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AHV Virtualization

Webscale Virtualization for the Enterprise

  • 660 Topics
  • 2,154 Replies
660 Topics
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OnderAvcuAdventurer
posted in AHV Virtualization
Migrate from VMware to AHV - stuck Booting from Hard Disk...

I am migrating from ESX 6.0 to AHV 5.1.2I have successfully mounted the container from VMware and migrated a disk. When trying to start the image from the vmdk file in Prism Console than I get the following error: Booting from Hard Disk... in the boot dos screen. Regards, Onder Avcu

740821
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5 years ago
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CTITrailblazer
posted in AHV Virtualization
Windows Boot F8 Delay

Hi, When using AHV, is there a way to set the black (pre-boot) screen in the VM duration longer. I was trying to press the F8 key, to get into directory restore mode/safe mode, but the black (pre-boot) screen raced by... Thanks G

83325
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5 years ago
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GrantJamiesonVoyager
asked in AHV Virtualization
Swap memory on hybrid Nutanix Cluster (i.e. SSD+HDD)

Hi all, I am new to Nutanix and am looking for best practices around swap space on Nutanix AHV VMs. Having SSD drives it is understood swap (writes) will decrease hardware life. Can swap be allocated only to HDD drives only and/or is it best to use a low swappiness value to lower the amount of swaps? Thanks,

14623
ddubuque
5 years ago
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Nutanix Employee
chhedaNutanix Employee
posted in AHV Virtualization
Compute Only Notes in AHV

@joshodgers has posted an interesting blog on his site on a new AHV feature -- Compute Only nodes. The concept of Compute Only node will enable infra teams to give their application and DB admin counterparts more CPU/Memory per node. Nutanix clusters can now be made up of compute only and storage only nodes minimizing if not eliminating any licensing concerns they had in the past for workloads like Oracle, SQL Server etc. Best practices for setting high performance databases will be coming soon. Reply back in this thread to let our Database SMEs know if you have specific questions you'd like them to address in their best practices. Excerpts from his blog -- http://www.joshodgers.com/2019/02/20/solving-oracle-sql-licensing-challenges-with-nutanix/ >> Compute only nodes compliment the traditional HCI nodes (Compute+Storage) as well as our unique Storage Only Nodes which were introduced in mid 2015. >> Compute Only allows scale up and out of CPU/RAM resources where applicatio

15583
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5 years ago
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Didi7Trailblazer
asked in AHV Virtualization
VCPU(S) vs. Number Of Cores Per vCPU

Hello everybody, let's assume we have one Nutanix block with 3 nodes. In each node we only have 1 CPU socket with 10 Cores. A VM can only run on one node. So, in this case, wouldn't it make more sense to let a VM with 4 CPUs run on 1 VCPU and 4 Cores, instead of 4 VCPUs with 1 core, as each node has only 1 CPU socket? Or does Nutanix always recommend to use only 1 Core per VCPU not matter how much CPU sockets are available in a node? Best regards, Didi7

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5 years ago
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galad2003Adventurer
asked in AHV Virtualization
Cluster Memory Usage

So how much do you run your cluster memory usage? Currently we are at 50% usage but still adding VM's. My boss wants to run this to 100% and doesn't understand why I keep telling him this is a bad idea. I am trying to keep it at 2/3 to 3/4 usage of capacity. Am I right or wrong on this? I am doing a bad job of explaining this to my boss who doesn't seem to believe me so do you guys have any resources that can help me explain this? Right now we are running application servers and no core functions but we are looking to migrate our DHCP servers. We have 1.1 TB of memory capacity running at 51% usage. CPU usage is not a problem running at about 12%. Storage is also fine. We are running 6x Dell 740XC if that helps.

50931
ddubuque
5 years ago
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petepAdventurer
asked in AHV Virtualization
Nested HyperV on AHV

Has anyone successfully been able to get HyperV(or ESXi) nested under AHV? I do see nested KVM VM's are supported but no mention of anything else. Only reason for exploring this is to get Cisco Umbrella VA's working under AHV so i don't have to re-purpose an old server to run HyperV/ESXi.

