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Q: Best way to synchronize file servers

November 29, 2018, 1:53 am
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Hello Admins,

currently we have about 20 Windows Server 2012 R2 as file servers, which are replicated via DFS-R. The servers are distributed worldwide and the replication takes forever (several days). In addition, only the file server in the head office is writable, so that no chaos arises.  But a new solution is needed! How would you synchronize 20 file servers worldwide and make each of them writable?

- For Azure Files we have too much data (about 12 TiB).

- Which solution can you think of?

I am looking forward to your feedback!



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Storage Spaces Direct Cluster Aware Updating Behaviour

May 17, 2017, 5:20 am
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We have a 4 node S2D Hyperconverged cluster.

When running Server 2016 CAU on the cluster the Microsoft documentation tells us that it is S2D aware and that it will only reboot a cluster node when the storage is healthy.

We are not seeing this behaviour, S2D is rebooting nodes while the S2D virtual disks are listed as degraded and repair jobs are still in progress. Are their any known issues or hotfixes available for this?

For information, we are running the CAU gui wizard from a Server 2016 OS virtual machine.

Microsoft Partner


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Storage Spaces Direct and Diskpart Automount Policy

November 29, 2018, 1:19 pm
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We're using storage spaces direct as a disk target for backup storage.  Our backup product has a direct SAN attached method for backup of VMware virtual machines versus using a proxy that uses HotAdd to send the data over the network.  This is where the Windows OS has block level access to the storage but doesn't need to mount it.  My intent was do to this with HBAs in the physical machines hosting the storage spaces direct volumes.

The requirements for the direct SAN attached storage are to disable the automount feature in Windows.  There's a variety of ways to do this, I would use DISKPART commands:

DISKPART> AUTOMOUNT DISABLE

What I can't find is any documentation anywhere if this is a supported configuration to disable automount in a storage spaces direct cluster.  The only thing I know for sure is that the storage spaces direct cluster as setup currently has this feature enabled.

I think it would be OK to disable it since the volumes are controlled by the cluster service and I'm fairly certain that handles the mounting of volumes for CSV and any other virtual disks directly associated with roles controlled by the cluster.

I'm also not sure this forum is the correct one for storage spaces direct questions, and I'd appreciate a point in the right direction on where to post if it isn't.


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diskperf and task manager and mounted volume - How to force task manager to also show MOUNTED VOLUMES?

November 26, 2018, 8:58 am
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diskperf and task manager and mounted volume - How to force task manager to also show MOUNTED VOLUMES?

I have a Win2012 Server using a secondary volume mounted as c:\DATA insted using drive letters

when i use task manager i can see the C: drive and i ALSO can see the C:\DATA volume and it sperformance information on task manager

But in several other windows servers, also using mounted volumes, the task manager does not show any mounted folder expect the volumes using "simple" letters, like "D", "E:", "V:" and so on

After some tests, i discovered something weird, but i couldn´t reproduce the problem

if i hit a DISKPERF -YD at the first attempt, this machine can show mounted volumes on task manager, but if i try not to use diskperf -YD at the firsta attempt, firts using diskperf -Y or other combination.. task manager NEVER shows the mounted volumes

y settings i´m trying to compare some registr like HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\partmgr, but the parameter  EnableCounterForIoctl is identical on both machines (i checked using procmon, is the reg key sued by diskperf commands)

so, the final issue is: Why can t I enable my mounted volumes on TaskManager in several servers?



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Storage Spaces Direct Dirty Count Greater Than Limit - Volume is Online

November 30, 2018, 11:13 am
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From reading on troubleshooting and a long support call the Storage Spaces Drt counters for a storage spaces direct volume are never supposed to be greater than the limit.  If the limit is breached then the volume is supposed to stay offline.  I have noticed that some volumes go offline when I reboot a cluster node after putting it into maintenance in failover cluster manager.  I haven't yet had an opportunity to try it yet, but there are a few commands to run.

Get-StorageFaultDomain -type StorageScaleUnit | Where-Object {$_.FriendlyName -eq "cl-hv03"} | Enable-StorageMaintenanceMode

https://social.technet.microsoft.com/Forums/en-US/4fc1fb86-61fa-4976-8b3f-9e314586fef8/storage-spaces-direct-cluster-virtual-disk-goes-offline-when-rebooting-a-node?forum=winserverClustering

I have KB4462928 installed on all the cluster nodes as well.

Where this really gets interesting is that I have a volume that is online with a dirty count greater than the limit, and I'm not sure how this is possible and if there is a way to clear the DRT backlog.  Even when nothing is writing to the volume, it stays above 270 when the limit is 255.

I'd post links and screen shots but my account hasn't been verified yet.

