant designing algorithm of their own?
Vembu wanted something that would stand out from this crowd of big promises. We therefore came up with a driver to backup your Hyper-V environment on our own and named it VembuCBT™.
VembuCBT™ works on an interesting algorithm that backs up the entire VM during first schedule. But what it does later places Vembu BDR head and shoulders above the rest in class. Once a full backup is completed, VembuCBT™ is informed with the list of virtual hard disks that have been backed up. From then on, every change made in those disks are closely monitored and marked by the driver. Once the time for incremental backup arrives, BDR backs up the changed blocks of the file, setting the other blocks aside.
In solutions using RSync, the case is somewhat different. The full backup part is quite similar but what follows differs completely from Vembu BDR. During the incremental backup, the entire virtual disk is backed up once again and compared with the initial full backup. Then the changed parts alone are stored in the backup location, leaving out the rest.
At first blush, this might seem a bit like what VembuCBT™ does but there’s a huge difference in performance from what resides within. User data in a business environment tends to increase and not stay the same. Increase in size leads to increase in time taken during incrementals to find modified data. Thus in the case of larger virtual disks, the whole process takes more time than you have to spare and crude at best.
It isn’t the data alone you need to save for further business expansion, but also the time taken for a backup. It leads to increase in resource usage which in turn affects VM performance and uptime.
But with Vembu BDR, despite disk size increases, Vembu CBT™ keeps the time taken for each incremental as low as possible and helps you maintain VM uptime successfully.
Do try Vembu BDR today for Hyper-V backups and let us know how VembuCBT™ helped you improve resource management and VM uptime:
Go questions? Email vembu-support@vembu.com for answers.
Follow our Twitter and Facebook feeds for new releases, updates, insightful posts and more.
