Metadata discovered by Azure Migrate appliance
This article provides details of the metadata discovered by Azure Migrate appliance.
The Azure Migrate appliance is a lightweight appliance that the Azure Migrate: Discovery and assessment tool uses to discover servers running in your environment and send server configuration and performance metadata to Azure.
Metadata discovered by the Azure Migrate appliance helps you to assess server readiness for migration to Azure, right-size servers, and plan costs. Azure doesn't use this data in any license compliance audit.
Collected metadata for VMware servers
The appliance collects configuration, performance metadata, data about installed applications, roles, and features (software inventory) and dependency data (if agentless dependency analysis is enabled) from servers running in your VMware environment.
Here's the full list of server metadata that the appliance collects and sends to Azure:
| DATA | COUNTER |
|---|---|
| Server details | |
| Server ID | vm.Config.InstanceUuid |
| Server name | vm.Config.Name |
| vCenter Server ID | VMwareClient.Instance.Uuid |
| Server description | vm.Summary.Config.Annotation |
| License product name | vm.Client.ServiceContent.About.LicenseProductName |
| Operating system type | vm.SummaryConfig.GuestFullName |
| Boot type | vm.Config.Firmware |
| Number of cores | vm.Config.Hardware.NumCPU |
| Memory (MB) | vm.Config.Hardware.MemoryMB |
| Number of disks | vm.Config.Hardware.Device.ToList().FindAll(x => is VirtualDisk).count |
| Disk size list | vm.Config.Hardware.Device.ToList().FindAll(x => is VirtualDisk) |
| Network adapters list | vm.Config.Hardware.Device.ToList().FindAll(x => is VirtualEthernet).count |
| CPU utilization | cpu.usage.average |
| Memory utilization | mem.usage.average |
| Processor model/name | vm.Config.Hardware.CpuModel |
| Number of Sockets in a Processor | vm.Config.Hardware.NumCpuPkgs |
| Per disk details | |
| Disk key value | disk.Key |
| Dikunit number | disk.UnitNumber |
| Disk controller key value | disk.ControllerKey.Value |
| Gigabytes provisioned | virtualDisk.DeviceInfo.Summary |
| Disk name | Value generated using disk.UnitNumber, disk.Key, disk.ControllerKey.VAlue |
| Read operations per second | virtualDisk.numberReadAveraged.average |
| Write operations per second | virtualDisk.numberWriteAveraged.average |
| Read throughput (MB per second) | virtualDisk.read.average |
| Write throughput (MB per second) | virtualDisk.write.average |
| Per NIC details | |
| Network adapter name | nic.Key |
| MAC address | ((VirtualEthernetCard)nic).MacAddress |
| IPv4 addresses | vm.Guest.Net |
| IPv6 addresses | vm.Guest.Net |
| Read throughput (MB per second) | net.received.average |
| Write throughput (MB per second) | net.transmitted.average |
| Inventory path details | |
| Name | container.GetType().Name |
| Type of child object | container.ChildType |
| Reference details | container.MoRef |
| Parent details | Container.Parent |
| Folder details per server | ((Folder)container).ChildEntity.Type |
| Datacenter details per server | ((Datacenter)container).VmFolder |
| Datacenter details per host folder | ((Datacenter)container).HostFolder |
| Cluster details per host | ((ClusterComputeResource)container).Host |
| Host details per server | ((HostSystem)container).VM |
Performance metadata
Here's the performance data that an appliance collects for a server running on VMware and sends to Azure:
| Data | Counter | Assessment impact |
|---|---|---|
| CPU utilization | cpu.usage.average | Recommended server size/cost |
| Memory utilization | mem.usage.average | Recommended server size/cost |
| Disk read throughput (MB per second) | virtualDisk.read.average | Calculation for disk size, storage cost, server size |
| Disk writes throughput (MB per second) | virtualDisk.write.average | Calculation for disk size, storage cost, server size |
| Disk read operations per second | virtualDisk.numberReadAveraged.average | Calculation for disk size, storage cost, server size |
| Disk writes operations per second | virtualDisk.numberWriteAveraged.average | Calculation for disk size, storage cost, server size |
| NIC read throughput (MB per second) | net.received.average | Calculation for server size |
| NIC writes throughput (MB per second) | net.transmitted.average | Calculation for server size |
Collected metadata for Hyper-V servers
The appliance collects configuration, performance metadata, data about installed applications, roles, and features (software inventory) and dependency data (if agentless dependency analysis is enabled) from servers running in your Hyper-V environment.
