ESX 3.5 Dev and Prod environment

Hello all,.

I try to reshape our current VMWare environment and was looking for a direction of some other VMWare experts.  Here are the current settings.

______________________________________________________________________

Production:

3 - HP Blades all running VMWare ESX 3.5 (each server has 8 cores with 16 GB of RAM)

1 - Hitachi SAN with 8 LUNS (connected via fiber channel)

Development

2 - DELL 2850 times running ESX 3.0 (each has a quad core with 8 GB of RAM)

Connected to the HItachi SAN (via fibre channel)

1 - virtual instance Center controlling all servers

_____________________________________________________________________

We have just purchased 2 HP blades (Proc dual Quad Cores with 32 GB of RAM) and will probably improve to 2 of our existing blades to 32 GB of RAM. I have 2 questions regarding how I should structure the incoming environment with 2 new servers.  I am the new VMWare administration and the previous Admin and I disagree as to how the environment should be implemented.

A. should I collect all 5 blades in 1 big bunch (ESX 3.5) and then divide the environment through pools of resources?  Currently, I have a pool of resources DEV and the PRD in my environment of PRD.  DEV gets normal resources and a small reserve of CPU and RAM and greater PRD actions and more CPU and RAM reserved.

B. I could keep servers grouped in clusters 3 - 2 PRD - DEV (dev upgrade to 3.5 with new leaves) and then separated to the DEV and the PRD LUN and then only create pools of resources based on servers of high value on PRD.

The previous admin is worried because we used VCB in the past and had problems.  When we ran the nightly backups, we completely blocked our VMWare network and had to give up this for esXpress backup option. (2 network cards on each blade.  One for virtual machines, one for the host), he's afraid that he hosts learn all the available LUNS, the disk i/o could cause problems on our Hitachi SAN with all 5.  We should worry about?

Thanks for all your help.  Any ideas are greatly appreciated!

Joe

A. should I collect all 5 blades in 1 big bunch (ESX 3.5) and then divide the environment through pools of resources?

Yes.

B. I could keep servers grouped in clusters 3 - 2 PRD - DEV (dev upgrade to 3.5 with new leaves) and then separated to the DEV and the PRD LUN and then only create pools of resources based on servers of high value on PRD.

How big are the LUNS?  Try to separate your data between DEV / Prod will make you a lot of pain.  Besides if properly configure you your PII, you should not have any problem.  Mix and matching size IO / performance is actually good practice, rather than having 1 LUN for all high e/s and 1 LUNS of all e/s from the bottom.  It is generally accepted from them to mix together to get the best performance from your logic unit number.

The previous admin is worried because we used VCB in the past and had problems. When we ran the nightly backups, we completely blocked our VMWare network and had to give up this for esXpress backup option.

Probably why it is the 'previous' Admin, apparently he didn't know how to put in the right seat.  VCB / esXpress uses the same network, so it must have saturated the network by having too many jobs running at the same time, it does not matter the backup.  Network data control, not the reverse.

One for virtual machines, one for the host), he's afraid that he hosts learn all the available LUNS, the disk i/o could cause problems on our Hitachi SAN with all 5. We should worry about?

Nope.  IO is caused by too many virtual machines running non file / copy.  They READ the San not WRITE San, except if you make VCB to SAN then yes what will happen... Tell me are you not write these backups to THE SAN - tsk tsk.

Tags: VMware

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