Veeam Monitor v5.? monitors VMware CBT

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Veeam Monitor v5.? monitors VMware CBT

Veeam Logoby DataAssure » Thu Jun 02, 2011 1:00 am

I remember reading from one of the blogs regarding getting a reading on vStorage API CBT. Can we use Veeam Monitor to monitor that & based on the info we can estimate our snapshot interval so that the replcation image can be optimized. If the current release DOES NOT support that, will near-futue release has that implemented or any 3rd-party, especially SAN vendors have free or licensed tools to get that reader. TIA
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Re: Veeam Monitor v5.? monitors VMware CBT

Veeam Logoby Vitaliy S. » Thu Jun 02, 2011 6:47 am

Hello Stephen,

Not sure I follow you, could you please elaborate it further? Do you want Monitor to estimate the number of changed blocks? If yes, then what backup/replication job should we choose to predict changes for?

Thanks.
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Re: Veeam Monitor v5.? monitors VMware CBT

Veeam Logoby DataAssure » Wed Sep 21, 2011 12:43 am

Yes, would be nice if Monitor can report not estiamte the number of changed blocks of a particular VM from the full backup and subsequent incremental snapshots until another epoch. This request came from a customer. They purchased our tools mainly for replication DR purpose.
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Re: Veeam Monitor v5.? monitors VMware CBT

Veeam Logoby Vitaliy S. » Wed Sep 21, 2011 8:42 am

This kind of report should be available in Veeam B&R v6. Currently you can review changed data amount within the backup console, just click on the Backups->Backup job-> Properties. Thanks!
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Re: Veeam Monitor v5.? monitors VMware CBT

Veeam Logoby rbrambley » Tue Sep 27, 2011 9:50 am

I agree that if Veeam Monitor (or probably more appropriate for Veeam Reporter) could provide this info it would be nice, but here are some third party option for you:

The virtualization community has provided a good script to monitor daily rate of data change from CBT. This can be used for VMs that have not already been backed up yet by Veeam and thus do not appear in the Backup job > Properties section of Veeam BaR (but we're clear that all VMs should be backed up by Veeam, right?! :) )

How much bandwidth for offsite VM replication? - http://jpaul.me/?p=1316

Although not an official Veeam tool, Veeam employee Ricky El Qasem created a tool that could help

Replication Bandwidth Calculator - http://read.virtualizeplanet.com/?p=91

You can also use a formula to "guestimate" how much space you will need for replication jobs. You need to put in the expected values for various job criteria.

the following is copied from viewtopic.php?f=2&t=3498#p14246

... the formulas we use for disk space estimation are the following:

Backup size = C * (F*Data + R*D*Data)
Replica size = Data + C*R*D*Data

Data = sum of processed VMs size (actually used, not provisioned)
C = average compression/dedupe ratio (depends on too many factors, compression and dedupe can be very high, but we use 50% - worst case)
F = number of full backups in retention policy (1, unless backup mode with periodic fulls is used)
R = number of rollbacks (or increments) according to retention policy (14 by default)
D = average amount of VM disk changes between cycles in percent (we use 10% right now, but will change it to 5% in v5 based on feedback... reportedly for most VMs it is just 1-2%, but active Exchange and SQL can be up to 10-20% due to transaction logs activity - so 5% seems to be good average)
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