Connecting one database to many virtual machines

Hi Experts,
We have set many Virtual Machines (VM) in Windows Server already. Each Virtual Machine will be used to install SAP module for instance VM-1 for BI, VM-2 for Solution Manager, VM-3 for IDES, VM-4 for EP, etc.
The questions is:
Is it possible to integrate one Data Base (Oracle) to all virtual machine? and how to do it ?
Thank you for the respond.
Gruesse,
F. Ramli

It is called "MCOD" - http://service.sap.com/mcod
Personally I wouldn´t use such a scenario. In case you want to upgrade/patch the database all instances will be down.
Markus

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(PRESENTATION = RO)
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Harshad,
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Hi,
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Hi Tina-Shi
Thank you for the response. Please see below my findings and the logs
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Since you have not configured lab service account, make sure a) test agent can communicate with the test controller, b) test controller and test agent can access the build drop location, and c) Microsoft Test Manager can connect to the test controller
during manual test runs. Manual steps might be needed to setup the permissions mentioned above.
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- The load tests run successfully when I select local execution.
- I have referred the links mentioned , couldn't find the solution, also sending some content from logs I have on the VM machine where my TC, TA exist.
- Also, I’m the admin on my TFS machine and VM .
- TC configuration – as Local system , TA configuration- as network service.
VSTTAgent.log
I, 4988, 41, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTAgentService.exe, AgentService: Connecting to controller. Using AgentName: XXXXX-XXX-XXXX : Domain : DEVOP.Xxxxx-xxx-xxxx.com
V, 4988, 32, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentService: calling AgentObject.Hello
V, 4988, 32, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.WaitForDataCollectionAgentProcessToStart: waiting for agents to start.
V, 4988, 32, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.WaitForDataCollectionAgentProcessToStart: Agents started.
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Calling 'DataCollectionEnvironmentContext' on the data collection agent
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.WaitForDataCollectionAgentProcessToStart: waiting for agents to start.
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.WaitForDataCollectionAgentProcessToStart: Agents started.
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Successfully called 'DataCollectionEnvironmentContext' on the data collection agent
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Calling 'DataCollectionEnvironmentContext' on the test agent
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Successfully called 'DataCollectionEnvironmentContext' on the test agent
I, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentService: Successfully connected to controller.
V, 4988, 41, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentStatusAggregator.ControllerConnected: Connection to controller XXXXX-XXX-XXXX:6901 has been established.
V, 4988, 44, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Calling 'SetAgentDataCollectorInformation' on the controller
V, 4988, 44, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTAgentService.exe, AgentProcessManager.PerformActionIgnoringExceptions: Successfully called 'SetAgentDataCollectorInformation' on the controller
EqtTraceAgent.log
V, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, Agent XXXXX-XXX-XXXX: created Controller Event Sink
V, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentObject: starting state machine on different thread.
V, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, StateMachine(DataCollectionAgentState): SetNextState Online called
V, 568, 7, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, StateMachine(DataCollectionAgentState): In state Online. Waiting for state change...
