How It works

Have questions about how the Nutanix Platform works? Looking to get started - start here!

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Albert Mendoza
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Albert Mendoza
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New KB Articles Published on Week Ending June 18, 2022

Below are new knowledge base articles published on the week of June 12-18, 2022.KB 13252 - Acropolis service crashing across cluster after N...
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Albert Mendoza
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Albert Mendoza
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Top KB Articles for May 2022

Below are the top knowledge base articles for the month of May 2022.KB 7503 - NX Hardware [Memory] - DIMM Error handling and replacement pol...
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Alona
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Alona
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Help us help you! Assign Support Contact to your Nutanix assets.

We know you care about your infrastructure. Every time and auto support ticket is created for one of Nutanix clusters a Support Engineer con...
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1121 Topics

J
jitendraAdventurer
asked in How It works

intermixing 3 node All Flash NX-3360-G5 & 4 node Hybrid NX-1465-G5

Is it possible to mix, [h3] [/h3][h3][b]3 node [i][u]All Flash[/u][/i] NX-3360-G5[/b] &[/h3][h3][b]4 node [i][u]Hybrid[/u][/i] NX-1465-G5[/b][/h3]and form a AHV cluster ? NX-3360-G5 is 2*10 core CPU, 12*32GB Memory, 18*1.9TB SSD whereas NX-1465-G5 is 2*10 core CPU, 8*32GB Memory, 1*960GB SSD, 2*4TB HDD how storage tearing will work in this scenario ?

4
J
3 years ago
B
bohara
asked in How It works

controller vm's

I'm trying to get a better basic understanding with regards to controllers in a VM farm's data path. We are going to be in the process of migrating some of our farm resources to another data center which may include powering down controllers in a rolling fashion. What type of service interruptions would users expect to see?

1
RichardsonPorto
Nutanix Employee
3 years ago
X
xiaobaiWayfarer
asked in How It works

This cluster is not registered to any vCenter server. You must register a management server and enable DRS before you can create a VM.

I'm running nutanix 5.5.0.7 with esx ,when i create vmware machine，it's prompts “ This cluster is not registered to any vCenter server. You must register a management server and enable DRS before you can create a VM. ” Is vcenter installed directly on the node node ，then register this vCenter and enable DRS? Thanks in advance,

1
RichardsonPorto
Nutanix Employee
3 years ago
M
Maxim GrishinTrailblazer
asked in How It works

Nutanix Cluster API v2 reports normal status when a node is "down"

Yesterday our Nutanix CE cluster suffered a node loss (onboard NIC went offline somehow, investigating), HA failover performed correctly, but I had Zabbix monitoring cluster API 2.0 which did not state there is a problem. The only difference was that the host stopped being visible in the discovery by its proper name and remained only by IP, every other reading were "normal" and "not degraded" and even cluster state was reported "normal" during host effective downtime. WTF?! Also, WTF is with re-posting a question to another forums when asked to? Do you maybe have crosslinks allowed to ask the same question in a different subset of forums?

8
M
3 years ago
M
Michelp_bePathfinder
asked in How It works

Create Protection Domain Schedule via API/Python

Hi, I'm trying to create a schedule for an existing Protection Domain like this: [code]def createProtectionDomainSchedule(self,pdname): # Set the schedule for the protection domain try: policy = {"retention_policy": {"remote_retention_type": None, "remote_max_snapshots": {}, "local_retention_period": None, "local_max_snapshots": 1, "remote_retention_period": {}, "local_retention_type": None}, "start_times_in_usecs": [1549477620000000L], "rollup_schedule_uuid": None, "user_start_time_in_usecs": 1549477620000000L, "is_rollup_sched": None, "pd_name": pdname, "values": None, "suspended": False, "app_consistent": False, "end_time_in_usecs": None, "type": "DAILY", "id": "63c037e5-41e4-4630-8641-23509a5360a1gg", "every_nth": 1} protectionDomainURL = self.base_url + "/protection_domains/"+pdname+"/schedules" serverResponse = self.session.post(protectionDomainURL, policy ) print serverResponse.text return json.loads(serverResponse

1
C
Nutanix Employee
3 years ago
R
RevanSimbolonExplorer
asked in How It works

Migration VM From Old Nutanix Cluster To New Nutanix Cluster (AHV)

HI , I have Question, i want to build new cluster Nutanix using Nutniax NX3000 Series G6, Now I have existing Nutanix cluster running with server NX1000 Series G5. I want to Migrate All VM from the existing Nutanix cluster to the New Nutanix Cluster, Is it possible migrate between cluster nutanix? Can you please tell me step-step to migrate?

2
RichardsonPorto
Nutanix Employee
3 years ago
F
Funky
asked in How It works

VM operations using vmUUID instead of vmID?

