5 Essential Tips for Maximizing Your Experience at Nutanix .NEXT for Bloggers
One click upgrades require DRS so that machines can vmotion from host to host and isolate the host receiving the upgrade. If you do not have DRS capabilities, you can use VUM to upgrade a host, or upgrade it manually, you will not be able to use one-click upgrades. Keeping in mind, that you will need to vacate the host of vms, and shut down the CVM on that host and then place the host in maintenance mode. I would always recommend filing a feature request with Nutanix Support for the ability to leverage one-click upgrades with your license type. We have done the same for our 36 ROBO clusters that have licenses that do not include DRS. We have to upgrade 100+ nodes manually and we spend a week plus doing upgrades for hypervisor, firmware, etc... because of this limitation. If you can sustain the outage, you can shutdown your vms and place all nodes into maintenance mode and kick off the upgrade from VUM of your vcenter is on a different cluster and can still reach the hosts. Th
Thats pretty much it. You'll want to read through VUM upgrade proceedures and get it configured properly, but at a high level that's the steps. Support will likely be more than happy to assist with the upgrade.
I've seen this on server 2016, where the image I downloaded was incorrect. You'll need to make sure you're downloading just the Server 2016 standard ISO or the datacenter ISO. If you're using an old OS, or have verified that your ISO's are correct, you may want to try the following: The link below will get you an ISO. When your building your first image, have two CD Drives, one for the OS image, another for the storage drivers. Where you see no disks displayed, load the second CD-ROM and inject the storage drivers. You should see your disks. http://download.nutanix.com/mobility/1.1.4/Nutanix-VirtIO-1.1.4.iso
Glad you found a solution! Which one worked for you if you don't mind sharing?
Excellent. Thanks for sharing the video, hopefully this helps others with the situation you were in. Don't forget to mark your solution, so the post is marked as resolved.
Great write up!
Technically you can defrag, and do so at the VM level. https://www.vmware.com/support/ws55/doc/ws_disk_defrag.html You really shouldn't defragment your virtual disks on Nutanix. It's bad for the SSD drives and the way storage extents work on Nutanix, it's unnecessary since it is already indexing and organizing data for you in 64k chunks. Your vdisk already has extents across multiple drives, so this will generate unnecessary IO. Of course I always recommend reaching out to support. They can provide you best practices.
Unfortunately the unmap and trim commands that esx issues doesn’t work on NFS based storage. you have to run a tool like sdelete or fill the drive and purge it to reclaim the space.
@arjun_sen this is most welcome news! Appreciate the article shared and very happy to see failover clustering supported!
We've had to do this a couple of times. Great info. You can also achieve this through the Rest API. https://portal.nutanix.com/#/page/docs/details?targetId=API-Ref-AOS-v510:pro-api-abortReplication-auto-r.html
We have for several hundred machines, what would you like to know? Installed on 2012 R2, 2016 and 2019 servers.
@mikkisse is correct.Going to the VM and looking at the I/O metrics will give you a lot of information pertaining to Read/Write distribution on disk, as well as the type of writes. If doesn’t give long term I/O metrics, but if you’re seeing alerts, you can watch this and get an idea of what’s going on. Few recommendations as we run numerous MS-SQL servers on AHV and ESX clusters on hybrid clusters.Take advantage of AHV Turbo. This helps greatly when you’re on a hybrid cluster especially. When you have busy databases that require high I/O, make sure they exist on separate virtual disks. Doing so on AHV will allow for better CPU consumption and more efficient storage operations. The Wait is Over: AHV Turbo is Here! | Nutanix Community Make sure you have good indexing jobs. Not having proper indexes can hurt application performance.SQL Server Index Architecture and Design Guide - SQL Server | Microsoft Docs Make sure that your disks have the correct Allocations. Most SQL servers
Already have an account? Login
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes.
Sorry, our virus scanner detected that this file isn't safe to download.