Here's the full list of server metadata that the appliance collects and sends to Azure.
| Data | WMI class | WMI class property |
|---|---|---|
| Server details | ||
| Serial number of BIOS | Msvm_BIOSElement | BIOSSerialNumber |
| Server type (Gen 1 or 2) | Msvm_VirtualSystemSettingData | VirtualSystemSubType |
| Server display name | Msvm_VirtualSystemSettingData | ElementName |
| Server version | Msvm_ProcessorSettingData | VirtualQuantity |
| Memory (bytes) | Msvm_MemorySettingData | VirtualQuantity |
| Maximum memory that the server can consume | Msvm_MemorySettingData | Limit |
| Dynamic memory enabled | Msvm_MemorySettingData | DynamicMemoryEnabled |
| Operating system name/version/FQDN | Msvm_KvpExchangeComponent | GuestIntrinsicExchangeItems Name Data |
| Server power status | Msvm_ComputerSystem | EnabledState |
| Per disk details | ||
| Disk identifier | Msvm_VirtualHardDiskSettingData | VirtualDiskId |
| Virtual hard disk type | Msvm_VirtualHardDiskSettingData | Type |
| Virtual hard disk size | Msvm_VirtualHardDiskSettingData | MaxInternalSize |
| Virtual hard disk parent | Msvm_VirtualHardDiskSettingData | ParentPath |
| Per NIC details | ||
| IP addresses (synthetic NICs) | Msvm_GuestNetworkAdapterConfiguration | IPAddresses |
| DHCP enabled (synthetic NICs) | Msvm_GuestNetworkAdapterConfiguration | DHCPEnabled |
| NIC ID (synthetic NICs) | Msvm_SyntheticEthernetPortSettingData | InstanceID |
| NIC MAC address (synthetic NICs) | Msvm_SyntheticEthernetPortSettingData | Address |
| NIC ID (legacy NICs) | MsvmEmulatedEthernetPortSetting Data | InstanceID |
| NIC MAC ID (legacy NICs) | MsvmEmulatedEthernetPortSetting Data | Address |
Performance data
Here's the server performance data that the appliance collects and sends to Azure.
| Performance counter class | Counter | Assessment impact |
|---|---|---|
| Hyper-V Hypervisor Virtual Processor | % Guest Run Time | Recommended server size/cost |
| Hyper-V Dynamic Memory Server | Current Pressure (%) Guest Visible Physical Memory (MB) |
Recommended server size/cost |
| Hyper-V Virtual Storage Device | Read Bytes/Second | Calculation for disk size, storage cost, server size |
| Hyper-V Virtual Storage Device | Write Bytes/Second | Calculation for disk size, storage cost, server size |
| Hyper-V Virtual Network Adapter | Bytes Received/Second | Calculation for server size |
| Hyper-V Virtual Network Adapter | Bytes Sent/Second | Calculation for server size |
- CPU utilization is the sum of all usage, for all virtual processors attached to a server.
- Memory utilization is (Current Pressure * Guest Visible Physical Memory) / 100.
- Disk and network utilization values are collected from the listed Hyper-V performance counters.
Collected data for Physical servers
The appliance collects configuration, performance metadata, data about installed applications, roles, and features (software inventory) and dependency data (if agentless dependency analysis is enabled) from physical servers or server running on other clouds like AWS, GCP, etc.
Windows server metadata
Here's the full list of Windows server metadata that the appliance collects and sends to Azure.
| Data | WMI class | WMI class property |
|---|---|---|
| FQDN | Win32_ComputerSystem | Domain, Name, PartOfDomain |
| Processor core count | Win32_PRocessor | NumberOfCores |
| Memory allocated | Win32_ComputerSystem | TotalPhysicalMemory |
| BIOS serial number | Win32_ComputerSystemProduct | IdentifyingNumber |
| BIOS GUID | Win32_ComputerSystemProduct | UUID |
| Boot type | Win32_DiskPartition | Check for partition with Type = GPT:System for EFI/BIOS |
| OS name | Win32_OperatingSystem | Caption |
| OS version | Win32_OperatingSystem | Version |
| OS architecture | Win32_OperatingSystem | OSArchitecture |
| Disk count | Win32_DiskDrive | Model, Size, DeviceID, MediaType, Name |
| Disk size | Win32_DiskDrive | Size |
| NIC list | Win32_NetworkAdapterConfiguration | Description, Index |
| NIC IP address | Win32_NetworkAdapterConfiguration | IPAddress |
| NIC MAC address | Win32_NetworkAdapterConfiguration | MACAddress |
Windows server performance data
Here's the Windows server performance data that the appliance collects and sends to Azure.
