10-27-2008 03:06 AM
we have problem with one EVA 3000 2c2d, the problem is both the cache battery on two controller is showing Amber light,
1) we have lost all the LUN connection with the server
2) why this could have happened because all two batteries in both controller failed, can i restart the EVA
10-27-2008 03:25 AM
the docs are here:
a) when an amber LED is on both battery assemblies, you must replace the corresponding cache batteries
b) in this situation there is no disk presentation
never remove the batteries from the powerdown controller (only when its powered on)
both batteries must be removed from the enclosure before installing the replacement ones. Otherwise the failure can be propagated to the newly added battery
furthemore the both batteries removal resets the battery system status
10-27-2008 03:28 AM
I've been told that, unfortunately, there is no way to tell the system: "hey, I know that the cache batteries are bad, but I really, really, do need access - please give me access to my data. I am willing to take the risk of operating with non-working cache batteries which can result in data loss, please, please"
10-28-2008 12:36 AM
Occasionally the VCS firmware and the firmware on the batteries gets things wrong, and the bad state on one battery gets copied to the other battery...
Did you by any chance try swapping batteries around with the controllers shut down ? That could have made things worse.
Unfortunately the only way out of this situation is to get hold of 4 new batteries. To make things worse, these batteries are now getting quite difficult to get hold of. Part number is 235870-001.
A word of warning, make sure that you follow the instructions (usually included with the batteries) when replacing them, or you could end up with the failed state being copied onto the new batteries.
10-28-2008 12:55 AM
we didnot swap the batteries between controller, yesterday we saw that there is amber light on 4 batteries.
i am afraid what could have made all four barrties fail at a time. there was no power disturbance aslo.
10-28-2008 02:07 AM
I'd have thought it unusual for all four batteries to fail at the same time... Is it possible that it may have been running in a degraded state for a while, before the second batteries failed ?
What troubleshooting steps have you done so far ?
Do you have a support contract ?
If not, the first thing I would try would be to do a complete power cycle. That *might* clear things up.
Another thing you could try is to boot up the controllers with just one battery in each.
10-28-2008 04:55 AM
i didn't restart because i am afraid if the data will corrupt, what i have done is i have ordered for four batteries, awaiting for the deliverly of that
will it harm or is it recomemended to restart the eva now in this state
10-28-2008 05:14 AM
a) both failed batteries should be removed from the enclosure not to allow the failed battery propagation to the new battery
b) the amber LED will go off 2 minutes after both new batteries placement into the controller (LED off means that they work fine)
c) the batteries will be fully charged in 30 hours
d) till then the batteries will be at the low state and all the writes will go directly to the diskss via the writethrough cache policy,
(which could drammaticaly affect the host IO performance)
10-28-2008 05:17 AM
10-28-2008 07:25 AM
2) You can restart the EVA without any problem. You will not loose any data.
On EVA3000, even if one battery fails, you will need to replace both of them.