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1) Virtual machine disappeared or was deleted When you hit the usage limit on your account, for example with a 90-day trial or the monthly access from an MSDN subscription, your storage accounts are set read-only, the VHD files for your VMs remain in the storage account as-is, but any deployed VMs are removed.
This is done because deployed VMs reserve capacity even when stopped.
Note: Deleting VHDs may result in errors and may require you to break the lease to recover from the issue. 3) Beware of “Temporary Disk” usage We have seen a few customers that have used the D: drive to store important data, not realizing it is temporary storage.
The Temporary Storage (D:) drive is not persisted to Windows Azure storage as OS disks and data disks are.
Building VMs in cloud is no different and one must take important measures to protect the VMs.
This blog post summarizes the best practices to be used to protect Windows Azure Virtual Machines 7) Failed to start virtual machine .
One key benefit that may motivate developers to use temporary disk is performance.I/O performance for temporary disks is higher than the IO permanence to OS disks, Data Disks.The reason is data is not persisted to Windows Azure Storage.Trial account users can enable pay-as-you-go, and for accounts with monthly limits like with an MSDN subscription, you will be able to deploy VMs from the existing VHDs when the next month’s billing cycle begins and the next month of usage is available.I’ve detailed this issue and mitigations in this blog post Important Note: 90 day trial is associated with various quotas documented here.
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You cangroup or connect up to 50 virtual machines under a single cloud service.