VMFS datastore showing greyed out, inactive and unmounted

Robin CM's IT Blog

I’ve been having “fun” recently with VMware storage issues following a temporary loss of power to one of my two EMC Clariion CX4-480 SANs. The power outage was expected, and the SAN was shut down before the electricity was lost. However, ever since I’ve been periodically getting hosts greying out in the vSphere client. They’d eventually come back to life again, and the VMs running on them didn’t seem affected – though they did grey out in vSphere client too and were thus not manageable, but it was worrying – something wasn’t happy.

One host (they’re all running ESXi 5.0 update 2, build 914586) in particular had had several of these issues, more so than the others. So this morning, when it was looking normal, I decided to try putting it into maintenance mode (which worked) and then rebooted it once all the VMs had been moved off it.

When it came…

View original post 326 more words

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s