V, 568, 7, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, StateMachine(DataCollectionAgentState): Exit wait for state change, current state is Online.
V, 568, 7, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, StateMachine(DataCollectionAgentState): Uninitialized => Online
V, 568, 7, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, StateMachine(DataCollectionAgentState): calling state handler for Online
V, 568, 7, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, StateMachine(DataCollectionAgentState): In state Online. Waiting for state change...
V, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectorWatcher: DataCollectorDiscoveryPeriod set to: 5000
V, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectorWatcher.Start: Starting to watch for changes in the data collector files.
V, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentObject: constructor is done, success.
I, 568, 1, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentProcess: Calling into AgentService to register the agent.
V, 568, 8, 2015/01/23, 12:28:31.395, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectorCache.ForceCacheUpdate: Performing data collector discovery.
I, 568, 1, 2015/01/23, 12:28:31.411, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentProcess: Successfully registered data collection agent process.
I, 568, 1, 2015/01/23, 12:28:31.411, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentProcess: waiting for shutdown notification.
V, 568, 8, 2015/01/23, 12:28:32.192, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectorCache.ForceCacheUpdate: Done performing data collector discovery.
V, 568, 10, 2015/01/23, 12:28:32.458, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentObject: Hello.
V, 568, 10, 2015/01/23, 12:28:32.458, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionEnvironmentContext: Adding Agent Process URI ipc://eqt-f0f6cfb9-454f-4e8a-c857-170546772b6e/
V, 568, 25, 2015/01/23, 12:38:33.345, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentObject: Hello.
V, 568, 25, 2015/01/23, 12:38:33.345, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionEnvironmentContext: Adding Agent Process URI ipc://eqt-f0f6cfb9-454f-4e8a-c857-170546772b6e/
V, 568, 33, 2015/01/23, 12:48:32.667, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentObject: Hello.
V, 568, 53, 2015/01/23, 12:48:32.667, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionEnvironmentContext: Adding Agent Process URI ipc://eqt-f0f6cfb9-454f-4e8a-c857-170546772b6e/
V, 568, 54, 2015/01/23, 12:58:33.943, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionAgentObject: Hello.
V, 568, 54, 2015/01/23, 12:58:33.943, XXXXX-XXX-XXXX\QTDCAgent32.exe, DataCollectionEnvironmentContext: Adding Agent Process URI ipc://eqt-f0f6cfb9-454f-4e8a-c857-170546772b6e/
EqtTraceController.log
V, 2608, 20, 2015/01/23, 13:08:10.287, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: Hello
V, 2608, 20, 2015/01/23, 13:08:11.302, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
I, 2608, 20, 2015/01/23, 13:08:11.302, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: Creating ControllerExecution for TestRun 9f0e53e4-09da-40f4-90d8-01bdaeec7365
I, 2608, 20, 2015/01/23, 13:08:11.318, XXXXX-XXX-XXXX\QTController.exe, ControllerSpooledJob: creating spooled job for test run 'LoadTests (2015-01-23 13:08:08)'
I, 2608, 20, 2015/01/23, 13:08:11.318, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: Queuing TestRun 9f0e53e4-09da-40f4-90d8-01bdaeec7365
V, 2608, 22, 2015/01/23, 13:12:54.566, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 22, 2015/01/23, 13:12:54.566, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: AgentHello from XXXXX-XXX-XXXX
V, 2608, 22, 2015/01/23, 13:12:54.566, XXXXX-XXX-XXXX\QTController.exe, Verifying the connection integrity for following number of objects: 1
V, 2608, 24, 2015/01/23, 13:17:54.596, XXXXX-XXX-XXXX\QTController.exe, Agent : NT AUTHORITY\NETWORK SERVICE
V, 2608, 24, 2015/01/23, 13:17:54.596, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 24, 2015/01/23, 13:17:54.596, XXXXX-XXX-XXXX\QTController.exe, User NT AUTHORITY\NETWORK SERVICE is in group TeamTestAgentService.
