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| !!25-Apr-2012 Sensitive little servers... |
| Tonight at the Melbourne DC there was some work done on the air conditioning system. |
| Two of our servers alerted us to deviation in temperature, and two more alerted us to some strange voltage fluctuations. We contacted the M2/Primus DC and asked what was going on and were told about the reset of the air conditioning. No other customers of the DC had reported any issues, so I guess we're monitoring more than other customers. We had 4 servers reporting issues, so it raised a definite red-flag with us. 20-30 minutes later 2 of the servers told us everything was ok again with voltages, and 10 minutes after that the remaining servers reported A-OK on the temperature variance. |
| Interestingly, during the same period, drive speeds on those servers dropped dramatically down from 240MB/s to around 3-4MB/s. I haven't seen that before and it was a strange occurrence. If drive speeds reduce dramatically on a server it usually indicates a RAID-battery failure or RAID-array problem. Two servers at the same time though? And it happened to be the same two which had alerted us about voltage fluctuations. After the alert-period finished and everything was ok, drive speeds immediately returned to their normal rate - literally within 1 second - I was watching them at the time while working in another window trying to determine the reason for the degradation. I can't find anything in the Dell documentation to explain why that would happen, but I guess the servers were just being extra careful. |
| Sensitive little beasts, but we love our Dells. |
| \\ |