I have a scenario where I only have the vmUUID available to me and the NGT tools aren't currently installed on a VM so it appears to be limiting what I'm able to do with the API. Is there a way to retrieve a VMs vmID using the vmUUID?

1
sandeepmp
Nutanix Employee
3 years ago
aluciani
alucianiChevalier
posted in How It works

Does Data Locality Really Matter?

GV Govindasamy (Nutanix Senior Solutions and Performance Engineer ) has written a series of three blog posts on data locality, I thought I would summarize and share them here. Be the first to reply with a question below. [url=http://bit.ly/2UzofWF]Does data locality really matter?[/url] Does data locality matter in HCI Architecture? Data locality is not just about storing new data in local node. It's also about keeping relevant useful data local when needed for low latency access. Read more. [url=http://bit.ly/2DJQyf9]Can data locality help scale throughput?[/url] X-Ray's throughput-scalability-random-reads and throughput-scalability-sequential-reads tests help answer the following: Can IOPS or throughput rate sustain over time? As number of nodes grow in cluster, can throughput or IOPS scale with it? Read more. [url=http://bit.ly/2DL05md]What if Data Locality was not a design choice in Nutanix AOS?[/url] What if data locality was not considered in Nutanix AOS architecture

1
ozzy01
3 years ago
J
Jegan SAdventurer
asked in How It works

Windows Virtual Disk locked

I have windows 2012 r2 VM but I forget the windows administrator password. When I'm trying to reset the password from recovery command line using below command. [list=1] [*]X:\sources [*]d: cd windows\system32\ren utilman.exe utilman.exe.old [*]copy windows\system32\cmd.exe utilman.exe. [/list] Usually above command will work for normal physical windows server , ESXi Guest vm's to reset the local administrator password. ** In nutanix recovery command line I am unable to view my actual OS disk. Is there any way, How can i view my guest VM os disk on recovery mode. ?

6
J
3 years ago
aluciani
alucianiChevalier
posted in How It works

Can Two Disks Fail in a Short Interval?

Yes. of course. The real answer lies on how these failures are handled in HCI architectures. What happens to the Data Availability during these failures? The questions arise: [list=1] [*]Does HCI architecture start protecting data as quickly as possible? [*]How smart the architecture is to rebuild the lost data and how long it's going to take? [/list][list] [*]If the rebuild takes longer, this time window is called risky period. Administrator must hope that there is no other failure occurs during this long rebuild window to ensure FTT and RF requirements. [*]Vendors may offer another brute force method of increasing RF / FTT which increases the cost (in the absense of smart architecture). [/list] In this video, I have two disk failures simulated with soft disk pulls on Nutanix AOS. This short video can articulate how fast the AOS gets into action to protect the data from subsequent failures and how fast it completes with its truly distributed architecture by employing all av

0
aluciani
3 years ago
P
Paul IlavarasuOutrider
asked in How It works

How Prism Leader election happen ?

Can you please help me with below questions 1.How prism master/Acropolis master will be elected ? is there any criteria to become a leader ?

1
N
3 years ago
M
Muhammad Usman Ayub
asked in How It works

Sizer Extent Store and Actual Container Size

Can anybody confirm if the Extent Store size shown in the Nutanix Sizer tool will be equal to the Container Maximum Capacity that can be used by the VMs for data storage? I am designing a 3-node cluster with following Disks 3 * 960 GB SSD 6 * 4 TB HDD Nutanix Sizer shows Extent Store (Assuming RF2) = 9.63 TiB for HDD and 0.64 TiB for SSD The total shown is 10.27. Will this value be the Maximum Capacity available for the Container to be made out of storage pool? As I have observed the Container Maximum Capacity is exactly half of what the Storage Pool Capacity is shown. What will be the Storage Pool Capacity shown for the above mentioned specs and is this value visible in Nutanix Sizer tool/Storage Capacity Calculator?

3
manfred
3 years ago
M
Muhammad Usman Ayub
asked in How It works

Network connectivity failure scenario

Hi folks, I want to ask about the details regarding the network connectvity failure and cluster behaviour in such cases. I am mentioning two such scenarios but other scenarios may also be possible. Scenario 1. If one host in the cluster gets completely disconnected from other nodes at network level but host is up and running what will be the cluster behavior and what will happen to the vms running on that particuar host Scenario 2. If all hosts in the cluster get disconnected from each other at network level but hosts and cvms are up and running, what will happen to the vms running on each host.

1
E
3 years ago
M
Manuel80Explorer
asked in How It works

Mixed Hypervisor in same cluster ?