I, 2608, 24, 2015/01/23, 13:17:54.596, XXXXX-XXX-XXXX\QTController.exe, A user has successfully authenticated to obtain the ControllerObject.
V, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.ConnectAgent: Agent: XXXXX-XXX-XXXX from machine: xxxxx-xxx-xxxx.DEVOP.Xxxxx-xxx-xxxx.com trying to connect.
V, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, User NT AUTHORITY\NETWORK SERVICE is in group TeamTestAgentService.
I, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, AgentDomainTrusted : Controller Domain DEVOP.Xxxxx-xxx-xxxx.com Agent Domain DEVOP.Xxxxx-xxx-xxxx.com
I, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, AgentDomainTrusted : Same domain DEVOP.Xxxxx-xxx-xxxx.com
I, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.ConnectAgent : Ignoring the identity
V, 2608, 27, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, Successfully verified connection for agent XXXXX-XXX-XXXX
I, 2608, 23, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, AgentManager: Agent 'XXXXX-XXX-XXXX' successfully connected.
V, 2608, 23, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, Verifying the connection integrity for following number of objects: 1
V, 2608, 23, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.ConnectAgent: Agent: XXXXX-XXX-XXXX Returning.
V, 2608, 24, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 29, 2015/01/23, 13:19:13.442, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
I, 2608, 29, 2015/01/23, 13:19:13.442, XXXXX-XXX-XXXX\QTController.exe, A user has successfully authenticated to obtain the ControllerObject.
V, 2608, 28, 2015/01/23, 13:19:14.114, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: Hello
V, 2608, 28, 2015/01/23, 13:19:14.364, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
V, 2608, 28, 2015/01/23, 13:19:16.270, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
V, 2608, 28, 2015/01/23, 13:19:16.489, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
V, 2608, 32, 2015/01/23, 13:22:54.593, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 32, 2015/01/23, 13:22:54.593, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: AgentHello from XXXXX-XXX-XXXX
V, 2608, 32, 2015/01/23, 13:22:54.593, XXXXX-XXX-XXXX\QTController.exe, Verifying the connection integrity for following number of objects: 1
VSTTController.log
V, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, User NT AUTHORITY\NETWORK SERVICE is in group TeamTestAgentService.
I, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, AgentDomainTrusted : Controller Domain DEVOP.Xxxxx-xxx-xxxx.com Agent Domain DEVOP.Xxxxx-xxx-xxxx.com
I, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, AgentDomainTrusted : Same domain DEVOP.Xxxxx-xxx-xxxx.com
I, 2608, 23, 2015/01/23, 13:17:55.877, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.ConnectAgent : Ignoring the identity
V, 2608, 27, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, Successfully verified connection for agent XXXXX-XXX-XXXX
I, 2608, 23, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, AgentManager: Agent 'XXXXX-XXX-XXXX' successfully connected.
V, 2608, 23, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, Verifying the connection integrity for following number of objects: 1
V, 2608, 23, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.ConnectAgent: Agent: XXXXX-XXX-XXXX Returning.
V, 2608, 24, 2015/01/23, 13:17:55.893, XXXXX-XXX-XXXX\QTController.exe, ControllerObject.RequireAgentServiceUser: Agent: XXXXX-XXX-XXXX of environment [Default] trying to connect.
V, 2608, 29, 2015/01/23, 13:19:13.442, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
I, 2608, 29, 2015/01/23, 13:19:13.442, XXXXX-XXX-XXXX\QTController.exe, A user has successfully authenticated to obtain the ControllerObject.
V, 2608, 28, 2015/01/23, 13:19:14.114, XXXXX-XXX-XXXX\QTController.exe, ControllerObject: Hello
V, 2608, 28, 2015/01/23, 13:19:14.364, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
V, 2608, 28, 2015/01/23, 13:19:16.270, XXXXX-XXX-XXXX\QTController.exe, User XXXXX-XXX-XXXX\dhilloha is system, Admin, or controller user
V, 2608, 28, 2015/01/23, 13:19:16.489, XXXXX-XXX-XXXX\QTController.exe, User xxxxxxxx\dhilloha is system, Admin, or controller user
Thanks you for looking into this.
Dhillon_H