| Data | WMI class | WMI class property |
|---|---|---|
| CPU usage | Win32_PerfFormattedData_PerfOS_Processor | PercentIdleTime |
| Memory usage | Win32_PerfFormattedData_PerfOS_Memory | AvailableMBytes |
| NIC count | Win32_PerfFormattedData_Tcpip_NetworkInterface | Get the network device count. |
| Data received per NIC | Win32_PerfFormattedData_Tcpip_NetworkInterface | BytesReceivedPerSec |
| Data transmitted per NIC | BWin32_PerfFormattedData_Tcpip_NetworkInterface | BytesSentPersec |
| Disk count | BWin32_PerfFormattedData_PerfDisk_PhysicalDisk | Count of disks |
| Disk details | Win32_PerfFormattedData_PerfDisk_PhysicalDisk | DiskWritesPerSec, DiskWriteBytesPerSec, DiskReadsPerSec, DiskReadBytesPerSec. |
Linux server metadata
Here's the full list of Linux server metadata that the appliance collects and sends to Azure.
| Data | Commands |
|---|---|
| FQDN | cat /proc/sys/kernel/hostname, hostname -f |
| Processor core count | cat /proc/cpuinfo | awk '/^processor/{print $3}' | wc -l |
| Memory allocated | cat /proc/meminfo | grep MemTotal | awk '{printf "%.0f", $2/1024}' |
| BIOS serial number | lshw | grep "serial:" | head -n1 | awk '{print $2}' /usr/sbin/dmidecode -t 1 | grep 'Serial' | awk '{ $1="" ; $2=""; print}' |
| BIOS GUID | cat /sys/class/dmi/id/product_uuid |
| Boot type | [ -d /sys/firmware/efi ] && echo EFI || echo BIOS |
| OS name/version | We access these files for the OS version and name: /etc/os-release /usr/lib/os-release /etc/enterprise-release /etc/redhat-release /etc/oracle-release /etc/SuSE-release /etc/lsb-release /etc/debian_version |
| OS architecture | uname -m |
| Disk count | fdisk -l | egrep 'Disk.*bytes' | awk '{print $2}' | cut -f1 -d ':' |
| Boot disk | df /boot | sed -n 2p | awk '{print $1}' |
| Disk size | fdisk -l | egrep 'Disk.*bytes' | egrep $disk: | awk '{print $5}' |
| NIC list | ip -o -4 addr show | awk '{print $2}' |
| NIC IP address | ip addr show $nic | grep inet | awk '{print $2}' | cut -f1 -d "/" |
| NIC MAC address | ip addr show $nic | grep ether | awk '{print $2}' |
Linux server performance data
Here's the Linux server performance data that the appliance collects and sends to Azure.
| Data | Commands |
|---|---|
| CPU usage | cat /proc/stat/ | grep 'cpu' /proc/stat |
| Memory usage | free | grep Mem | awk '{print $3/$2 * 100.0}' |
| NIC count | lshw -class network | grep eth[0-60] | wc -l |
| Data received per NIC | cat /sys/class/net/eth$nic/statistics/rx_bytes |
| Data transmitted per NIC | cat /sys/class/net/eth$nic/statistics/tx_bytes |
| Disk count | fdisk -l | egrep 'Disk.*bytes' | awk '{print $2}' | cut -f1 -d ':' |
| Disk details | cat /proc/diskstats |
Software inventory data
The appliance collects data about installed applications, roles, and features (software inventory) from servers running in VMware environment/Hyper-V environment/physical servers or servers running on other clouds like AWS, GCP etc.
