[evla-sw-discuss] pwoer event at VLA?

[Ken Sowinski]

On Sun, 20 Nov 2016, K. Scott Rowe wrote:

>
> There seems to have been some sort of power event at the VLA.  Our
> main VLA switch along with infrastructure servers (amos, andy, etc)
> all rebooted about 10:30 this morning.  The operator said he didn't
> notice any power event and hosts in the new coorilator room did not
> reboot.  My current guess is it only affected the old corrilator room.
>
> Most things are back up now execept for ea12 which may need to be
> power cycled and half of the corrilator boards (racks 1 through 4).

We are back observing again.  The damage is consistent with what
K Scorr reported: everything in the old correlator room lost power.
Most of the problems we saw were related to CMIBs and MIBs that
were upset at the loss of communication.  There is no evidence
that anything in the correlator room or the antennas lost power.

My guess is that the control building UPS hiccuped for some mysterious
reason of its own.  Perhaps there are logs or status lights that
can be examined.

Ken