Can Virtual Machin system make negative impact to the database performance?

Can Virtual Machin system make negative impact to the database performance?
I want to make a virtual machine system in my server and then install Oracle 10g database on the virtual machine system. But I am not sure if Virtual Machin system can make any negative impact to the database performance.
Thank you

The virtual machine software vendor must have certified and provided some performance figures like running Oracle on our VM would have a performance hit of n%. VMWare has such a figure published (8% if I recall correctly).
Besides, the load on physical server, apart from the virtual machine running, would also have the impact on performance.
Other factors would be
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2. with the assumption that you will be running an OS within OS, files on host OS forming the VM, should be pre-allocated in terms of space, avoiding runtime extentions.

Windows Server 2012 - Hyper-V - Cluster Sharded Storage - VHDX unexpectedly gets copied to System Volume Information by "System", Virtual Machines stops respondig

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN.
Our setup:
Hosts - Both run Windows Server 2012 Standard and are clustered.
HP ProLiant G7, 24 GB RAM. This is the primary host and normaly all VMs run on this host.
HP ProLiant G5, 20 GB RAM. This is the secondary host that and is intended to be used in case of failure of the primary host.
We have no antivirus on the hosts and the scheduled ShadowCopy (previous version of files) is switched off.
iSCSI SAN:
QNAP NAS TS-869 Pro, 8 INTEL SSDSA2CW160G3 160 GB i a RAID 5 with a Host Spare. 2 Teamed NIC.
Switch:
DLINK DGS-1210-16 - Both the network cards of the Hosts that are dedicated to the Storage and the Storage itself are connected to the same switch and nothing else is connected to this switch.
Virtual Machines:
3 Windows Server 2012 Standard - 1 DC, 1 FileServer, 1 Application Server.
1 Windows Server 2008 Standard Exchange Server.
All VMs are using dynamic disks (as recommended by Microsoft).
Updates
We have applied the most resent updates to the Hosts, VMs and iSCSI SAN about 3 weeks ago with no change in our problem and we continually update the setup.
Normal operation:
Normally this setup works just fine and we see no real difference in speed in startup, file copy and processing speed in LoB applications of this setup compared to a single host with two 10000 RPM Disks. Normal network speed is 10-200 Mbit, but occasionally
we see speeds up to 400 Mbit/s of combined read/write for instance during file repair.
Our Problem:
Our problem is that for some reason a random VHDX gets copied to System Volume Information by "System" of the Clusterd Shared Storage (i.e. C:\ClusterStorage\Volume1\System Volume Information).
All VMs stops responding or responds very slowly during this copy process and you can for instance not send CTRL-ALT-DEL to a VM in the Hyper-V console, or for instance start task manager when already logged in.
This happens at random and not every day and different VHDX files from different VMs gets copied each time. Some time it happens during daytime wich causes a lot of problems, especially when a 200 GB file gets copied (which take a lot of time).
What it is not:
We thought that this was connected to the backup, but the backup had finished 3 hours before the last time this happended and the backup never uses any of the files in System Volume Information so it is not the backup.
An observation:
When this happend today I switched on ShadowCopy (previous files) and set it to only to use 320 MB of storage and then the Copy Process stopped and the virtual Machines started responding again. This could be unrelated since there is no way to see
how much of the VHDX that is left to be copied, so it might have been finished at the same time as I enabled ShadowCopy (previos files).
Our question:
Why is a VHDX copied to System Volume Information when scheduled ShadowCopy (previous version of files) is switched off? As far as I know, nothing should be copied to this folder when this functionis switched off?
List of VSS Writers:
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2012 Microsoft Corp.
Writer name: 'Task Scheduler Writer'
   Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
   Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
   State: [1] Stable
   Last error: No error
Writer name: 'VSS Metadata Store Writer'
   Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
   Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}
   State: [1] Stable
   Last error: No error
Writer name: 'Performance Counters Writer'
   Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2}
   Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381}
   State: [1] Stable
   Last error: No error
Writer name: 'System Writer'
   Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
   Writer Instance Id: {7848396d-00b1-47cd-8ba9-769b7ce402d2}
   State: [1] Stable
   Last error: No error
Writer name: 'Microsoft Hyper-V VSS Writer'
   Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
   Writer Instance Id: {8b6c534a-18dd-4fff-b14e-1d4aebd1db74}
   State: [5] Waiting for completion
   Last error: No error
Writer name: 'Cluster Shared Volume VSS Writer'
   Writer Id: {1072ae1c-e5a7-4ea1-9e4a-6f7964656570}
   Writer Instance Id: {d46c6a69-8b4a-4307-afcf-ca3611c7f680}
   State: [1] Stable
   Last error: No error
Writer name: 'ASR Writer'
   Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
   Writer Instance Id: {fc530484-71db-48c3-af5f-ef398070373e}
   State: [1] Stable
   Last error: No error
Writer name: 'WMI Writer'
   Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
   Writer Instance Id: {3792e26e-c0d0-4901-b799-2e8d9ffe2085}
   State: [1] Stable
   Last error: No error
Writer name: 'Registry Writer'
   Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
   Writer Instance Id: {6ea65f92-e3fd-4a23-9e5f-b23de43bc756}
   State: [1] Stable
   Last error: No error
Writer name: 'BITS Writer'
   Writer Id: {4969d978-be47-48b0-b100-f328f07ac1e0}
   Writer Instance Id: {71dc7876-2089-472c-8fed-4b8862037528}
   State: [1] Stable
   Last error: No error
Writer name: 'Shadow Copy Optimization Writer'
   Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
   Writer Instance Id: {cb0c7fd8-1f5c-41bb-b2cc-82fabbdc466e}
   State: [1] Stable
   Last error: No error
Writer name: 'Cluster Database'
   Writer Id: {41e12264-35d8-479b-8e5c-9b23d1dad37e}
   Writer Instance Id: {23320f7e-f165-409d-8456-5d7d8fbaefed}
   State: [1] Stable
   Last error: No error
Writer name: 'COM+ REGDB Writer'
   Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
   Writer Instance Id: {f23d0208-e569-48b0-ad30-1addb1a044af}
   State: [1] Stable
   Last error: No error
Please note:
Please only answer our question and do not offer any general optimization tips that do not directly adress the issue! We want the problem to go away, not to finish a bit faster!