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Storage Pool wrongly reporting not enough space to move files

December 1, 2018, 5:08 am
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Hi.

I am running a Windows Server 2016 machine with 4x 8TB and 2x 10TB drives in a storage pool.
While trying to move data from one virtual disk witch is a parity volume, over to another virtual disk witch is a simple volume, i get an error:
There is not enough space on xxxxx.

18,2GB is needed to move this item. Delete or move files so you have enough space
The virtual drive has 13,2TB free space both on the partition AND on the virtual drive.

There is 3,47TB available space on the pool.

HDD1 7,28TB - free space: 637GB

HDD2 7,28TB - free space: 727GB

HDD3 9,10TB - free space: 0,00B

HDD4 9,10TB - free space: 125GB

HDD5 7,28TB - free space: 612GB

HDD6 7,28TB - free space: 643GB

Why is HDD3 full, and why is it reporting that i do not have enough space to move files?
I have tried running "Optimize-StoragePool". I have also tried running SlabConsolidate, and with no success.

The health of all HDD's are good.

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Lost communications on a server pool

December 1, 2018, 6:01 am
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Hello all,

I just started with server pools.  

I have 1 4T and 4 1T drives.

I have made a simple pool for the 4 1T drives to be added together.

I went and took out 1 of the drive (hot swap) and after putting it back in the Virtual drive was at 0 byes.

So I looked at the pools and noticed that the drive I pulled out and put back in has lost communications.

I have done a reboot to try to get it back online.

The drive is still good.

Did not find anything on lost communications on a simple layout.

I am looking for anyway to get this back into a health status.

Thanks Kurt 


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Latest ISCSI Target LocalMount Adapter for Windows 2012r2

December 1, 2018, 12:05 pm
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My team is currently setting up a Windows 2012r2 Server as a ISCSI target.   The drivers under device manager for the Latest ISCSI  Target LocalMount Adapter have a date of 6/21/2006 and are version 6.3.9600.16384.    Are these the latest drivers available, and if not, how can we obtain newer drivers?

Thank you for your help.

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DFS Server Replication Issue

November 26, 2018, 10:54 pm
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Hi 

We have 2 DFS server on different site: DFS01 and DFS02 (windows server 2012 R2)

Replication has stopped with below error:

DFS01 Error: 

 

The DFS Replication service has been repeatedly prevented from replicating a file due to consistent sharing violations encountered on the file. The service failed to stage a file for replication due to a sharing violation. 

Additional Information: 
File Path: 
Replicated Folder Root: E:\Folder
File ID: {1EA4CD42-7FB9-4CDF-BE9F-F4BEAF31902F}-v3878875 
Replicated Folder Name: Folder
Replicated Folder ID: 45C57474-9497-40E6-8F92-B1681CD081CA 
Replication Group Name: Repl-Folder
Replication Group ID: 8CD65923-1774-4F3A-9507-B52559183367 
Member ID: 2174D4D6-DD03-4C08-9F9A-607B822002F5

Event ID: 4304

DFS02 Error:

    

The DFS Replication service encountered an error communicating with partner DFS01 for replication group Repl-Folder. 

Partner DNS address: dfs01

Optional data if available: 
Partner WINS Address: DFS01 
Partner IP Address: xx.xx.xx.xx 

The service will retry the connection periodically. 

Additional Information: 
Error: 1726 (The remote procedure call failed.) 
Connection ID: A0CD6F5E-4994-42D9-BA45-419F0148BC2E 
Replication Group ID: 8CD65923-1774-4F3A-9507-B52559183367

Event ID: 5002

Please assist me to resolve the issue.



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SMB Multichannel is slower than disabled

March 10, 2018, 7:35 am
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Hello,

I am building a test following this blog https://blogs.technet.microsoft.com/josebda/2012/06/28/the-basics-of-smb-multichannel-a-feature-of-windows-server-2012-and-smb-3-0/

Server:

windows server 2016

i5 6500, 2x 1G NIC(no rss, no rdma)

Client:

Windows 10

i5 6600, 2x 1G NIC(no rss, no rdma)

Both server and client are running:

Set-SmbServerConfiguration -EnableMultiChannel $true
Set-SmbClientConfiguration -EnableMultiChannel $true

and, the results are:

1. server & client 2 NICs enable

I can get total 600-800Mbps, every 1 NIC is 300-400 Mbps.

2. server 2 NIC enable, client 1 NIC enable, 1 NIC disabled

total speed is also 600-650Mbps, 1 NIC is 600-650Mbps, another is 0Mbps.

But, if I disabled multichannel in both side, I can get 940-950Mbps speed by 1 NIC.

So, how to get >1Gbps speed from 2 NICs?


