difference between virtual appliance and network in my lab

[baber]

Now I want test virtual appliance in my lab
I have a dl380p G8 server and use local disk not have shared storage I have create 3 vm on that
Veeam server = 10.10.50.54 on vss vmnic0
Backup proxy server = 10.10.51.53 on VDS vmnic1
Dns = 10.10.50.50 on vss vmnic0

Now I want get backup from dns machine whenbackup starts dns disks attached to backup proxy server but here all of traffic backup have to acrossing through vmnic1 ???

now in my lab what is difference between virtual appliance and network for backup proxy transport modes ??
BR

[Vitaliy S.]

Hi Babak,

Since backup proxy does all the heavy lifting when processing data, then traffic is expected to go through vmnic1. If you want to route traffic through a specific network, then please use this option > Specifying Preferred Networks for Data Transfer

Here is a link for more info on transport modes > VMware : [FAQ] FREQUENTLY ASKED QUESTIONS

Thanks!

[baber]

1- i read veeam user guide document but problem is i could not understand when use virtual appliance it had to by pass LAN ????
2- now in my lab not send any traffic from physical adapter ???
3- i want to know free lan is that by pass lan ?
4 - can by pass lan with use virtual appliance mode??

BR
Babak

[Vitaliy S.]

1. Virtual Appliance proxy gets data directly from the storage stack and then sends it to the repository via network (unless you combine proxy and repository on the same server).

2.Unfortunately, I do not understand the question. Data traffic flows according to the configured network rules or via preferred networks option. Keep in mind that all components involved in a later option should have access to these networks.

3.In this case you need to use either SAN mode/Virtual appliance and then use the same windows box as a repository (for example with a mounted iSCSI volume or FC). There are some existing topics describing it in a bit more details (depending on the backup repository type).

4. Yes, absolutely, however depending on where your target repository is, you might still use the LAN to transfer data.

P.S. this diagram might clear up some points as well > Backup Architecture

[baber]

Dear friend
1- excuseme i read veeam documents but now want to know in this mode that my veeam backup and replication is a vm and have a virtual appliance on a seprate network can bypass LAN ???

2- is that necessary install veeam backup and replication on physical server for bypass LAN or use free LAN?

3- do i have to use physical server as veeam backup server and use virtual appliance as a vm and put backup repository and backup proxy on one VM in this mode will be bypass LAN and traffic will not send from LAN ???

BR

[Vitaliy S.]

1. It does bypass LAN, since protected data goes from storage to the proxy directly. Veeam backup server is not transferring VM any data.

2. No, but what's your repository? Destination target?

3. No, the main point here is it doesn't matter where your Veeam backup server is installed (it is just managing all the jobs). You need to use either HotAdd (Virtual Appliance mode)/Direct SAN access for the proxy and then connect proxy server to the repository. If both proxy and repository are the same servers, then you will retrieve data via LAN free and then write to the repository.

[baber]

Dear friend
my imagine from free LAN or bypass lan is don't send any backup traffic from physical network adapters.

for example in previous post is said i have a lab my server is DL380-HP-G8

my veeam server has been installed on VM with ip = 10.10.50.54 on VMNIC0
my backup proxy server is a VM with ip = 10.10.51.53 on VMNIC1
my backup repository is a VM with ip 10.10.51.53 on VMNIC1

now here my means from bypass LAN is do't send backup traffic from VMNIC1 but all of backup traffic will be send from VMNIC1 is that correct ???

is my imagine from bypass LAN or freeLAN correct ????
i think when say speak about freeLAN not send any traffic from LAN

BR

[baber]

please help me

[DGrinev]

Babak are you sure Virtual Appliance mode was used for the processing?
You can check it in the backup job stats window, by selecting the VM and look for the tag next to the proxy server name selected for processing. It looks like this: [nbd] or [Hotadd].
Another way, you can uncheck Failover to network mode in the backup proxy transport mode settings and execute the job again. Thanks!

[baber]

so thanks
1- now is my imagine from FREE-LAN correct ??
i think when say speak about freeLAN means not send any traffic from LAN

2- in previous i explain my LAB and senario i don't have san or shared storage all of my disks are local on hp server in this mode (my veeam and backup proxy and backup repository are VM) can use FREE_LAN ?

BR

[DGrinev]

1. There will be no LAN traffic if the backup proxy and repository reside in the same VM.
2. Yes, you can utilize Hotadd mode with the infrastructure you have. Thanks!

[baber]

Dear friend you said if backup proxy and backup repository reside on same vm in this mode not send any traffic from LAN
but in this mode my backup proxy VM is on a switch that assign a VMNIC to that now all of trafffic will be across from this VMNIC and this is not FREE-LAN
is that correct ??

BR

[DGrinev]

In the discussed scenario no backup traffic expected, but do not forget about management traffic between backup infrastructure components, e.g. backup server sends a task to the backup proxy with the instructions to start processing. Thanks!

[baber]

so thanks
but really could not get my answer untill now :

My senario is :

i have 3 VMs in my environment :

1 - veeam backup&replication server is VM on VMNIC0
2 - backup proxy is vm on VMNIC2
3 - backup repository is vm on VMNIC2

1- now i want to know if start a new backup job and select backup proxy and backup repository also uncheck failover to network mode if primary mode fails will cross all of backup traffic through VMNIC2 or no ???? if not how backup traffic cross ?

BR

[DGrinev]

You said there are 3 VMs, so backup traffic route will be: ESXi Host (local storage contains all VMs disks) -> Backup Proxy (mapping disk, reading data) -> network (transferring data) -> Backup Repository (writing data).
So, as you can see there will be a backup traffic through the network. Thanks!

[baber]

dear friend
Hi

1 question:

- veeam backup and replication server is on VMNIC0
- backup repository and backup proxy are on same vm on VMNIC2
1-in this mode monitor vmnic2 and not go through any traffic from that ok is this mode free-LAN ??
if above mode is free-LAN backup traffic did not go through from vmnic2. now where from backup traffic go through ? because i don't have any shared storage

[baber]

Please help me

[DGrinev]

Dear Babak,

During the backup process in Hotadd mode, the disks of the source VM are attached to the Backup Proxy, so the VM data retrieved and written from\to local datastorage without using network connection.
Simply to say the VM data blocks are copied from the attached virtual disk to the repository that resides on the same VM in your case. Thanks!

[baber]

1-if assign the backup proxy and backup repository role to veeam backup & replication will it use free-LAN?

2 - what is Disadvantages assign backup proxy and backup repository to veeam server ?

BR

[DGrinev]

1. Yes, it will be LAN-free.
2. In the scenario with dedicated components between the servers you should get better performance.
However, in a small environments the workload isn't high enough to see the difference. Thanks!

[baber]

is this correct ?

we can use LAN-FREE just when all of our vms that we want get backups put on a shared storage that other hosts can see that shared storage is that correct ??

for example i don't have shared storage veeam and backup proxy and backup repository are one vm now want get backup from other vms that are put on the other esxi host with different disk now can i use LAN-FREE here?

BR

[DGrinev]

You can use LAN-free even if all hosts have local storage, but it requires you to deploy a backup proxy with the repository on each of them.
However, that's not recommended approach to store the backups on the production datastorage. Thanks!

[baber]

thanks but if we want had backup proxy and backup repository for each host in this mode we don't have Centralized backup repository and backups are distribute
is that correct ?

BR

[DGrinev]

That's correct.
You can deploy a backup proxy on each host, so only the data retrieval process will be in Hotadd mode (LAN-free), but data transferring will be through the network, since the repository will be on the other local storage. Thanks!