18975
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5 years ago
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Adam NCGPathfinder
asked in AHV Virtualization
iSCSI Networking

Hi I'm looking to created clustered files servers using Windows Server Failover Clustering - VMs will be in-guest, i'm using AHV. My understanding that presenting the Nutanix storage via iSCSI to WSFC servers is supported however i'm confused about how to setup the networking and the Nutanix ABS documentation doesn't make this clear. I'm used to creating a separate storage network / VLAN for all storage traffic however the iSCSI target IP address is recommended to be on the same network as the CVMs / all of the Nutanix infrastructure. So the question is do i create a separate network for storage and have it route to the iSCSI target IP address, or have the iSCSI initiators on the same network as the iSCSI target / data services IP? It wouldn't seem logical to mix the CVM traffic with storage traffic, however also not great to have to route storage traffic. Thanks Adam

23732
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5 years ago
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petepAdventurer
asked in AHV Virtualization
Running OpenDNS VA in AHV

We attempted to migrate our ODNS as well as setup new VM's in AHV by extracting the vmdk's but each time we get the below screen on boot. Has anyone else successfully got the ODNS VA to run in AHV? I've tried editing the vm's xml file to change the video type and vram but no luck as of yet:

233311
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5 years ago
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chunyen2020Voyager
asked in AHV Virtualization
How to "size" a Nutanix cluster based on performance requirement?

Hi guys, we're planning to move/migrate my MS SQL workload from physical standalone host to a new Nutanix cluster. We already engaged with local Nutanix representative for this. However, we encountered a few hurdles in terms of performance during and we can't be sure whether we have the right sizing for our performance requirement. Current Production Physical host:- Processor: Intel Xeon E5-2690v3 @ 2.6GHz (single socket, 12C 24T) RAM: 96GB (However only 64GB usable for the MS SQL 2008R2 DB) Disks: Database MDF resides in a SSD RAID 5 diskgroup. (6 disks), OS and LDF etc resides in other disk groups, SAS disks 10K, 15K RAID 10, RAID 1 etc. Test Unit ( 3 nodes):- Processor: Intel Xeon E5-2650 v4 @ 2.2 GHz (dual socket, 24C 48T) per node RAM: 512GB per node Disks: 6 x 1.6TB Intel S3610 SATA (All Flash) Hypervisor: AHV 5.9.2.4 Network: 10GbE RJ45 SQL Test VM created in Nutanix test cluster:- 12 vCPU 96GB RAM CVM size: 12 vCPU 32GB RAM Test Result from MS SQL s

44603
ddubuque
5 years ago
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evanjuAdventurer
asked in AHV Virtualization
OSD via SCCM problem AOS 5.10

Keep getting an error while trying to deploy Server 2016 on AHV using SCCM. Has anything changed recently? I used VirtIO v.1.1.4. Do you have to have NGT in sccm also?

27596
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5 years ago
cmcgee
cmcgeeVoyager
asked in AHV Virtualization
AHV Deploying FortiAuthenticator

I'm trying to deploy FortiAuthenticator v5.5 VM but running into issues on AHV. I've tried creating the VM using the files from Fortinet but no instructions when using AHV per this guide: https://s3.amazonaws.com/fortinetweb/docs.fortinet.com/v2/attachments/5795878a-1f78-11e9-b6f6-f8bc1258b856/fac-vm-install-guide-43.pdf The files I've used are the following: KVM - fackvm.qcow2, datadrive.qcow2 Vmware - fac.vmdk, datadrive.vmdk screenshot attached of my options from Fortinet Created vm adding cloned disk using the files above Set vCPU, Mem, added NICs Fortinet suggested I use the vmdk files but still getting the error in the screenshot. I'm new to AHV so any help would be appreciated.

21534
S
5 years ago
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orangeTANGVoyager
asked in AHV Virtualization
Fortinet FortiSandbox on AHV?

Anyone successfully running Fortinet FortiSandbox VMs on AHV in their environment. The VM itself is able to deploy, but it fails to create its on VMs to test executables on.

11411
S
5 years ago
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PrasadPimpleExplorer
asked in AHV Virtualization
Flow

Can we Testing or Demo of Flow on Community Edition

15213
bbbburns
Nutanix Employee
5 years ago
bmeyer17
bmeyer17Voyager
asked in AHV Virtualization
VMware 6.7 Gotchas

Are there any VMware 6.7 "gotchas" that I need to worry about before upgrading? We're on 5.10.2 running on Dell XC series for a little context. Thanks!

11971
ddubuque
5 years ago
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NJVoyager
asked in AHV Virtualization
Is Hyper-V Generation 2 UEFI a showstopper for Production VMs?