Hallo Lawrence!
Thankyou for youre reply, some comments to help you and others who read this thread:
First of all, we use Windows Server 2012 and the VHDX as I wrote in the headline and in the text in my post. We have not had this problem in similar setups with Windows Server 2008 R2, so the problem seem to be introduced in Windows Server 2012.
These posts that you refer to seem to be outdated and/or do not apply to our configuration:
The post about Dynamic Disks:
http://technet.microsoft.com/en-us/library/ee941151(v=WS.10).aspx is only a recommendation for Windows Server 2008 R2 and the VHD format. Dynamic VHDX is indeed recommended by Microsoft when using Windows Server 2012 (please look in the optimization guide
for Windows Server 2012).
Infact, if we use fixed VHDX then we would have a bigger problem since fixed VHDX are generaly larger then Dynamic Disks, i.e. more data would be copied and that would take longer time = the VMs would be unresponsive for a longer time.
The post "What's the deal with the System Volume Information folder"
http://blogs.msdn.com/b/oldnewthing/archive/2003/11/20/55764.aspx is for Windows XP / Windows Server 2003 and some things has changed since then. for instance In Windows Server 2012, Shadow Copies cannot be controlled by going to Control panel -> System.
Instead you right-click on a Drive (i.e. a Volume, for instance the C drive/Volume) in Computer and then click "Configure Shadow Copies".
Windows Server 2008 R2 Backup problem
http://social.technet.microsoft.com/Forums/en/windowsbackup/thread/0fc53adb-477d-425b-8c99-ad006e132336 - This post is about the Antivirus software trying to scan files used during backup that exists in the System Volume Information folder and we do not
have any antivirus software installed on our hosts as I stated in my post.
Comment that might help us:
So according to “System Volume Information” definition, the operation you mentioned is Volume Shadow Copy. Check event viewer to find Volume Shadow Copy related event logs and post them.
Why?
Furhter investigation suggests that a volume shadow copy is somehow created even though the Schedule for Shadows Copies is turned off for all drives. This happens at random and we have not found any pattern. Yesterday this operation took almost all available
disk space (over 200 GB), but all the disk space was released when I turned on scheduled Shadow Copies for the CSV.
I therefore draw these conclusions:
The CSV Volume has about 600 GB of disk space and since Volume Shadows Copy used 200 GB, or about 33% of the disk space, and the default limit is 10% then I conclude that for some reason the unscheduled Volume Shadow Copy did not have any limit (or ignored
the limit).
When I turned on the Schedule I also change the limit to the minimum amount which is 320 MB and this is probably what released the disk space. That is, the unscheduled Volume Shadow Copy operation was aborted and it adhered to the limit and deleted the
Volume Shadow Copy it had taken.
I have also set the limit for Volume Shadow Copies for all other volumes to 320 MB by using the "Configure Shadow Copies" Window that you open by right clicking on a drive (volume) in Computer and then selecting "Configure Shadow Copies...".
It is important to note that setting a limit for Shadow Copy Storage, and disabaling the Schedule are two different things! It is possible to have unlimited storage for Shadow Copies when the Schedule is disabled, however I do not know if this was the case
Before I enabled Shadow Copies on the CSV since I did not look for this.
I now have defined a limit for Shadow Copy Storage to 320 MB on all drives and then no VHDX should be copied to System Volume Information since they are all larger than 320 MB.
Does this sound about right or am I drawing the wrong conclusions?
Limits for Shadow Copies:
Below we list the limits for our two hosts:
"Primary Host":
C:\>vssadmin list shadowstorage
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2012 Microsoft Corp.
Shadow Copy Storage association
   For volume: (\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\)\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\)\\?\Volume{e3ad7feb-178b-11e2-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (91%)
Shadow Copy Storage association
   For volume: (E:)\\?\Volume{dc0a177b-ab03-44c2-8ff6-499b29c3d5cc}\
   Shadow Copy Storage volume: (E:)\\?\Volume{dc0a177b-ab03-44c2-8ff6-499b29c3d5cc}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (0%)
Shadow Copy Storage association
   For volume: (G:)\\?\Volume{f58dc334-17be-11e2-93ee-9c8e991b7c20}\
   Shadow Copy Storage volume: (G:)\\?\Volume{f58dc334-17be-11e2-93ee-9c8e991b7c20}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (3%)
Shadow Copy Storage association
   For volume: (C:)\\?\Volume{e3ad7fec-178b-11e2-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (C:)\\?\Volume{e3ad7fec-178b-11e2-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 320 MB (0%)
C:\>cd \ClusterStorage\Volume1
Secondary host:
C:\>vssadmin list shadowstorage
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2012 Microsoft Corp.
Shadow Copy Storage association
   For volume: (\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\)\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\)\\?\Volume{b2951138-f01e-11e1-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 35,0 MB (10%)
Shadow Copy Storage association
   For volume: (D:)\\?\Volume{5228437e-9a01-4690-bc40-1df85a0e6736}\
   Shadow Copy Storage volume: (D:)\\?\Volume{5228437e-9a01-4690-bc40-1df85a0e6736}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 27,3 GB (10%)
Shadow Copy Storage association
   For volume: (C:)\\?\Volume{b2951139-f01e-11e1-93e8-806e6f6e6963}\
   Shadow Copy Storage volume: (C:)\\?\Volume{b2951139-f01e-11e1-93e8-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 bytes (0%)
   Allocated Shadow Copy Storage space: 0 bytes (0%)
   Maximum Shadow Copy Storage space: 6,80 GB (10%)
C:\>
There is something strange about the limits on the Secondary host!
I have not in any way changed the settings on the Secondary host and as you can see, the Secondary host has a maximum limit of only 35 MB storage on the CSV, but it also shows that this is 10% of the Volume. This is clearly not the case since 10% if 600
GB = 60 GB!
The question is, why does it by default set a too small limit (i.e. < 320 MB) on the CSV and is this the cause of the problem? I.e. is the limit ignored since it is smaller than the smallest amount you can provide using the GUI?
Is the default 35 MB maximum Shadow Copy limit a bug, or is there any logical reason for setting a limit that according to the GUI is too small?

