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vmware with VSA

Hi Experts,

I want to use VMWARE with VSA.
I have a license for Essentials Plus and I want to use two hosts.
But I will not use an extra SAN.

Can I use this technology VSA with my two hosts ?
Each hosts has 10 TB of disk space, but no SSD.
Can I create a virtual storage with this two hosts ?
Do I need a SA switch for it ?
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Eprs_Admin
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Eprs_Admin
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5 Solutions
 
Eprs_AdminSystem ArchitectAuthor Commented:
Do I need a SAN switch for it ?
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Joseph DalyCommented:
From the information you provided you should be able to run VSA on these two hosts.

Your Essentials Plus license version is supported.

Your disk space is sufficient as long as you follow vmwares guidelines for storage.

VSA is meant to be used in situations where a san is not available/affordable.

See the specs below.
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsa.doc_10%2FGUID-31855B3A-E36C-47D6-8436-D69C9093BE2B.html
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You can create VSA on your two hosts.

Please take care to follow the prerequisites for VSA, they are not as straight forward as you may think.

e.g. networking IP Addresses, Subnets, vCenter Installation, RAID type and number of disks in RAID.

You do not need a SAN Switch, as networking is completed internally, using existing switches.

Ensure you are using HA and DRS (if applicable), and please ensure you TEST TEST TEST and TEST again before you go to Production, many mistakes are made, and VSA is not tested, before you jump in, and go into Production.
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robocatCommented:
Actually you need a third physical machine which runs the VSA cluster service. This can be any server, eg. it can be combined with the virtual center server.

Three hosts are always needed because the VSA cluster requires for 2 members to be online to work. The third host does not need to be an ESX host.
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Eprs_AdminSystem ArchitectAuthor Commented:
Hi Robocat,

I never heard about it.
From my point of view, 2 HOSTS are minimum, better three hosts.
But with 2 hosts it should work too.
Can anyone confirm this ?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, two hosts are fine, for the storage, but @robocat is also pointing out that you need a server physical or virtual for the VSA cluster service, many use their vCenter Server for this role.
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Eprs_AdminSystem ArchitectAuthor Commented:
ok I see, it is not needed to have a physical one.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
No requirement for a physical server, only for storage nodes, do you require physical.
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robocatCommented:
Actually, you do need a third physical server.

The VSA cluster uses a voting system that requires two out of three members to be online at all times. Two cluster members are the physical ESX hosts, the third can be a service than is installed on any Windows server.

Suppose you put this third cluster member in a VM on one of the ESX hosts. If one physical host experiences a total failure, you can lose 2 cluster members at once (the ESX server + the VM containing the service).

The third member should be on an unrelated host to avoid this situation. But it can be anything, an old PC can suffice if you don't have a physical vcenter server.
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