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Deny Format of Drives for Admins

November 25, 2018, 11:41 pm
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Hi

We have multiple LUNs / Drives on Windows servers using as backup repositories. We removed all NTFS permissions from these drives except for System and backup works fine. Now our concern is to how to deny anyone including Admins to encrypt / format the disks (this happen before during a malware outbreak). If we get an option for this or a workaround for this issue, then it will be great.

Thanks in advance

LMS

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DFSRs errors

November 25, 2018, 6:06 am
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Hello,

I found many errors on our event viewer related to DFS.
Do you know any solutions or what the possible error can be? 
When i check the disks they are all healthy. 

DFSRs (9420) \\.\D:\System Volume Information\DFSR\database_76D2_8381_D283_43F9\dfsr.db: A request to write to the file "\\.\D:\System Volume Information\DFSR\database_76D2_8381_D283_43F9\dfsr.db" at offset 1335164928 (0x000000004f950000) for 40960 (0x0000a000) bytes has not completed for 36 second(s). This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

DFSRs (9420) \\.\D:\System Volume Information\DFSR\database_76D2_8381_D283_43F9\dfsr.db: A request to write to the file "\\.\D:\System Volume Information\DFSR\database_76D2_8381_D283_43F9\dfsr.db" at offset 378175488 (0x00000000168a8000) for 32768 (0x00008000) bytes has not completed for 36 second(s). This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem

DFSRs (11080) \\.\D:\System Volume Information\DFSR\database_76D2_8381_D283_43F9\dfsr.db: A request to write to the file "\\.\D:\System Volume Information\DFSR\database_76D2_8381_D283_43F9\fsr.log" at offset 741376 (0x00000000000b5000) for 4096 (0x00001000) bytes succeeded, but took an abnormally long time (18 seconds) to be serviced by the OS. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

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File Server Migration from Server 2008 to Server 2016

November 21, 2018, 6:33 am
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Hi,

Is there a better way to migrate File Server from 2008 R2 to Server 2016 and keeping NTFS and shares permission and the structure same?

I am not sure if the robocopy would do what I need?

ROBOCOPY "\\2008\E$" "\\Server2016\E$" /MIR /SEC /LOG:C:\logfile

Has anyone migrated from Server 2008 to Server 2016?

Thanks,

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S2D- Uncorrected Read Errors on Disks

November 26, 2018, 9:37 am
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Hi,

I have a 4 node 2-way mirror resi. and I see the following on some of the disks. Is this going to effect the performance or/and disk is about to fail?

Get-PhysicalDisk | Get-StorageReliabilityCounter | ? Readerrorsuncorrected -gt 0

DeviceId Temperature ReadErrorsUncorrected Wear PowerOnHours
-------- ----------- --------------------- ---- ------------

2009                 310                   0    2827
1004                 28                    0    2802
3003                 31                    0    3430
4006                 63                    0    2826
1014                 145                   0    2802
2010                 5                     0    2827
1008                 45                    0    2802
2003                 1                     0    2827
3005                 1                     0    2645
2012                 213                   0    2827
2007                 5                     0    2827
4008                 1                     0    2826
3012                 378                   0    3430
4011                 13                    0    2826
4005                 12                    0    2826
3010                 6                     0    3430
1012                 74                    0    2802

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DFS NAME SPACE - The specified path is invalid

June 23, 2015, 3:33 am
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Please help: 

I have four dfs servers and replications as mesh. 
Each time I try to add the 4th server to the namespace it failed with 
“The namespace server \\server\dir cannot be added. The specified path is invalid”

DFS NAMESPACE

DFS NAMESPACE ERROR

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Will Storage Replica Source Log wrap during a large data copy?

December 2, 2018, 10:58 pm
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Hi,

If I setup Storage Replica with Asynchronous replication and then start copying data to the replicated volume, it will write it to the source log volume and then to the source data volume. The default size of the source log is 9 GB. If I write data so quickly that this log fills my understanding is that it will 'wrap' which will result in a bit map replay from source --> target. I need to understand this a bit better.

  1. Is the length of time required for a bit map replay related to the amount of new data, the total amount of data, or the size of the volume?
  2. If I write data so quickly that the log continually wraps, does it restart a bit map replay?
  3. What is the best practice for copying data to the volume?

So my question is really about seeding. I am aware that I can seed to a local volume and then ship the disks or backup to the destination location (remote) however this is not always practical. Assuming I can't do that, what would be better for speed and network performance:

  1. Setup SR, then copy the data to source? (as above)
  2. Copy the data to source, then setup SR?
  3. Copy the data to source, robocopy /mir to destination, then setup SR?

There will be terabytes of data.