Question on potential configurations for resource cluster as virtual machine server / beowulf / render farm

I am looking for a starting point on where to focus my efforts in researching a desired configuration. Of course anyone who spends anytime researching in forums knows that one thing that people hate is for people
to ask questions that can be easily answered with a simple Google search, so let me start by saying I have done many hours of research on this already. The problem I am having is that although there is a huge amount of information out there on what I
am looking to do, I don't believe many people have attempted this on as small of a scale as a single user system. Also, the amount of routes to go down seems endless, which for me so far has led to many hours of wasted trial and error. So keep
in mind that I am not so much looking for a handout on answers but rather a more narrowed path of searching and researching.
What I am looking to do is take the current equipment that I have and consolidate it into a 9-12U server rack using mounted 2 or 3U atx cases so that I can have a more organized, space saving setup. That is the
easy part, what I have been looking into though is the combining of cores and processing power to make a "super computer" yet I use this term very loosely. From what I have read, the closest thing I can compare the idea in my head to is referred
to as a Beowulf Cluster, or a Render farm but I believe as the name suggests that this is more dedicated to a single task of rendering. I like the idea of a virtual machine server where I would never actually locally use this machine but rather set up
many virtual machines that I can remote into. I started to compile a ProxMox Server, and this was the right idea, however when running a VM, that VM is constrained to the hardware resources of the single node that it is assigned to. If there is
a way to be able to have a machine that would utilize the 20 some odd cores that I would have in the cluster, along with the 40-50 gigs of ram, well that would be ideal but sounds too good to be possible. Also, ProxMox isnt quite there in compatibility for
a home/home office user. I understand that the programs that are used have to be written in a way where the architecture allows for such, but if it could even be used for speeding up my render time with Adobe and Autodesk (which I know do have such functionality)
that would be wonderful.
So without writing a whole book I am looking for suggestions on how to proceed. Can I literally build a "super computer" that is not really that super... more mediocre super... or am I better off just consolidating the hardware but not the
OS's and programs. Also, I do currently use three or four different distros of Linux, mostly for ethical hacking and security type work like pen testing. One thing I have never been a fan of though is dual booting. Perhaps investing
in a hot-swap HDD chassis that I could load all the different OS's on where I could just pop in whatever OS I am looking to use. As you can see I am far from knowing where to spend my efforts in research.... THANK YOu for ANY help.
I was recently suggested Microsoft HPC Pack as a platform? Anything?
Here is what I currently have:
these are all fully built)
Intel i5 3.7 quad core
Nvidia (ASUS) GTX-760
16 Gb DDR3 @ 1600 Corsair
ASUS Sabertooth Z87 MoBo
Autodesk - Inventor, Revit, 3Ds Max, Maya, Fusion 360, Flow, etc.
Adobe - PhotoShop, After Effects, Dreamweaver, Illustrator, etc.
Basically as you can see this is used for my work in 3d modeling, rendering, and drafting along with 3D printing.
Sys. #2
AMD 4.7-5.0 8 Core
Nvidia GTX 760 (Same as sys #1)
16 Gb DDR3 @ 2400 Mhz
ASUS Crosshair V Formula Z
Various programs for programming, app development, gaming, etc. (This is my daily driver)
Sys #3
AMD 4.5-4.7 8 core
16 Gb DDR3 @ 1600 Mhz
Asus Crosshair V Formula Z MoBo
Not currently using this one but is fully functional.
Sys #4
HP built i5 3.4 quad core
12 Gb DDR3 @ 1600
Nothing Special - this is the one I was using for school work but being that school and programming became one and the same I have all but abandoned it.
THANK YOU AGAIN TO ANYONE WHO HAS MADE IT THIS FAR in reading this.

The cluster works only for standalone webcache and httpserver installations types.
If you want to do this you have to use dcmctl command to change from one farm to another.
try checking with dcmctl command with out options an dyou will get a full list of options.
then run dcmctl usage(orhelp) option to see what you need.
As far as I remember
you have to check the farm id of the server you want to be the master
then in the second, you have to run dcmctl joinfarm or something like that.
Regards.

Oracle XE on multiple virtual machines on the same physical machine?

hi,
does oracle's licensing for 11g express edition prohibit running XE databases on multiple virtual machines on the same physical machine? if not, does the machine have to be "hard partitioned" per oracle specifications (link below) to make it legal?
http://www.oracle.com/us/corporate/pricing/partitioning-070609.pdf
i found a similar question regarding 10g express edition in the forum (link below), but it doesn't seem like the question was ever definitively answered.
Oracle XE on multiple virtual machines on the same physical machine?
thanks

I thought until I just checked that this was a clear cut no in that it specifies 'a single server'. Now I'm not sure as 'server' is an amibuous term. I at least know that as soon as you start giving developers access to theor own XE instance for dev/testing that there are many VM environments where you can't really know what physical macine your VM is running on to actually be able to tell if you had multiple XE instances running on a single 'Physical' server. I'm not sure the question has been answered by Oracle though.

