Hyper-v Cluster and new AD organisation.
Hello everyone.
We have a very very bad situation.
In one of our new customers we get the following configuraion.
Organisations AD was corrupted and lost
there are Hyper-v nodes WinSrv2012 in failover cluster hosted on 8x HP c7000 blade system
there is HP P2000 datastore 49.5 Tb full size.
there isn't VMM (please don't ask me "Why"
2 CSV volumes pesented to cluster (i suppose via Failover cluster services)
And the worst thing we actually don't have any backups. I suppose previous local administrators were irresponsible.
So we have the following behavior of system
We don't able to move Virtual machines between nodes even manually.
DAtastore is full. We cannot create new LUN because All disks are used.
There are too many critical VM's which couldn't be stopped for a long time.
I have new AD but i can not rejoin nodes to the new domain because almost all node contain critical machines and as i told i can not move ones to another node as well. Also i cannot do it because in this case moved node will deleted from Failover cluster so
in this case i can damage csv volumes.
Actually i can turn off each VM for a little time.
So i have a question. What is the best solution in this situation. can i use for migrate all hyper-v infrastructure to new AD but keep all most part VHD's in place.
Sorry for my EN. And Thank you in advance.
Ouch, this is a horrible situation.
My advice would be that you
1. Connect a new Hyper-V host to the new domain (You can disconnect one from your old cluster, format it and connect it to the new domain).
2. Configure it as a new cluster, this can be performed with one node.
3. Copy the VM's from the old cluster to the new cluster. Your going to need to work out a way to have enough free space to perfrom this. I would try using local disk space to free up a Lun then assign that Lun to the new cluster. Continue copying untill
another Lun free's up and so on.
4. After all VM's are copied and imported to new Hyper-V you can format the second cluster node and join it to the new cluster.
5. Your going to have to re-join every VM manually to the new domain.
Hope this gives you some insight on a solution for your problem.
Good Luck!
Gil Gross | Technical Lead | G-Net Network Solutions | www.g-net.co.il | plz visit my blog - gilgrossblog.wordpress.com
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All based on wind2012 R2 STD English versionI have 2 X M600 Dell Blades (100 GB local storage and 2 NICs) and a Single R720 File Server (2.5 TB local SAS storage and 6 NICs). I´m planning a Lab/developer enrironment using 2 Hyper-V Servers with Failover Cluster and a single File Server putting
all .VHDs stored on a SMB 3 Share on the File Server.
The ideia is to have a HA solution, live migration, etc, storing the .VHDs onm a SMB 3 share
\\fileserver\shareforVHDs
It is possible? How Cluster will understand the
\\fileserver\shareforVHDs as a cluster disk and offer HA on it?
Or i´ll have to "re-think" and forget about VHDs on SMb 3 Share and deploy using iSCSI?
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All based on wind2012 R2 STD English version
You can do what you want to do just fine. Hyper-V / Windows Server 2012 R2 can use SMB 3.0 share instead of a block storage (iSCSI/FC/etc). See:
Deploy Hyper-V over SMB
http://technet.microsoft.com/en-us/library/jj134187.aspx
There would be no shared disk and no CSV just SMB 3.0 folder both hypervisor hosts would have access to. Much simplier to use. See:
Hyper-V recommends SMB or CSV ?
http://social.technet.microsoft.com/Forums/en-US/d6e06d59-bef3-42ba-82f1-5043713b5552/hyperv-recommends-smb-or-csv-
You'll have however a limited solution as your single physical server being a file server would be a single point of failure.
You can use Storage Spaces just fine but you cannot use Clustered Storage Spaces as in this case you'll have to take away your SAS spindles from your R720 box and mount them into SAS JBOD (make sure it's certified). So you get rid of an active components
(CPU, RAM) and keep more robust all-passive SAS JBOD as your physical shared storage. Better then a single Windows-running server but for a true fault tolerance you'll have to have 3 SAS JBODs. Not exactly cheap :) See:
Deploy Clustered Storage Spaces
http://technet.microsoft.com/en-us/library/jj822937.aspx
Storage Spaces,
JBODs, and Failover Clustering – A Recipe for Cost-Effective, Highly Available Storage
http://blogs.technet.com/b/storageserver/archive/2013/10/19/storage-spaces-jbods-and-failover-clustering-a-recipe-for-cost-effective-highly-available-storage.aspx
Using
Storage Spaces for Storage Subsystem Performance
http://msdn.microsoft.com/en-us/library/windows/hardware/dn567634.aspx#enclosure
Storage
Spaces FAQ
https://social.technet.microsoft.com/wiki/contents/articles/11382.storage-spaces-frequently-asked-questions-faq.aspx
Alternative way would be using Virtual SAN similar to VMware VSAN in this case you can get rid of a physical shared storage @ all and use cheap high capacity SATA spindles (and SATA SSDs!) instead of an expensive SAS.
Hope this helped :)
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Hi all,
I have just setup a fresh Windows 2012 R2 Hyper-V cluster with 4 nodes.
Config:
Network:
2 x Networks for iSCSI
1 x VM network 1
1 x VM network 2
1 x Heartbeat
1 x LiveMigration
Disks:
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According to your discription , you can try to monitor and analyse the traffic of LM via network monitor for troubleshooting .
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http://technet.microsoft.com/en-us/library/cc723623.aspx
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Hi,
I am planning to configure scvmm 2012 r2 that will be managing 30 hyper-v host servers, please guide me will it be ok if i install and configure both scvmm 2012 r2 and sql server 2012 on same VM running on Hyper-V Failover Cluster ?
Regards,
Afzal
[email protected]Hi,
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Most of the time, VMM don't need a guest cluster (unless you are a hosting provider with provisionning portal
available 24/24 7/7).
The main advice i will give you is :
Keep it simple as possible !
Don't build complex infrastructure if you don't need to achieve a very hight level of availability.
Availability, complexity and management cost have a exponential relation.
For large deployment, you can use a dedicated Hyper-V cluster to deploy System Center and infrastructures services (SCVMM, SCOM etc...) But there is nothing wrong in deploying VMM in the same cluster as the VM it manage. The design you have to achieve should
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Cheer.
Cedric.
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