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Posted on 2011-02-10
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Last Modified: 2012-05-11
Hi,

I was wondering if I have SAN storage. and few machines.

And want to run a small private cloud. Say few Win7 machines and few CentOS machines. With some sort of failover. So one machine fails it can failover to another machine using the same storage? Is this possible using current platforms?

Thanks
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Question by:masdf123
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bgoering earned 1000 total points
ID: 34867475
Certainly - look at VMware vSphere http://www.vmware.com

You would need at minimum the esseentials plus package for HA to accomodate failures

Good Luck
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1000 total points
ID: 34867477
Yes, you could build it with a physical SAN, or if you just want to try out the technology, you can build VMware in a BOX or ESX in a Box.

if you follow these articles

VI in a BOX

http://xtravirt.com/xs10003

you can install Two x VMware ESX Servers iin VMware Workstation, and Virtual SAN software and complete your private cloud and test HA, DRS, vMotion failover.
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by:bgoering
ID: 34867482
If you go with VMwares full "cloud" platform you would need a higher licensing level in addition to the cloud software add-ons. I think it only installs on Enterprise Plus.
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by:masdf123
ID: 34867493
OK. Are there any open source solutions? Because vshere and vcenter can be expensive. And I think I need vcenter for sure to do HA?
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by:bgoering
bgoering earned 1000 total points
ID: 34867494
See http://www.vmware.com/products/vsphere/buy/small_business_editions_comparison.html for a comparison of the features available in each edition.
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by:bgoering
ID: 34867500
I think you can use Xen or KVM on linux platforms. There are fully opensource as well as open and supported editions of those. I am not certain about their support for high availability and failover though as I don't use them myself
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by:masdf123
ID: 34867509
So what is difference between vsphere and vcenter?
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by:bgoering
ID: 34867513
And yes - you do need vCenter to do the HA, The Essentials plus edition is the minimum required to do HA - its retail cost is $3495, but if you shop around you can do a bit better than that
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by:bgoering
ID: 34867515
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by:masdf123
ID: 34867517
So if I have vcenter, I dont need vsphere right?
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by:bgoering
ID: 34867519
vSphere is the overall name of the platform, vCenter server is the managemt / monitoring piece, and ESX or ESXi are the servers that host the virtual machines.
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1000 total points
ID: 34867522
Parallels has a Cloud Hosting solution which is much cheaper than VMware Cloud Director.

http://www.parallels.com/

it's based on their Parallels Virtuozzo Containers.
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by:bgoering
ID: 34867524
"So if I have vcenter, I dont need vsphere right?" They are pretty much the same thing.
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by:masdf123
ID: 34867529
So when we say HA. We assume the storage VM's are using is redundant and HA then provides ESX server failover, is this correct?
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by:masdf123
ID: 34867538
I think I confused it with the vshpere infrastructure client.
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LVL 124
ID: 34867546
Correct, until vSphere 5!
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by:masdf123
ID: 34867551
what does vSphere 5 bring?
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ID: 34867552
then we get new super functionality of HA of the Storage Datastores as well!
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by:masdf123
ID: 34867556
oh wow. So there is HA of the stores after a SAN storage as an example?
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by:masdf123
ID: 34867561
Thats like Exchange DAG
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by:bgoering
ID: 34867562
When we say HA, it means if one host (ESX or ESXi) fails, the virtual machine will automatically be restarted on the other host. For a good HA solution there are a number of pieces one should consider besides just the storage. Of course the storage shoulc be configured with a fault tolerant raid solution, have multiple power supplies, etc. but also consider.

reduandancy in
   networking
   ups
   servers
   air conditioning

all of the things that go into making a continous operating datacenter
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by:bgoering
ID: 34867585
I was a bit underwhelmed with what I heard about vSphere 5 from the partners exchange. The biggies I guess are.

Storage will kind of autotune itself (Storage DRS)
Some replication capabilities for their DR solution that don't require hardware replication in the storage
Ability to throttle some network connectivity on a per vm basis

thats about it, what was missing for me was long distance vmotion - was hoping for that
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LVL 124
ID: 34867586
vSphere 5, which is due out this summer, will add Storage DRS, HA, host-based replication, vMotion over long distance and network I/O control at the virtual machine level.

At present we have VM - HA, DRS, vMotion moving VMs between ESX Hosts.

Storage DRS, HA will use Storage vMotion to perform automatic load balancing if a datastore becomes overloaded.

Storage DRS,HA users will be able to define groups of data stores, called “storage pods,” that will automatically load-balance based on capacity. Users can then provision virtual machines (VMs) to specific storage pods rather than to specific data stores.
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LVL 124
ID: 34867590
@bgoering: vmotion over long distance is in, we've been testing for months....
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LVL 124
ID: 34867599
@bgoering: however, what's not been defined as to what options will be in which license level! and there could be a Super Datacenter License! above Enterprise Plus, Enterprise Plus Plus
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by:bgoering
ID: 34867616
@hanccocka: not according to http://searchservervirtualization.techtarget.com/news/2240031960/VMware-previews-vSphere-5-at-Partner-Exchange

No mention of stoage HA (what would that be anyway?) just storage DRS and host based replication for the SRM product.

This article also states the long distance vmotion (along with SLAs) are slated for a 2012 release...
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by:bgoering
ID: 34867626
@hanccocka undoubtably on the licensing - I am still a bit perturbed that I have to go to a new higher licensing tier to get all the features when I was an Enterprise customer on 3.5
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ID: 34867639
@bgoering: I'll have to speak to the Channel, in May 2010, they stated it would be in vSphere 5, because of the work with the Cisco alliance, and Cisco were very keen for the option. 2012....what version would that be, an update?
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by:bgoering
ID: 34867682
<rant>
Who knows - they have run the gamut 2.5 3.0 3.01 3.02 3.5 3.5 U1 (2,3,4,5) 4.0 4.0 U1 & 2, 4.1

I can't find any rhyme or reason to the number scheme - it all seems kind of arbitrary. I am gathering the change the first number when they want to introduce a new licensing level to get the useful features of the new release that SHOULD be entitled to anyway (IMNSHO) because of all the maintenance I pay
</rant>
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by:masdf123
ID: 34986012
This post had good info. Thanks guys!
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by:Qlemo
ID: 35399094
This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.
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