Windows 8 Hyper-V - Virtual Machine Management Service failed to start the virtual machine

I have Hyper-v running on Dell Precision T3600 with Windows 8 OS. I am trying to start a VM (called Windows8VM) to install Windows 8 in the hyper-v virtual machine, but I keep getting the following message:
"Windows8VM" failed to start.
Failed to start the virtual machine "Windows8VM" because one of the Hyper-V components is not running.
"Windows8VM" failed to start. (Virtual machine ID D670D3BB-9AE2-0453D-9191-EA6EFC242A9C)
The Virtual Machine Management Services failed to start the virtual machine "Windows8VM" because one of the Hyper-V components is not running.
I have turned the hyper-v feature on in the "Turn Windows feature on or off. The BIOS has virtualization enable. Help!!! driving me nuts for a week now.
Nick :(

Okay, I turned off hyper-v, went to bios and enabled Intel TXT(LT-SX) Configuration. Made sure that both Virtualization and VT for Direct I/0 are on. Next, I turned on Hyper-V and I create a brand new Virtual Machine call Windows8 and had
the DVD point to Windows8 ISO file on hard drive. When I clicked on start, it stayed in the Starting status mode for about 5 minutes. Then of course it failed. I looked at the Hyper-V-VMMS log and here is what it output:
Log Name: Microsoft-Windows-Hyper-V-VMMS/Admin
1) Error: The virtualization infrastructure driver (VID) is not running.
2) Info: Found a certificate for server authentication. Remote access to virtual machines is now possible.
3) Info: Successfully started the Virtual Machine migration connection manager.
4) Info: Virtual Machine Management service is started successfully.
5) Info: The WMI provider 'VmmsWmiInstanceAndMethodProvider' has started.
6) Info: The WMI provider 'VmmsWmiEventProvider' has started.
7) Info: The WMI provider 'VmmsWmiInstanceAndMethodProvider' has started.
8) Info: The WMI provider 'VmmsWmiEventProvider' has started.
9) Info: The Integration Services Setup Disk image was successfully updated.
10) Error: The virtual machine bus is not running.
11) Error: 'Virtual Machine Bus' driver required by the Virtual Machine Management service is not installed or is disabled. Check your settings or try reinstalling the Hyper-V role.
12) Error: 'Storage Virtualization Service Provider' driver required by the Virtual Machine Management service is not installed or is disabled. Check your settings or try reinstalling the Hyper-V role.
13) Error: The Virtual Machine Management Service failed to start the virtual machine 'Window8' because one of the Hyper-V components is not running (Virtual machine ID 2B393AF4-7B7E-4243-805B-23C09D20F4FB).
14) Error: 'Window8' failed to start. (Virtual machine ID 2B393AF4-7B7E-4243-805B-23C09D20F4FB)
Nick

Importing Virtual Machines

I have a hyper-v server that got the BSOD so I reinstalled the OS and my machines were saved on another drive. I tried to import the vms but I can't get the network connectivity going. I created a virtual switch (VLAN 98 Port 1) but its not
allowing me to connect to anything from the virtual machine. Please help. Thanks.

NOC, I'll assume you're using Server 2012 R2 on your Hyper-V host.
I recommend the following steps:
- Verify your Hyper-V settings like:
It's domain joined (you'll need that for live-migration)
Check Hyper-V setting. Make sure your Virtual Hard Disk and Virtual Machine settings default to where you want them. Check Live-migration and storage migration settings. Make sure they match the standard set for your environment.
Check your Virtual Switch Manager settings. vSwitch name must match exactly the same vSwitch name on other Hyper-V hosts in your environment to allow live-migration. It's typically set as an external switch. Make sure it's connected the correct NIC from
the drop down menu (the one with access to VLAN 98 in your case). If you want to give the parent partition access to this VLAN check the Allow Management OS.. box. If your physical switch port is configured as truck port (no VLAN 802.1q tagging) check the
Enable VLAN ID.. box and enter the VLAN ID 98 below that.
- If we're talking about a handful of VMs (under 10), you can recreate them from scratch using the VHDX files. Point the VM disks to the existing disks. You don;t need any files from the old VMs except the VHD/VHDX files. Setup memory/cores/vNICs/... In
most environments you would have this documented some where.. Assuming your physical switch port is configured as trunk port, you would VLAN tag your frames for each VM NIC. Check the Enable VLAN ID and enter the VLAN ID.
Finally start the VM, log in with local admin credentials. The VM will have a new VNIC because of new MAC address presented by the new Hyper-V host. Enter the static IP desired, and verify communication (ping) other machines on the 98 VLAN.
- If we're talking about dozens or hundreds of VMs, I recommend using Powershell. Most of the scripts you'll need for this task can be found here http://superwidgets.wordpress.com/category/powershell/
samb

Connecting oracle database remotely

Hi,
my oracle database is installed on a virtual machine (guest machine)
now I want to connect it to my IBM Rational S/W Architect IDE thats installed on my host machine
I have only installed OC4J on my host machine but can't connect to the database
can anyone pls guide me with this configuration issue??
Message was edited by:
jayant

