Download Veeam Backup Agent

Veeam Agents provide the ability to back up and restore workloads which prohibit the use of a virtual machine backup (e.g. physical computers, public cloud vms, vms which snapshots cannot be created for). Veeam Backup & Replication lets you centrally deploy and manage Veeam Agent for Microsoft Windows and Veeam Agent for Linux on computers in your infrastructure from within the Veeam Backup & Replication console.

Best practice: review and uncheck these checkboxes in environments with strict software deployment/maintenance rules and processes. Veeam agents can also be pre-installed by 3rd party software. It might even be preferred to disable scheduled rescan of Protection Groups as described here.

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Successfully setup a backup repository, attempting to add the first computer. My understanding is that the server will access the desktop and install a small program to allow for the backups. However, I'm not able to get this to work - I continually get an error stating "Unable to install backup agent; cannot connect to [Desktop] Error: Failed to resolve host name [Desktop] from [Server] "

Can anyone help me in understanding the difference between Agent based and Agentless backup ?? I have been through the several articles online, which says agent based is always preferred over Agentless backups. If that is the case, how come Veeam is doing so well in the market which has only agentless backup offerings

I use Arcserve udp and my physical boxes are agented my virtuals are agent-less. Both back up as reliably as each other so to me the argument between agented and agentless is dependent on the backup product not which is better as in my experience there is no difference

Agentless just means no software gets installed on the computer that is being backed up. Veeam works at the hypervisor level (VMWare, Hyper-V, etc) and, therefore, operates outside the VM's OS and, thus, doesn't use an agent.

Comparing Veeam to traditional Windows-based backup solutions is not an apples-to-apples comparison. In the traditional scenario, agent-based backup is generally considered superior but in a VM environment, the agent is not necessary since software running under the host OS is able to access VM disk files directly. If you look at it a certain way, Veeam is actually just a different kind of agent.

So whether you use an agent or go agent-less is really up to what you are backing up and ultimately what type of restores you will need to perform. An agent back installs an actual software agent on your server at the OS level. While an agent-less backup will backup a snapshot of the VM server from the hyper-visor. When thinking about if you need to use an agent, you must figure out if you are planning on backing up any databases (SQL, Oracle, Exchange, etc) In order to have granular restores of the DB itself you would need to use an agent. Same though process goes into if you have a huge data store that you are backing up, it is generally a better idea to do agent backups of the server so you are able to split your backup if needed and also have a more granular restore option of your files. You can do a mix of these as well (IE if you have a couple simple applications servers or smaller file servers, you could use the agent-less backup and then use the agent backup for your Exchange server, and DB servers). When using an agent backup you'll want to also ensure you are doing bare-metal backups as part of the backup so you still have the option to restore an VMs back onto a host as a complete restore rather then needing to reinstall and restore data only.

Last item would be restore times, generally speaking agent based backups will be able to restore files much faster then an agent-less backup as the agent-less backup will need to mount the snapshot in order to restore the files which could take some time depending on how large that data set is.

Agentless backup means less administration and less overhead as it does not require you to install agents on every server/machine. It is also more secure as you are not required to open up multiple ports for the agents. For upgrades and new releases of the software there is less administration as you do not need to be updating multiple agents.

Asigra Partners and customers enjoy the multiple benefits of agentless backup as it is less resource intensive. Asigra Cloud Backup is a comprehensive agentless data protection software solution that is hardware agnostic and protects data on physical and virtual servers, enterprise databases and applications, workstations, laptops, smartphones, tablets, Docker containers, Office 365, Google Apps, Salesforce, AWS and Azure.

Veeam Backup & Replication does not deploy persistent agents inside VMs. Instead, it uses a runtime coordination process on every VM that is started once the backup operation is launched, and removed as soon as it is finished. This helps avoid agent-related drawbacks such as pre-installing, troubleshooting and updating.

You can consider that agents perform almost the same functions as Veeam runtime coordination process. However, the actual piece of software is real, persistent software agent (not a run-time process), which results in issue known as "agent management hell". You need to license, deploy, manage, update and monitor those agents to make sure they behave. Because they are present on VM all the time (and not just when backup runs), you need to make sure they don't affect other applications (with Veeam, VM stays "clean" 99.9% of time). And imagine customers with hundreds or thousands of VMs... that is why people don't like dealing with agents, and prefer Veeam's approach so much.

Agent based - Endpoint require a piece of software or service to initiate the backup in it. You may deploy the software or inject the service from a centralised server. But there is a communication happens between endpoint and backup server in some way. Backup schedule initiation happens at endpoint / client side.

Agentless based - Purely control on server side, using API or any other source, all details pulled directly from the backup server. Some backup product uses with the help of Windows native service, will get the information. Backup schedule initiation happens at server side.

I can't really think of reasons why Agents are superior. Agents can be an added security vulnerability, consume RAM, CPU and disk, need to be updated (which can consume even more RAM/CPU/disk and introduce change into the environment). Sometimes a reboot is required. Agentless avoids all of those issues. As an MSP who doesn't want to do any of the above to our customer networks it's an even bigger reason to avoid agents, which is why we use Agentless backup solutions from Asigra, VEEAM and Zerto.