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ATL2VEGAS
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Do we need DRS or VMotion for fault tolerance? Small 3 host cluster

Hello,

I am slighly confused on some information coming from two different directions. We are in the purchasing stages of a Vsphere Essentials Plus package and plan to build out a 3 host cluster with shared storage. The VSphere essentials plus package comes with HA which from my understanding will fail over automatically and restart the VM's on the available server. In the event of a server failure does Vmotion or DRS provide anything more than HA.

We are being told that VMOTION & DRS will move the VM over from a FAILED to an available server without restarting the VM. I'm not sure how that's possible but I wanted to check with the community first.

VSPHERE 4 ESSENTIALS PLUS seems great for small 3 host deployments @ $2,600 however that same lic. for the regular VSPHERE Enterprise is $2,800 per CPU which @ 6CPUS's is over $17K. So why should we spend $17K for enterprise verus a $2,600 essentials plus lic for such a small deployment?

Thank You,

AC

Andre Chambers Contract IT Consultant Medium & Enterprise Business Solutions AndreChambersLV@gmail.com 702-203-9068
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AntonVZhbankov
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Yes, it's a new feature. http://www.vmware.com/products/fault-tolerance/

It can work over existing links, but it is recommended to have dedicated interface for FT.


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VMware vExpert '2009

http://blog.vadmin.ru

EMCCAe, HPE ASE, MCITP: SA+VA, VCP 3/4/5, VMware vExpert XO (14 stars)
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mehul96
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Let me offer some clarity

1. Vmotion allows you to migrate a running VM on shared storage from one host to another

2. DRS allows you to load balance hosts by Vmotioning VMs from a busy host to another

3. HA provides fault tolerance by starting VMs on another running host when a cluster host fails

In other words, VMotion and DRS do not (and cannot) handle failures

Mehul

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AntonVZhbankov
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Yes and no.

Fault Tolerance is included to Advanced package, which also includes VMotion.

If you mean "fault tolerance" and not "Fault Tolerance", then no. It is called HA (High Availability).

1. HA restarts VMs from failed host on remaining.

2. VMotion allows you mmigrate VM from one live host to another without downtime.

3. DRS balances load on different hosts using VMotion.


---

VMware vExpert '2009

http://blog.vadmin.ru

EMCCAe, HPE ASE, MCITP: SA+VA, VCP 3/4/5, VMware vExpert XO (14 stars)
VMUG Russia Leader
http://t.me/beerpanda
ATL2VEGAS
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Fault Tolerance is a new feature available in Vsphere that was not available in previous versions? Can it ride on the same shared gigabit network as Vmotion or would we need a shared 1GB network for Vmotion and one for FT.

Thanks In Advance,

AC

Andre Chambers Contract IT Consultant Medium & Enterprise Business Solutions AndreChambersLV@gmail.com 702-203-9068
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AntonVZhbankov
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Yes, it's a new feature. http://www.vmware.com/products/fault-tolerance/

It can work over existing links, but it is recommended to have dedicated interface for FT.


---

VMware vExpert '2009

http://blog.vadmin.ru

EMCCAe, HPE ASE, MCITP: SA+VA, VCP 3/4/5, VMware vExpert XO (14 stars)
VMUG Russia Leader
http://t.me/beerpanda
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