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I do not power-off the ESX.
Simple I power-off all the VM on the MD3000 or MD3000i.
Or use SVmotion to move them to local storage or other shared storage.
And I do this kind of upgrade only when is really needed.
It depends if you still want your VMs to be online, if plan accordingly you will have a good upgrade without downtime, I did was 15 x 400GB MD3000i upgrade firmware to 7.xx version but has to promote a cheap shared NFS/iSCSI storage using OpenFiler and use Storage VMotion to move the VMs around as a staging destination. Once the upgrade has been completed, migrate them back and remove or repurpose your Openfiler or keep it for low key development servers. You may move to local disk if you want just for temporary but can't do any VMotion/HA though. You may want to use trial version virtual storage appliance like SANmelody or Lefthand's Network for better performance and portability reason. Otherwise, if you afforded to power them off just perform quick upgrade with planned downtime should be fine. Good luck.
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VMware vExpert 2009
iGeek Systems Inc.
VMware, Citrix, Microsoft Consultant
Thanks for the information,
I have just recently setup one openfiler SAN and simple ESXi server to hold a backup domain controller and a Backup Exchange SCR. Unfortunately, we had to use a quad-core desktop for the ESXi backup machine, because we don't have any further ESXi "server-quality" hardware, and the VM's require VT on the CPU (they are 64bit). Call me snobby, but I think that production VM's running on a desktop is a little bit flakey (although the openfiler machine has been working relatively well lately). Regardless, we've scheduled downtime for a particular weekend. At the same time, we need to physically rearrange the hardware in our racks to cater for greater expansion to our virtual infrastructure, so downtime is required regardless.
Thanks for your help, and any further ideas, tips or gotcha's that would be helpful for upgrading then powering down the MD3000i would still be much appreciated.
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