I hope this is an easy one and that I'm just over looking something. Whenever I reboot any of my ESXi 5.1 hosts it doesn't rescan for datastores by itself. It would be really nice for it to do this automatically. Any advice, help, or direction would be much appreciated.
ESX/ESXi actually does a scan and discovery for datastores and LUN's during boot.
This can be seen in the boot.gz file that is populated in /var/log of the ESXi 5.x hosts. So it does not need to do another rescan immediately after boot!
Are you seeing any issues with the LUN's not detected on first boot? Also what version of ESX/ESXi are you running?
You should still be able to configure portfast or "edge" depending on your physical switch. The 1000v doesn't send BPDUs and won't trip anything. STP negotiation time is probably your issue.
Let's say that STP negotiation time is my problem. How could I trouble shoot it? I guess that is what I'm looking for. I know what symptoms I'm having. Now I need to be able to troubleshoot the root cause.
we had the same problem on ESXI 6.0. we just the steps below and it worked.
We had a similar issue. ESXi 5.5. Our revolved around boot times ( or at least it appears )
We have a SAN that takes about 10 mins to boot. The 3 ESXi Hosts ( Dell's ) take only 3-5 mins to boot
So if the power goes out and the outage exceeds our UPS capacity and thus the systems all shut down,
when the power does come back up, all 3 Hosts are up and running prior to the SAN becoming available
Anyway to affect the boot order of things (Dell servers after EMC SAN) in hopes that the SAN boots first
so it's available when ESXi 5.5 is going through its "first scan" during its boot process?