I’m planning to move a Windows Server 2012 R2 Datacenter Edition VM from Hyper-V 2012 R2 to AHV on AOS 5.10.2 today. I have created a similar (but not cloned) test VM in the environment and migrated it yesterday with no issues. UEFI worked fine. Today in my final prep I’m seeing that in newer versions of the Nutanix documentation (AOS 5+) that this migration and VM type (AHV with UEFI) is listed as Limited Support and “Not recommended for Production”. Is this a showstopper? Are other customers moving important production Gen 2 UEFI Hyper-V VMs to AHV? Scenario Support Level Generation 2 VM (UEFI) migrated from Hyper-V to AHV Limited support. For information about configuring UEFI for VMs migrated from Hyper-V, see Post-Migration Tasks, Windows VMs. UEFI VM migrated from ESXi to AHV Not supported Note: The support levels in the second column are defined as follows: · Limited support. Nutanix recommends that you not use the configuration in product

14294
ddubuque
5 years ago
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AlPMVoyager
asked in AHV Virtualization
Disk layout for Vmware SQL 2016 Guest Cluster

Hello all I'm trying to establish the optimal disk layout for a VMware MS SQL 2016 2 node guest failover cluster that will have a single SQL instance hosting multiple small to medium sized databases. Unfortunately we don't really have the funds for licensing to do the recommended approach of creating lot of small VMs to host these databases, so we need to consolidate where possible. I've been reading though the Nutanix SQL 2016 best practice guide and it's raised a few questions. I've decided to allocate multiple vdisks specifically for database files, so I'd have a few database files to each vdisk instead of one vdisk with all the database files on it. I'm assuming this approach might be better due to each vdisk having a 6GB Oplog allocation and so more vdisks would prevent a single oplog from quickly over filling? Is there any there real a benefit here to having more vdisks to spread the databases across or does this only really come into play when you split indi

20954
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5 years ago
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Brado-MskiAdventurer
asked in AHV Virtualization
AHV Turbo for Windows

So over a year ago, there were reports of AHV turbo coming to us in 5.5. We are now at 5.10 and there have been no reports of VirtIO drivers for Windows supporting MultiQueuing. Any ideas as to why?

16784
ddubuque
5 years ago
C
Nutanix Employee
chhedaNutanix Employee
posted in AHV Virtualization
SQL Server 2008 / R2 End of Support -- Your plans?

Wanted ask the community for some feedback on the topic of SQL Server 2008/R2 End of Support. My fellow Nutanix Solutions team members @gregwhite @Chris Paap, myself and others were discussing about SQL Server 2008/R2 End of Support and how that would impact IT? Can you help us by sharing your thoughts, actions, tools around DB/app upgrades, migration etc related to SQL Server 2008/R2? You can take the survey here: https://www.surveymonkey.com/r/VJ2NWXS

10812
C
Nutanix Employee
5 years ago
UPX
UPXOutrider
asked in AHV Virtualization
KVM version compared to Acropolis

A customer asked.... Is there a sort of table to compare the Acropolis version with che KVM corresponding one? Thank you!

16332
UPX
5 years ago
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Ali AL-DubaisyWayfarer
asked in AHV Virtualization
RHEL on Nutanix AHV

Hi , Anyone would know if RHEL is supported to run on Nutanix Acropolis Hypervisor (AHV) ?

28254
ddubuque
5 years ago
joshodgers
Nutanix Employee
joshodgersNutanix Employee
posted in AHV Virtualization
VMware vNetworking NIC Teaming & Failover Recommendation

The following shows the available Load Balacing options currently available in vSphere 5.5 along with the recommended configuration for Nutanix environments for both Virtual Distributed Switches (VDS) and Virtual Standard Switches (VSS). NIC Teaming & Failover Recommendation

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5 years ago
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Dan NguyenVoyager
asked in AHV Virtualization
Where's our storage space?

Hi, I just added a new storage disk onto a VM and copied data onto it then realize we'd rather just expand the current one so I deleted the new disk and when I go to expand the current disk it is showing that I have no more space to use to expand. Where is the space going after I delete disks? Thanks,

28384
ddubuque
5 years ago
P
PradeepV
asked in AHV Virtualization
Live migrate from HyperV to AHV?

Hi Team, We use SCVMM to manage all our VM's and we are planning to move some machines to the AHV environment..Can you please confirm whether we will be able to do the live migration my VM's from HyperV to AHV?? Regards, V.Pradeep

12391
RichardsonPorto
Nutanix Employee
5 years ago
E
erobbbinsVoyager
asked in AHV Virtualization
VM Throttling

Is it possible to implement throttling at a per VM level? The thoughts/scenario behind the question: We have had on a couple occasions where we found a VM (different in each occasion) that was running away with storage controller IOPs. Of course the goal is to get the actual issue resolved for the offending VM, but we would like to be able to implement throttling to be able to assure other VMs in that cluster don't suffer when this does occur. Disk I/O has been the scenario so far, but could also see the need to throttle CPU, memory, and/or NIC throughput at some point.

15902
E
5 years ago

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