@Vlinderbeest said in Infrastructure Needed for Hypervisor Cluster:

@scottalanmiller said in Infrastructure Needed for Hypervisor Cluster:

Clustering is done when the cost of clustering is low versus the risk of not clustering.

I would change that slightly to Clustering is done when the cost of clustering is low versus the cost of not clustering. A risk is always a cost, but some costs are not risks. For example taking down a hypervisor for maintenance vs moving guests to another node and taking down a free node for maintenance.

Sure, using risk cost vs investment cost as cost v cost is a perfect valid way to look at it. I use that all the time in the opposite way.

You can say that risk is a cost. Or conversely, you can look at the clustering cost up front as essentially a "financial event" similar to an outage.

Also XenServer (and soon to be XCP-ng) have a vSAN type of approach as well.

I'd ask @olivier to explain how it all works though.

@gjacobse said in Linux and Windows argument:

@Dashrender said in Linux and Windows argument:

@momurda said in Linux and Windows argument:

@op's question:
So now what do you do? If I drop completely to Linux - something like this would become a rather annoying event. As someone that has five iPads (in use), four iPods and two iPhones, that could get damn right perturbing.

Stop using Apple products would be my answer. Though you seem to be in too deep already.

That doesn't make sense though - Scott is a HUGE apple fan, and he's on Linux now too.

I tend to agree with Scott's comment earlier, if this is a problem, borrow a friends computer.

So - take @scottalanmiller and the fact that he is now over seas - how practical is borrowing a friends computer?

I can borrow my daughter's.

@scottalanmiller And Starwind ships their ready nodes armed with RAID https://www.starwindsoftware.com/starwind-hyperconverged-appliance so i think they still keep doing RAID and i am sure it is for a reason some of them I've mentioned above.

@Dashrender said in Cost Study: 3 Node Scale vs. 3 Node VMware IPOD:

@wirestyle22 said in Cost Study: 3 Node Scale vs. 3 Node VMware IPOD:

@Mike-Davis said in Cost Study: 3 Node Scale vs. 3 Node VMware IPOD:

@Dashrender yes, I was thinking of agentless solutions like Veeam. So if it has KVM support it will work with Scale?

I wish I could help you with this. No place that I've worked at has needed something that big 😞

I came really close - I just missed the Scale boat. 3 years ago when looking at a replacement EHR I posted about some ridiculous needs. Many conversations with Scott - and Scale never came up. Looking back, I have to assume that Scale wasn't something we knew about quite yet. Instead I was looking at a $100K two server setup with something like 20 disks each (mainly for IOPs - this was pre acceptable SSD pricing). Management went with another solution (one they hate today) because the startup costs where so high.

Found my old crazy thread.
https://community.spiceworks.com/topic/310103-new-greenway-install?page=2

Yeah I was reading your thread earlier. It's interesting.

@Dashrender said in Replacing the Dead IPOD, SAN Bit the Dust:

@scottalanmiller said in Replacing the Dead IPOD, SAN Bit the Dust:

Also the needs of a SAN are different than the needs of a LAN. So you likely want different switches. I'd love Netgear Prosafe unmanaged on my SAN but would generally prefer Ubiquiti EdgeSwitches on my LAN.

Any opinion on Unifi Switches yet?

We use one in the lab and it's been great, but we aren't pushing its limits or anything.

Added: https://mangolassi.it/topic/9796/how-reliable-is-your-server