Solved

VMWare Redundant Cluster without Interim Switch

Posted on 2014-12-03
6
373 Views
Last Modified: 2016-11-23
Hi, quick question on a config I am looking at for a small VMware vSphere 5.5 cluster.

Looking at 2x Dell high powered servers with additional Dual Port 10GBs Copper on each for iSCSI connectivity.

For SAN looking at Powervault with dual controllers, each controller with 2x 10Gbps Rj45 copper.

My question is, since I only have 2 servers, shouldn't I be able to just connect each server directly to the SAN without needing to spend the extra bucks on redundant 10Gbps switches?

Each server would have 2x 10Gbps ports, one port each could go to each controller, so no matter if a controller went down, it would all stay up.

I can't remember from all of the VMware documentation if the ISCSI ports on the hosts need to be able to ping the ISCSI ports on the other hosts or not as part of the cluster heartbeats or something for full HA to work - which of course wouldn't be possible if they were directly plugged into the SAN?

I need to be able to do HA, vMotion, etc.

Thanks.
0
Comment
Question by:RFVDB
  • 3
  • 3
6 Comments
 
LVL 119

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 40478121
1. Both ESXi servers need to detect the same storage LUNs. So if you can configure you storage in such a way this is possible.

2. Cross-over cable between the two ESXi servers for vMotion Network.

But it's not very resilient, unless you cable up to network cables form each host to the storage controller.
0
 

Author Comment

by:RFVDB
ID: 40479332
1) Right, since each server will have 2x 10Gbps ports, 1 each plugged into each controller I think you can tell the SAN to represent the LUNs on all ports. The 10Gbps ports would just be used for ISCSI.

2) We have separate NICs for vMotion that will be plugged into Gigabit switches so connectivity won't be an issue there.

So is it just for VMotion and HA that the hosts need to be able to ping each other?

ISCSI doesn't matter right, as long as both hosts can see the same LUN?
0
 
LVL 119

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 40479396
Correct, vMotion and HA need connectivity between hosts.

iSCSI is Host to SAN, and all hosts need to see the same LUNs.
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Author Comment

by:RFVDB
ID: 40479401
Cool, thanks, I thought so, just needed a VMware Pro to verify.
0
 
LVL 119
ID: 40479546
no problems!

ping and vmkping is your friend to test!
0
 

Author Comment

by:RFVDB
ID: 40479935
Cool!

Just opened the same thread but for Xenserver 6.2. Not sure if you are familiar with that too? I have the same question.

The subject line is: "Xenserver Redundant Cluster without Interim Switch"
http://www.experts-exchange.com/Software/System_Utilities/Remote_Access/Citrix/Q_28574089.html

Not sure if you can look at that too?
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this step by step tutorial with screenshots, we will show you HOW TO: Enable SSH Remote Access on a VMware vSphere Hypervisor 6.5 (ESXi 6.5). This is important if you need to enable SSH remote access for additional troubleshooting of the ESXi hos…
Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
Teach the user how to configure vSphere Replication and how to protect and recover VMs Open vSphere Web Client: Verify vsphere Replication is enabled: Enable vSphere Replication for a virtual machine: Verify replicated VM is created: Recover replica…
Teach the user how to use create log bundles for vCenter Server or ESXi hosts Open vSphere Web Client: Generate vCenter Server and ESXi host log bundle:  Open vCenter Server Appliance Web Management interface and generate log bundle: Open vCenter Se…

831 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question