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How often do you replace your USB boot drive?
A thought came across my mind as I was upgrading from 6.0 to 6.0U1 - I've been this stick for around 18 months now. That's led me to wonder how long others use a USB stick for before replacing it, barring outright failure.
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Huh - I have never really thought about it personally; I have USB thumb drives that are several years old that still work fine and given that the ones in my ESXi hosts (where applicable) are rarely if ever taken out, I doubt that they see much wear and tear.
Depending on the size of your environment, losing a ESXi due to a USB problem may be a non-issue; if you have HA enabled (or FT) and auto deploy and/or host profiles setup, you can get a new host up and running fairly quickly.
Just my $.02; good general question though - I look forward to seeing what others have to say.
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My understanding is that ESXi runs completely in memory after startup is complete, so even if the USB stick failed during use it wouldn't be noticeable until the next startup or reboot, at which point dealing with the problem would simply be a matter of routine maintenance.
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yes, vSphere runs in your Memory, if the Thumbdrive should fail, nothing will happen.
Just set the Host to Maintanance Mode and evacuate your vms to another Host while you fix the Problem with the Drive.