VMware HotAdd/HotPlug is an advanced feature that helps VMware users add vCPU/vRAM on a working VM. Useful as it is, it's still disabled by default due to some possible inconvenience it may cause on the guest OS's computing performance, so careful considerations need to be taken before you decide whether to enable the feature. HotAdd can ...

The Virtual appliance mode is recommended if the role of a backup proxy is assigned to a VM. In the Virtual appliance mode, Veeam Backup & Replication uses the VMware SCSI HotAdd capability that allows attaching devices to a VM while the VM is running. During backup, replication or restore disks of the processed VM are attached to the backup proxy.

Reason #1: vNUMA is disabled on the VM. Once the Hot-Add feature is enabled on a VM, vNUMA is automatically disabled. vNUMA is enabled by default on all virtual machines that have 8 or more vCPUs configured because it will improve performance on the larger VMs. Now, not all of your VMs will have large numbers of CPUs but you will still need to ...

VMware vSphere Resources: HotAdd/HotPlug Explained. In a VMware vSphere environment, provisioned resources may not be enough for the required performance level when you have a powerful application running on a VM. In this case, the optimal solution is to add more processor and memory resources to the virtual machine. When critical applications ...

HotAdd cannot be used if the VMFS block size of the datastore containing the virtual machine folder for the target virtual machine does not match the VMFS block size of the datastore containing the VMware Backup Host virtual machine. For example, if you back up virtual disk on a datastore with 1MB blocks, the VMware Backup Host must also be on ...

HotAdd restores for Amazon provide faster performance than traditional restores. By using an access node that is running on an Amazon instance, the restore operation can write directly to Elastic Block Storage (EBS) and inject Amazon drivers that are required for destination instances. HotAdd restores are used for the following operations ...

Because, you see, however much one likes to dress it up, at the end of the day, the "HotAdd CPU" feature in modern computing is mainly for Administrative convenience. The ability to plug in (or logically add on) additional Processors to a Computer while the Computer is up and running, and for the Operating System to instantly recognize the ...

Click [ Ok ] to release the disk (s) from the Proxy. Steps 1b and 1c: Identify the hotadd test disk (s) and remove from Proxy. Step 1d: Double-check which disks are being removed, and click OK. Remove the snapshot created on the production server during testing. Step 2: Remove the snapshot from the VM that was being tested.

Hotadd may fail if any disk was created with a newer hardware version than the VM being backed up. For example, if a disk was moved from a hardware version 8 VM to a hardware version 7 VM. To resolve, upgrade the hardware version of the VM. A single SCSI controller can have a maximum of 15 disks attached. To run multiple concurrent jobs with ...

A VMware Backup Host can access Virtual Machine data from datastores using four different methods - SAN, LAN (NBD), HotAdd, NBDSSL. These methods are referred to as VMware Transport modes. This article talks about these transport modes, the best practices around them and troubleshooting tips for some commonly seen errors related to transport ...

• HotAdd mode doesn't work for independent disks as they cannot be backed up since the snapshot cannot be created on these volumes. This is a known limitation of indipendent disks, design your infrastructure accordingly. • With HotAdd transport, full backup of a virtual machine fails when multiple disks have the same name, as they could ...

HotAdd is a VMware feature where devices can be added "hot" while a virtual machine is running. Besides SCSI disk, virtual machines can add additional CPUs and memory capacity. HotAdd is a good way to get virtual disk data from a virtual machine to a backup appliance (or backup proxy) for sending to the media server. The attached HotAdd ...

While looking for something in the vSphere 8.0 API Reference, I stumbled onto a new VM configuration setting in vSphere 8 called exposeVnumaOnCpuHotadd which looks quite interesting and has the following description:. Capability to expose virtual NUMA when CPU hotadd is enabled. If set to true, ESXi will consider exposing virtual NUMA to the VM when CPU hotadd is enabled.

HotAdd restores for Amazon provide faster performance than traditional restores. By using an access node that is running on an Amazon instance, the restore operation can write directly to Elastic Block Storage (EBS) and inject Amazon drivers that are required for destination instances. HotAdd restores are used for the following operations: Restores

HotAdd may fail if any disk was created with a newer hardware version than the VM being backed up. For example, if a disk was moved from a hardware version 8 VM to a hardware version 7 VM. To resolve, upgrade the hardware version of the VM.