Thanks David,
the IDE has picked up the drivers and the argument string without any trouble.
but I'm afraid that the errors are not over yet!!
this time the IDE seems to be trying to establish the connection with the database on the virtual machine, but fails mid-way
Moreover, i got to know about some interesting thing about this virtual machine.(I'm using VMWare Server as a virtualisation tool and its a NAT driver which shares the IP address of my host machine)
when i check the IP addresses of my physical machine by ipconfig, i get :
Windows IP Configuration
Ethernet Adapter VMWare Network Adapter VMnet8:(this is the n/w adapter that
i use to get connected with my physical machine)
connection-specific DNS suffix:
IP Address: 192.168.126.1
Subnet mask: 255.255.255.0
Default Gateway:
Ethernet Adapter VMWare Network Adapter VMnet1:
connection-specific DNS suffix:
IP Address: 192.168.5.1
Subnet mask: 255.255.255.0
Default Gateway:
Ethernet Adapter Local Area Connection 2:
Media State: Media disconnected
Ethernet Adapter Wireless Network Connection 2:
connection-specific DNS suffix: domain_not_set.invalid
IP Address: 192.168.1.72
Subnet mask: 255.255.255.0
Default Gateway: 192.168.1.1
when i check for the IP Addresses of the virtual machine(Win XP Pro) thats installed on VMWare Server, i get
Windows IP Configuration
Ethernet Adapter Local Area Connection:
connection-specific DNS suffix: localdomain
IP Address: 192.168.126.128
Subnet mask: 255.255.255.0
Default Gateway:192.168.126.2
now the error that's being flashed is:
connection to GPS_NODE failed. IWAS0126E Problems encountered while trying to establish connection conn1. Reason: IOException: The Network Adapter could not establish the connection
I suspect that there is some configuration issue with the network adapters but can't figure out How to rectify that :(
pls help

Windows 10 Technical Preview - There is NO "Hyper-v Virtual Machine Management" service???

hi all,
There's no such Windows Topic as "WTP Virtualization", so I post this thread here, a somewhat "VIRTULIZATION" related.
I installed WTP (not server) x64 enterprise 9879, and added "Hyper-v Management" feature (management only, without Hyper-v core) in Control Panel. Then I found that there was no "Hyper-v
Virtual Machine Management" in Services panel, and there was no such file "c:\windows\system32\vmms.exe". Therefore I cannot connect to Windows Server 2012 R2 Hyper-v through WTP Hyper-v Manager.
I confirm the reason is what I state above. Firewall rules are properly configured on both Hyper-v server and WTP. I also used hvxxxx.wsf to configre anondcom to be "allow". When
I connect WS 2012 R2 through WTP, Hyper-v manager on WTP says "Please confirm VMMS server is running".
Is it a bug, or lack of implementation, or restriction of preview edition?
Any suggestion is appreciated! Thanks!

Okay, I turned off hyper-v, went to bios and enabled Intel TXT(LT-SX) Configuration. Made sure that both Virtualization and VT for Direct I/0 are on. Next, I turned on Hyper-V and I create a brand new Virtual Machine call Windows8 and had
the DVD point to Windows8 ISO file on hard drive. When I clicked on start, it stayed in the Starting status mode for about 5 minutes. Then of course it failed. I looked at the Hyper-V-VMMS log and here is what it output:
Log Name: Microsoft-Windows-Hyper-V-VMMS/Admin
1) Error: The virtualization infrastructure driver (VID) is not running.
2) Info: Found a certificate for server authentication. Remote access to virtual machines is now possible.
3) Info: Successfully started the Virtual Machine migration connection manager.
4) Info: Virtual Machine Management service is started successfully.
5) Info: The WMI provider 'VmmsWmiInstanceAndMethodProvider' has started.
6) Info: The WMI provider 'VmmsWmiEventProvider' has started.
7) Info: The WMI provider 'VmmsWmiInstanceAndMethodProvider' has started.
8) Info: The WMI provider 'VmmsWmiEventProvider' has started.
9) Info: The Integration Services Setup Disk image was successfully updated.
10) Error: The virtual machine bus is not running.
11) Error: 'Virtual Machine Bus' driver required by the Virtual Machine Management service is not installed or is disabled. Check your settings or try reinstalling the Hyper-V role.
12) Error: 'Storage Virtualization Service Provider' driver required by the Virtual Machine Management service is not installed or is disabled. Check your settings or try reinstalling the Hyper-V role.
13) Error: The Virtual Machine Management Service failed to start the virtual machine 'Window8' because one of the Hyper-V components is not running (Virtual machine ID 2B393AF4-7B7E-4243-805B-23C09D20F4FB).
14) Error: 'Window8' failed to start. (Virtual machine ID 2B393AF4-7B7E-4243-805B-23C09D20F4FB)
Nick

Connecting one database to many virtual machines

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