[ovirt-users]Re: Need advice with 3 servers and 1 SAN

2025-12-10 Thread erik
Just have each host have access to the LUNs from the array. Do you have 
redundant Ethernet switches? From a performance aspect, usually iSCSI will 
outperform NFS. Also, make more than one iSCSI LUN, That way you can distribute 
virtual disks across multiple storage domains. Just have all iSCSI LUNs 
mountable on all servers.

Also, make sure you have multipathing setup on the hosts.

If you need more help, let me know and I’ll BLOG how the config works.

Erik
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[ovirt-users]Re: Need advice with 3 servers and 1 SAN

2025-11-18 Thread Jiří Sléžka via Users

Hi Ethan,

On 11/17/25 14:48, Ethan Provensen via Users wrote:

Again, I am new with all of this. I have been trying to figure out the most 
efficient setup, and learning oVirt at the same time. I do not have any 
experience with oVirt at all. I have 3 Dell PowerEdge servers which will be the 
3 hosts, and I have an IBM SAN. I have a LAN connection and a separate iSCSI 
connection (to the IBM SAN) for each host.
Looking over the setups, I feel the Self-Hosted Engine Architecture will work 
best. I have several questions about this setup:
1- I understand the Manager is a VM on 1 of the hosts, but what about the oVirt 
Engine?


Manager = oVirt engine. It can be hosted as VM on one of hosts (it is 
called Selfhosted Engine (SE)) or can be run on separate server 
(Standalone Engine)



2- Can the oVirt Engine be a VM also on 1 of the hosts? Or should the oVirt 
Engine be a separate VM not hosted on 1 of the 3 hosts?
3- What is the difference between the Manager and Engine?
4- Can the oVirt Engine also be the Manager as 1 VM?
5- Does the oVirt Engine have to be on the same VLAN as the 3 hosts?


it depends on your topology. In standalone deployment it can be on 
different vlan for sure, for SE I am not sure at the moment (I am 
running SE on the same vlan as hosts in my topology but I am not sure if 
it is condition or not).


Cheers, Jiri


Any assistance would be greatly appreciated. Please respond.

Thank you,
Ethan
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[ovirt-users]Re: Need advice with 3 servers and 1 SAN

2025-11-17 Thread Ethan Provensen via Users
Again, I am new with all of this. I have been trying to figure out the most 
efficient setup, and learning oVirt at the same time. I do not have any 
experience with oVirt at all. I have 3 Dell PowerEdge servers which will be the 
3 hosts, and I have an IBM SAN. I have a LAN connection and a separate iSCSI 
connection (to the IBM SAN) for each host. 
Looking over the setups, I feel the Self-Hosted Engine Architecture will work 
best. I have several questions about this setup:
1- I understand the Manager is a VM on 1 of the hosts, but what about the oVirt 
Engine? 
2- Can the oVirt Engine be a VM also on 1 of the hosts? Or should the oVirt 
Engine be a separate VM not hosted on 1 of the 3 hosts?
3- What is the difference between the Manager and Engine?
4- Can the oVirt Engine also be the Manager as 1 VM?
5- Does the oVirt Engine have to be on the same VLAN as the 3 hosts?
Any assistance would be greatly appreciated. Please respond. 

Thank you,
Ethan
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[ovirt-users]Re: Need advice with 3 servers and 1 SAN

2025-10-31 Thread Derek Atkins
HI,

Each host should have its own iSCSI connection to the SAN.  That, most
likely, implies an iSCSI connection between each host and the SAN.  I
suppose you could use NFS instead of iSCSI, but I suspect iSCSI would be
better.

You do NOT want to have host1 have a connection to the SAN and then hosts
2 and 3 access the SAN via host1, because if host1 goes down, then hosts 2
and 3 lose access to storage.

Note that you still have a single point of failure:  the SAN itself.

-derek

On Fri, October 31, 2025 9:44 am, provensen--- via Users wrote:
> I am new to oVirt, and I am trying to find the right solution for my LAN.
> On an air-gapped network, I have 3 Dell PowerEdge servers running Alma
> Linux 9 and 1 IBM SAN. I have 3 iSCSI connections from the IBM SAN to the
> 3 Dell servers. I am looking to install oVirt as 3 Enterprise Linux hosts
> on the 3 Dell servers. I need the 3 Enterprise Linux hosts to have shared
> storage, so all 3 hosts can access all of the virtual machines. I need the
> storage to have high availability, so if 1 host goes down the virtual
> machines can run on the other hosts. Which kind of storage do I use for
> this? NFS, iSCSI, cluster...etc?
> Also, do I connect the IBM SAN to only 1 host, and share that IBM SAN
> storage with the other 2 hosts, or would I create 3 separate iSCSI
> connections to each host? I would really appreciate any assistance from
> anyone. Thank you.
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-- 
   Derek Atkins 617-623-3745
   [email protected] www.ihtfp.com
   Computer and Internet Security Consultant

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