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Thursday, June 22, 2017

Can I use Azure Backup to restore system state backup of Domain controller running in Azure VM?

Microsoft recently announced that Azure Backup now supports System State backups directly to Azure Backup service, without installing Azure Backup Server.
This is a great improvement to Azure Backup service to it's current capabilities (backup Azure VMs and files on sever).

But I keep getting question will this feature allow to restore a System State backup of domain controller running as Azure Virtual Machine.
And the answer is no, at least not yet. It is not possible to connect to Directory Services Restore Mode (DSRM) for a VM running in Azure.

But I am 100% that we will have this feature in future.

Tuesday, June 20, 2017

Citrix Netscaler VPX Azure server looses network connectivity after changing IP address

Today I faced an issue when Citrix Netscaler VPX lost network connectivity when it was deployed as Azure virtual machine.
For a while I could not understand why this has happened because VM boot diagnostics showed that VM was up and running, but it was not reachable.
This happened because the VM had changed the IP address and in fact Citrix has documented this behaviour

Bottom line - if you are using Citrix Netscaler VPX in Azure, make sure to make its IP static immediately after deploying.

Friday, June 16, 2017

Can I connect multiple sites to the same policy-based Azure VPN gateway?

Now you can!
With new Azure VPN gateways it is possible to connect multiple sites to one policy-based VPN gateway. This was not possible with old VPN gateways.

Keep in mind that new Azure VPN Gateways do not address other policy-based VPN gateway limitations like integration with App Services and support for Point-to-Site VPNs.

What is maximum disk size for Virtual Machines in Azure?

You can have disks up to 4 TB in size for your virtual machines in Azure. This is four times more than it was previously.
4 TB disks are available both managed and unmanaged.

Keep in mind that Azure Backup and Azure Site recovery does not support 4 TB disks yet, but soon will. 

Sunday, June 4, 2017

Calculating VM storage with Azure Pricing Calculator

Azure Pricing Calculator is a frequent tool when working with Azure, but it can be a little tricky.
For example, if you select a VM type, then there is already mentioned storage:

The included storage is a temporary VM storage.
To calculate pricing for OS disk and additional data disks, you must go to storage pricing section and calculate storage there.

And remember default OS disk size for Azure Marketplace images is 128 GB.

Azure Public IP pricing explained

Here is a little insight about Azure Public IP pricing.
First reminder, that there are:

  • Static Public IPs. These don't change.
  • Dynamic Public IPs. Are changed if the resource attached to IP is deallocated.

Public IP pricing is as follows:
1. Dynamic IP costs ~ 3$ /month
2. Static IP costs the same as Dynamic IP + a reservation cost, which also is ~ 3$/month
3. Also, first 5 Public IPs don't have reservation cost.

Azure Backup Server and Windows Server 2016 support


If you are using Azure Backup server and need to install Azure Backup Server agent on Windows Server 2016 machine then you have following options:

  1. If you are using Azure Backup Server v1 (based on DPM 2012 R2), then you need to apply KB3175529 on Azure Backup Server, otherwise agent installation on Windows Server 2016 machine will fail with error 347.
  2. If you have the latest Azure Backup Server v2, then it has built in support for Windows Server 2016