Thx,

Simon.


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Request help to understand DDEVAL report

December 3, 2018, 2:09 am
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Dear All,

While running the DDEVAL tool, it gives a result with "no compression". I want some help on what to derive from values shown against "no compression".

There comes different types of understanding from different forums about this term, which is not concluding to one answer.

Can somebody provide actual understanding of this term while reported by DDEVAL tool?

Thanks,

Amit Jogi


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Scale-Out File server Snapshot issue

November 27, 2018, 2:27 am
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Hi,

I have Configured a Failover cluster with two nodes running Server 2012 R2 that point to a common Scale-out File server storage location running 2012 R2. I have also enable the Fille server VSS Agent in roles. When try to take Snapshot of Scale Out file server I end up with error often.

Below are the random error I face when I run "Add volume \\scaleout\server" from diskshadow,

1. Error text: VSS_E_SNAPSHOT_SET_IN_PROGRESS

2. The provider does not support volume shadow copies for this volume in this context.

You must either change the context or add a different volume.

Note that changing the context might cause existing volumes in the shadow copy set to become unsupported.

I have installed all the hot fix to keep OS up to date. Please let me know what I am missing?

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Unable to create VMs in Scale out file share UNC path and Snapshot failure for Scale out file server

December 3, 2018, 2:19 am
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Hi Support,
I have followed the below link to setup a Scale-out file server for a Fail over cluster setup that has 3 nodes all running Windows server 2012 R2 (ALL Updates installed)
We face two issues in the above setup,
1. Scale out file server snapshot fails often. I followed the below setup for snapshot from cluster added node, (File share VSS agent is installed and All hotfixes are updated.)
DISKSHADOW> Set Context Persistent
DISKSHADOW> Set MetaData vm1backup.cab
DISKSHADOW> Begin Backup
DISKSHADOW> Add Volume \\scalefileserver\scalefileserver
DISKSHADOW> Create
Below are the errors,
-> VSS_E_VOLUME_NOT_SUPPORTED
-> The provider does not support volume shadow copies for this volume in this context.
You must either change the context or add a different volume.
Note that changing the context might cause existing volumes in the shadow copy set to become unsupported.
-> VSS_E_SNAPSHOT_SET_IN_PROGRESS
2.  While creating VM that stores the VHDX and config file in the Scale-out file server shared location using UNC path, VM creation fails with "General Access denied error". Below is full error message,
[Window Title]
New Virtual Machine Wizard
[Main Instruction]
The Virtual Machine Management service encountered an error while configuring the hard disk on virtual machine UNCPath.
[Content]
Failed to add device 'Virtual Hard Disk'.
The Machine Account 'HYPERV2012\CLUSTERNODE1$' or the user initiating the VM management operation or both do not have the required access to the file share '\\scalefileserver\scalefileserver\ScalefileserverVM\133_NewVM.vhdx'.  Please ensure that the computer machine account and the user initiating the VM management operation have full access to the file share as well as the file system folder backing the file share.  Error: 'General access denied error'
[Expanded Information]
'UNCPath' failed to add device 'Virtual Hard Disk'. (Virtual machine ID FEAE95C0-9C2C-4CC9-AE63-D76C1047CB1B)
'UNCPath': The Machine Account 'HYPERV2012\CLUSTERNODE1$' or the user initiating the VM management operation or both do not have the required access to the file share '\\scalefileserver\scalefileserver\ScalefileserverVM\133_NewVM.vhdx'.  Please ensure that the computer machine account and the user initiating the VM management operation have full access to the file share as well as the file system folder backing the file share. Error: 'General access denied error' (0x80070005). (Virtual machine ID FEAE95C0-9C2C-4CC9-AE63-D76C1047CB1B)

[^] Hide details  [Close]

Thanks for the help.

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Windows Search indexing limits

March 18, 2016, 2:29 pm
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I'm working on setting up a new Windows 2012 R2 file server and using to share and index about 1.4 TB / 1.5 million files. I have the Windows Search service installed as well as the Adobe and Microsoft Office iFilters.

The search service has repeatedly made it to about 900k items indexed before starting over at 0. The following errors also show up in the event logs:

Search error 7040

The search service has detected corrupted data files in the index {id=4810 - enduser\mssearch2\search\ytrip\tripoli\inverted\decodinglayer.cpp (478)}. The service will attempt to automatically correct this problem by rebuilding the index.
Details:
    The data is invalid.   0x8007000d (0x8007000d)

Search error 7042

The Windows Search Service is being stopped because there is a problem with the indexer: The catalog is corrupt.

Details:
    The content index catalog is corrupt.   0xc0041801 (0xc0041801)

Are there any known issues or limits with indexing this much data?

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