2016-02-29 18:02:17 avvcbimage Info <12006>: hotadd transport is recommended for faster backups and restores and less exposure to network routing, firewall and SSL certificate issues. proxycp --hotadd shows all requirements passed for hotadd:

Rubrik HotAdd Proxy IPs or subnet. Diagnostics. 12800-12801 TCP. Compute gateway. Rubrik cluster IPs or subnet. Workload virtual machines. Support for RBS (optional) 58000 TCP. Compute gateway.

Stale HotAdd disks remained, and were not recognized the next time backup software ran. This caused failure of snapshot delete, resulting in a buildup of redo logs. The solution is to wait longer for vpxa to report, and apply heuristics to clean up stale HotAdd disks if they appear. The VDDK 5.0 U1 fix also works with earlier ESX/ESXi versions ...

V11 Slower backups using hotadd with 10Gb network. Here is what we have. 4 Esxi hosts- 10Gb links to Nexus 3k. Pure flash SAN- 10Gb links to Nexus 3k. Buffalo TS6400RN #1- 10Gb link to Nexus with media converter. Buffalo #2- 1Gb link to 1Gb switch>10Gb uplink to Nexus 3k. Veeam BR server- 4 cores, 24 GB ram- 2 concurrent tasks but just changed ...

HotAdd transport mode, virtual disks will be accessed as local disks for efficient data transfer to Vembu BDR Server. Backup proxy will then read the disks

Re: HotAdd fails after 24-72 hours of B&R server uptime. by jorgedlcruz » Thu May 05, 2022 8:10 am. Hello, Thanks for the support case. I would triple check the DNS configuration across the whole platform, meaning the Veeam Components, sounds like you have all in one with VBR/Proxy, make sure that can resolve all ESXi FQDNs, plus vCenter FQDN.

"In the other situations, however, Hotadd/Virtual Appliance mode is not applicable or possible given the current VMWare architecture." If that is the case, I would still like to know what is the cause that prevents usage of hotadd conectivity.

This article was written by Tom Schauer, Technical Specialist. Several issues occur when installing Microsoft Office Web Apps or Office Online Server on a nonsystem Drive by using VMware. The problem lies in setting the Microsoft Office Web Apps CacheLocation or RenderingCacheLocation to a nonsystem drive location with the HotAdd/HotPlug ...

PowerCLI - Enable CPU and Memory HotAdd. I had a need to enable CPU and Memory hotadd to many virtual machines prior to a template being updated, doing some research there is no easy way, however there are some functions out there to do it. You can copy and paste each function into a powershell window and then run the associated command.

Workstation 17 Run VMs alongside Hyper-V, WSL2, Device Guard and Credential Guard features of Windows. 7. 10. r/vmware. Join.

As per VMWare documentation says on VMWare 7.0u2 each PVSCSI card on the proxy VSA should be able to mount 64 vmdks of the Backed-up VMs. The issueis that we are monitoring during the backup and each proxy is just able to mount 15 disks via hotadd (stucked on the previous limitation of VSphere 6.5)

"HotAdd restore by Windows 2008 proxy when opening multiple disks. When a Windows Server 2008 virtual machine is deployed as a proxy, HotAdd failures can occur when writing to the second and subsequent disks of a virtual machine that is being restored. Due to SAN Policy changes, W2k8 R2 and W2k8 R2 SP1 are more prone to this than earlier editions.

My Hotadd setup looks like this in the BKEXEC 12.5 console The VCB proxy server (tkvcbproxy) is a Windows 2008 64bit server with VCB 1.5 installed. Further more I have created the needed simple "helper server" and named it: tkvcbproxy(VCB-HELPER) It is very important to use the same name as the vcb-proxy followed by (VCB-HELPER).

HotAdd backup performance tuning. We have setup a Commvault Media Agent to backup VMs using HotAdd transport mode. The setup works but its average throughput is less than ideal. Directly FC connected to a LTO-8 tape library with 4 FC drives. With the same above SPEC in our Netbackup environment, it can achieve an average throughput of 300MB/Sec ...