Windows server applications data
Here's the software inventory data that the appliance collects from each discovered Windows server:
| Data | Registry Location | Key |
|---|---|---|
| Application Name | HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall* HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall* |
DisplayName |
| Version | HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall* HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall* |
DisplayVersion |
| Provider | HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall* HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall* |
Publisher |
Windows server features data
Here's the features data that the appliance collects from each discovered Windows server:
| Data | PowerShell cmdlet | Property |
|---|---|---|
| Name | Get-WindowsFeature | Name |
| Feature Type | Get-WindowsFeature | FeatureType |
| Parent | Get-WindowsFeature | Parent |
Windows server operating system data
Here's the operating system data that the appliance collects from each discovered Windows server:
| Data | WMI class | WMI Class Property |
|---|---|---|
| Name | Win32_operatingsystem | Caption |
| Version | Win32_operatingsystem | Version |
| Architecture | Win32_operatingsystem | OSArchitecture |
SQL Server metadata
Here's the SQL Server data that the appliance collects from each discovered Windows server:
| Data | Registry Location | Key |
|---|---|---|
| Name | HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL | installedInstance |
| Edition | HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\<InstanceName>\Setup | Edition |
| Service Pack | HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\<InstanceName>\Setup | SP |
| Version | HKLM:\SOFTWARE\Microsoft\Microsoft SQL Server\<InstanceName>\Setup | Version |
Linux server application data
Here's the software inventory data that the appliance collects from each discovered Linux server. Based on the operating system of the server, one or more of the commands are run.
| Data | Commands |
|---|---|
| Name | rpm, dpkg-query, snap |
| Version | rpm, dpkg-query, snap |
| Provider | rpm, dpkg-query, snap |
Linux server operating system data
Here's the operating system data that the appliance collects from each discovered Linux server:
| Data | Commands |
|---|---|
| Name version |
Gathered from one or more of the following files: /etc/os-release /usr/lib/os-release /etc/enterprise-release /etc/redhat-release /etc/oracle-release /etc/SuSE-release /etc/lsb-release /etc/debian_version |
| Architecture | uname |
SQL Server instances and databases data
Azure Migrate appliance used for discovery of VMware VMs can also collect data on SQL Server instances and databases.
SQL database metadata
| Database Metadata | Views/ SQL Server properties |
|---|---|
| Unique identifier of the database | sys.databases |
| Server defined database ID | sys.databases |
| Name of the database | sys.databases |
| Compatibility level of database | sys.databases |
| Collation name of database | sys.databases |
| State of the database | sys.databases |
| Size of the database (in MBs) | sys.master_files |
| Drive letter of location containing data files | SERVERPROPERTY, and Software\Microsoft\MSSQLServer\MSSQLServer |
| List of database files | sys.databases, sys.master_files |
| Service broker is enabled or not | sys.databases |
| Database is enabled for change data capture or not | sys.databases |
| Always On Availability Group databases and states | sys.dm_hadr_database_replica_states |
SQL Server metadata
| Server Metadata | Views/ SQL server properties |
|---|---|
| Server name | SERVERPROPERTY |
| FQDN | Connection string derived from discovery of installed applications |
| Install ID | sys.dm_server_registry |
| Server version | SERVERPROPERTY |
| Server edition | SERVERPROPERTY |
| Server host platform (Windows/Linux) | SERVERPROPERTY |
| Product level of the server (RTM SP CTP) | SERVERPROPERTY |
| Default Backup path | SERVERPROPERTY |
| Default path of the data files | SERVERPROPERTY, and Software\Microsoft\MSSQLServer\MSSQLServer |
| Default path of the log files | SERVERPROPERTY, and Software\Microsoft\MSSQLServer\MSSQLServer |
| No. of cores on the server | sys.dm_os_schedulers, sys.dm_os_sys_info |
| Server collation name | SERVERPROPERTY |
| No. of cores on the server with VISIBLE ONLINE status | sys.dm_os_schedulers |
| Unique Server ID | sys.dm_server_registry |
| HA enabled or not | SERVERPROPERTY |
| Buffer Pool Extension enabled or not | sys.dm_os_buffer_pool_extension_configuration |
| Failover cluster configured or not | SERVERPROPERTY |
| Server using Windows Authentication mode only | SERVERPROPERTY |
| Server installs PolyBase | SERVERPROPERTY |
| No. of logical CPUs on the system | sys.dm_server_registry, sys.dm_os_sys_info |
| Ratio of the no of logical or physical cores that are exposed by one physical processor package | sys.dm_os_schedulers, sys.dm_os_sys_info |
| No of physical CPUs on the system | sys.dm_os_schedulers, sys.dm_os_sys_info |
| Date and time server last started | sys.dm_server_registry |
