It doesn't wait for 20 minutes for the I/Os to be redirected. I think there is only one oplog per CVM/host whether the host is aving all flash drive or 2 SSD and remaining HDD. Will those new IOs served from local copy via another CVM or IOs will be served from the replica copy. Enter your username or e-mail address. Ques 2 - When new Write IO request comes, first it will write the data on Oplog then synchronously send to other CVM’s Oplog. Each vdisk is having an oplog space which has a limit of 6 GB. #4 Snapshots at Storage or VM level If you shut down all 3 CVM's, there will be no more Nutanix software to communicate with, so you would not be able to manage anything. Could you please answers with the below ones as well ? Sorry, we're still checking this file's contents to make sure it's safe to download. Thanks again for answering the requested questions. The Nutanix CVM is responsible for the core Nutanix platform logic and handles services like: To shutdown Nutanix CVM and Nutanix AHV hypervisor in the Nutanix cluster it is vital to use the right procedure to shutdown properly without any harmful impact of the running services and software in the Nutanix AHV Hypervisor as well as Nutanix CVM. Will cluster starts to build a new replica to accommodate the missing copy or RF3, When new Write IO request comes, first it will write the data on Oplog then synchronously send to other CVM's Oplog. Apparently, for reimaging a cluster from scratch, you need to get in touch with Nutanix support, because the necessary installation files can only be provided from their side, unless of course you are listed in the portal as a partner. All the new I/Os will be redirected to another CVM when the local CVM is down. There is only one oplog store for each CVM which holds the oplog data of the vdisks. This would be like shutting down vCenter, and trying to connect to vCenter while it was shut down. I'll reply to the other thread in a little bit, it's a long thread. All host in clusters having 2 SSD and 6 HDDs. vDisks are logically composed of vBlocks which make up the 'block map.'. A : Will those new IOs served from local copy via another CVM or IOs will be served from the replica copy, B: Will cluster starts to build a new replica to accommodate the missing copy or RF3. Please try again in a few minutes. foundation install hypervisor, then install CVM, then CVM utilize NDFS to manage whole disks, untill while reading how to replace I found a Caution: Xiaowei | Nutanix-NPP | NetApp-NCDA NCIE |@jolinvsshane. If you have a Nutanix cluster on VMware vSphere which has been through some hypervisor upgrades, your CVM’s virtual hardware version may be a bit out of date. Thanks a lot for answering the above questions. Sorry, our virus scanner detected that this file isn't safe to download. First – Yes – CVM and hypervisor maintenance mode are two different things. Note: way back in the early days of Nutanix, the CVM was called the "SVM", hence this name as stuck around internally on a few items, such as svmboot.iso But I am not sure about this statement, Please clarify.. Best answer by Neel Kotak 12 June 2020, 06:47. We'll send you an e-mail with instructions to reset your password. what is the vDisk, VM configuration and snapshot file’s extension of a Virtual Machine running on AHV cluster ? In the case of Hyper-V the storage devices are passed through to the CVM. Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes. For the Nutanix units running VMware vSphere, the SCSI controller, which manages the SSD and HDD devices, is directly passed to the CVM leveraging VM-Direct Path . All host in clusters having 2 SSD and 6 HDDs. Reason being i have been asked about this a few times recently. what would be CVM oplog size if we have 2 SSD(each 1 TB) per node ? Each vdisk is having an oplog space which has a limit of 6 GB. I Agreed with the above statement but I am willing to know the files extension of a VM runs on AHV hypervisor, I heard the the below terms please correct me if I am wrong, VM vDisk extention format in AHV is Qqow2, VM vDisk extention format in AHV is Qqow2. Enter your username or e-mail address. In ESXi, the configuration file is called a VMX, and it defines how the CVM is configured for resources, as well as calling out the svmboot.ISO as a device that the CVM always boots off of.