Barracuda Backup - changed block tracking does not properly

Greetings,


What is going on:

In a Word. I am trying to solve a problem with a backup of Barracuda and the block change tracking.  It happened from the server (as well as the Barracuda 190) has been installed long ago.


Long story short. With CBT activated (changed block Tracking) Barracuda is supposed only to save "disk blocks has changed."  She doesn't at the level of virtualization, no comments. In my case, it's back up about 124 GB every night. (2-3 hours of the device), and then from 10 to 12 hours to move to the cloud.


MY SYSTEM:

There is only 1 VM (comments) on the host computer. The two drives on the computer virtual (comments) are a 60 GB drive OS (SBS Server Essentials of 2012) and 100 GB data disc.  Both have 33 GB used on each of them (66GB total).  Changed nightly expected data should be an absolute maximum of 6-8 GB each night much less commonly.

Nothing about the host OR virtual machine (guest) server is added to the 124 to 128 GB that says Barracuda is saved.


HOW CAN I KNOW IT IS NOT WORKING PROPERLY? :

I have two other systems in separate buildings that work as expected. So, I have an A, B, C comparison.  A and B are working properly. C is not.   They are all the same hardware platform HP ML350p Gen8. They are all configured as except for the sizes and quantities of drives in the RAID 5 group. They are all ESXi if the one in question is on 5.1.0, and the other two are on 5.5.0.


Not that it matters, but the guests on these systems are: host a system has a brand new 2012 R2 STD Server .  B host has a system "autonomous converted" SBS 2011 .  C host system has a new 2012 Essentials server.


WHAT DID I TRY? :

I made sure all the settings in the settings have CBT enabled and set to true.  I tried to re - set up a new selection of backup within the Barracuda 190. I made contact with technicians Barracuda of 1st and 2nd level support on several occasions. Initially, they said it was a problem of snapshot.  I looked the better shots I knew how (I'm a noob, but I got some great info here about how to look at snapshots and VM running of stains from p_hall), then when they couldn't tell me where in the phase of snapshot, it was, they said 'it works as expected. , (and even if I have only 66 gb of disk space used on a total of 160 GB on reviews) "isn't really 125 GB backup every night. It just reports that it is.  Still my bandwidth says otherwise.   WHAT !!!!!!!!???????


Finally, I took the well-known Barracuda of the FD (from system B Barracuda) and put it on the DP (in lieu of system C Barracuda) for a few nights.  He behaved exactly like original C system Barracuda. He supported 128 and about 147 GB the first night the next two nights.


See attachment for samples of the reports at the end of last year backup 3 systems. Yes, they are older, but the results are the same.


Any suggestions on how to fix this?  Thank you.


I want to mention that my problem is now solved. Still using CBT, my nightly backups are more in line with what is, was expected.  Instead of backup 128 GB EVERY night (I still don't know whence the figure), I support anywhere from 3 to 15 GB per night.  A difference.

The problem has been resolved with a simple upgrade to ESXi 5.1 to 5.5 upd 2.  No other changes made.

Wouldn't be an accurate assumption that unlike VM KB 1020128 that CBT is, in fact, NOT compatible with the ESXi5.1?

I'll be the first to admit that VMWare is not my forte.  That said, I'm rather discouraged that there no one answer to my post with suggestions.  I post in the wrong place. Poor choice of title/key words? It was poorly made? Unintelligible?

According to me, that I was very thorough in my research on the issue.  I found this which mentions clearly the CBT is supported in ESXi 4 and more.

http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=1020128

I was diligent in troubleshooting up to the point where I pretty much dismissed everything except the host operating system.

Not knowing how big the community is, I would think that there is someone out there with my exactly the same problem, or at least there was someone out there who was successfully in 5.1 ESXi with CBT on a system of Barracuda.

I am open to any suggestion that may make future messages/questions to gather more responses.

Thank you.

Tags: VMware

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