| Max server memory use (in MBs) | sys.dm_os_process_memory |
| Total no. of users across all databases | sys.databases, sys.logins |
| Total size of all user databases | sys.databases |
| Size of temp database | sys.master_files, sys.configurations, sys.dm_os_sys_info |
| No. of logins | sys.logins |
| List of linked servers | sys.servers |
| List of agent job | [msdb].[dbo].[sysjobs], [sys].[syslogins], [msdb].[dbo].[syscategories] |
| Always On Availability Groups, Replicas, and their states | sys.availability_groups, sys.dm_hadr_availability_group_states, sys.availability_group_listeners, sys.availability_group_listener_ip_addresses, sys.availability_replicas, sys.dm_hadr_availability_replica_states |
| Always On Failover Clustered Instance | sys.dm_hadr_cluster, sys.dm_hadr_cluster_members, sys.dm_hadr_cluster_networks |
Performance metadata
| Performance | Views/ SQL server properties | Assessment Impact |
|---|---|---|
| SQL Server CPU utilization | sys.dm_os_ring_buffers | Recommended SKU size (CPU dimension) |
| SQL logical CPU count | sys.dm_os_sys_info | Recommended SKU size (CPU dimension) |
| SQL physical memory in use | sys.dm_os_process_memory | Unused |
| SQL memory utilization percentage | sys.dm_os_process_memory | Unused |
| Database CPU utilization | sys.dm_exec_query_stats, sys.dm_exec_plan_attributes | Recommended SKU size (CPU dimension) |
| Database memory in use (buffer pool) | sys.dm_os_buffer_descriptors | Recommended SKU size (Memory dimension) |
| File read/write IO | sys.dm_io_virtual_file_stats, sys.master_files | Recommended SKU size (IO dimension) |
| File num of reads/writes | sys.dm_io_virtual_file_stats, sys.master_files | Recommended SKU size (Throughput dimension) |
| File IO stall read/write (ms) | sys.dm_io_virtual_file_stats, sys.master_files | Recommended SKU size (IO latency dimension) |
| File size | sys.master_files | Recommended SKU size (Storage dimension) |
ASP.NET web apps data
Azure Migrate appliance used for discovery of VMs can also collect data on ASP.NET web applications.
Here's the web apps configuration data that the appliance collects from each Windows server discovered in your environment.
| Entity | Data |
|---|---|
| Web apps | Application Name Configuration Path Frontend Bindings Enabled Frameworks Hosting Web Server Sub-Applications and virtual applications Application Pool name Runtime version Managed pipeline mode |
| Web server | Server Name Server Type (currently only IIS) Configuration Location Version FQDN Credentials used for discovery List of Applications |
Java web apps data
| Entity | Data |
|---|---|
| Web apps | Application Name Web Server ID Web Server Name Display Name Directories Configurations Bindings Discovered Frameworks (may contain JVM version) Requests (CPU requests) Limits (CPU Limits) WorkloadType Application Scratch Path Static Folders |
| Web server | OS Type OS Name OS Version OS Architecture Host Name CatalinaHomes Tomcat Version JVM Version User Name User ID Group Name Group ID |
Spring Boot web apps data
The Azure Migrate appliance used for discovery can also collect data on Spring Boot web applications.
Here's the web apps configuration data that the appliance collects from each Windows server discovered in your environment.
| Entity | Data |
|---|---|
| Web apps | Application name Maven artifact name JAR file location JAR file checksum JAR file size Spring Boot version Maven build JDK version Application property files Certificates file names Static content location Application port Binding ports (including app port) Logging configuration JAR file last modified time |
| OS runtime | OS installed JDK version JVM options JVM heap memory OS name OS version Environment variables |
Application dependency data
Azure Migrate appliance can collect data about inter-server dependencies for servers running in your VMware environment/Hyper-V environment/ physical servers or servers running on other clouds like AWS, GCP etc.
Windows server dependencies data
Here's the connection data that the appliance collects from each Windows server, which has been enabled for agentless dependency analysis from portal:
| Data | Commands |
|---|---|
| Local port | netstat |
| Local IP address | netstat |
| Remote port | netstat |
| Remote IP address | netstat |
| TCP connection state | netstat |
| Process ID | netstat |
| Number of active connections | netstat |
| Data | WMI class | WMI class property |
|---|---|---|
| Process name | Win32_Process | ExecutablePath |
| Process arguments | Win32_Process | CommandLine |
| Application name | Win32_Process | VersionInfo.ProductName parameter of ExecutablePath property |
Linux server dependencies data
Here's the connection data that the appliance collects from each Linux server, which has been enabled for agentless dependency analysis.
| Data | Commands |
|---|---|
| Local port | netstat |
| Local IP address | netstat |
| Remote port | netstat |
| Remote IP address | netstat |
| TCP connection state | netstat |
| Number of active connections | netstat |
| Process ID | netstat |
| Process name | ps |
| Process arguments | ps |
| Application name | dpkg or rpm |