Hello, with latest AOS (5.10 or newer) it's possible to run multiple hypervisor in same cluster ? For example one cluster with 5 nodes with esxi and 3 nodes with AHV ? Thanks Manuel

1
RichardsonPorto
Nutanix Employee
3 years ago
S
Stefano P.Pathfinder
asked in How It works

Space really available in a container with thick provisioned VM

Hi all, we are performing a POC and we have a cluster that originallly had about 30 Tib of available space made of SSD+ HDD. Then, to show the customer the performance improvement moving to All Flash we made an inline conversion addind SSD and removing all the HDD and now we have a total available space is about 11 TiB. The storage container has compression enable and the real used capacity is 4,5 Tib. The problem is that most of the VM are thick provisioned and the actual use space is reported at 12 Tib hence above the available capacity. This triggers RED alarms on the Prism console saying that he Data Resiliency is not available. So I have 2 questions: 1) since the actual used capacity is 4,5 Tib what happens in case of a disk failure? 2) how can we manage to eliminate these alarms? Question number 2) is particularly relevant since if we succeed in the POC and the customer could purchase Nutanix all flash systems , they will like to use th

2
manfred
3 years ago
H
hpExplorer
asked in How It works

Is there a network status for Nutanix?

URLs such as insights.nutanix.com *.compute-*.amazonaws.com release-api.nutanix.com ... According to our security team, those URLs are white listed, so they must be down. e.g. "release-api.nutanix.com could not be reached. Please check Name Server and Proxy settings" Thx

1
J
3 years ago
G
GavinS1991Voyager
asked in How It works

Files Layout

Hi All, Does anyone know how to get this View on files? Regards Gavin [img]https://d1qy7qyune0vt1.cloudfront.net/nutanix-us/attachment/8042916d-dcb4-4489-9cee-3c2c3ea507aa.png[/img]

2
mmcghee
Nutanix Employee
3 years ago
P
Pawan_sahuVoyager
asked in How It works

DELETE cluster/nfs_whitelist/{name:.+}

I have been trying to remove an existing nfs whitelisted machine through Rest API explorer. API: cluster/nfs_whitelist/{name:.+} I have tried giving the path parameter with different combination of IP/sunbnet mask but all were failed with error message: Specified NFS Whitelist does not exist. Here, machine IP is whitelisted as I can see it in Filesystem whitelists but I am not able to figure out the exact representation of path parameter. If anyone knows, then please tell me. Thanks in advance.

2
P
3 years ago
V
VAJeffVoyager
asked in How It works

AHV Replication Options

We are designing a Nutainx cluster utilizing a NX-1065-G5 four host block licensed with Prism Pro and Acropolis Ultimate. This will be the production site managing approximately 12 workloads. For the recover site we are looking at building a 3 host Dell cluster. The hypervisor throughout the environment will be AHV. There will be a Cisco metro network solution between these two sites. My question is, what are our options for replication between the two sites? The KB lists solutions for ESXi and Hyper-V, but does not mention AHV configurations. Is this because this is a native solution built into the Prism solution? Thank you for any enlightenment.

2
V
3 years ago
darshan.patel
darshan.patelTrailblazer
asked in How It works

Creating an Image (from URL) using Powershell

Hi Everyone, I am migrating VMs to AHV from XenServer. The process involves [list] [*]Copy XenServer VM Disks to Nutanix Datashare on XenServer [*]Create DISK_IMAGE from the disks copied on Nutanix DataShare [/list] The manual process is to create an image in Nutanix using URL nfs://Nutanix Host IP/SR Name/SR UUID/DISK UUID.vhd I am looking to automate this step using Powershell and Nutanix Cmdlets 'New-NTNXImage' Please help me on how can I create a image (source: URL) using powershell So far I have this, [code]$URL = "nfs://172.21.92.26/Xen_to_AHV_Migration/f63571ed-3fbf-80ba-f851-31767ad753fc/357527a6-e441-46e9-a680-f05f1af831aa.vhd" New-NTNXImage -Name "xenahvwintst - disk 1" -Annotation "Copied VM xenahvwintst - disk 1" -ImageType DISK_IMAGE -ImageImportSpec $URL [/code] I am not sure on how to include the URL into the command to create NTNXImage

1
darshan.patel
3 years ago
S
sdebrisAdventurer
asked in How It works

Is AF node also using cluster cold pool & clarifications on ILM thresold

Hello, I have questions on SSD pool and ILM mechanism I still did not found answers for after cross reading dozens of web sites and forums. Probably the response is obvious but I feel like I am missing something here and would like to have certainties on these points. So, let's suppose I have a 4 hybrid (1065) node cluster and I am running out of SSD. Q1) Can I technically add an All Flash node in the same cluster container ? Q2) Will the VMs hosted on this specific AF node automatically be all flash VMs (with no ILM and cold tier drain mechanism) ... or will they use the cluster cold storage pool (from other hybrid nodes) ? ===== Regarding the ILM mechanism and different SSD thresold, I (think I) understood that: - data will preferentially be stored on local SSD of each node until it reaches 75% usage - If one node reaches 75% of SSD usage, then ILM will send "less hotest" local SSD data over the network to other remote SSD nodes - If all nodes fi

1
S
3 years ago

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