| 00:41.02 | *** join/#fredlug GGD_ (~IceChat7@ip72-196-241-104.dc.dc.cox.net) |
| 15:25.25 | *** join/#fredlug plarsen (~plarsen@ip65-46-125-186.z125-46-65.customer.algx.net) |
| 15:57.45 | plarsen | jsmith: have you ever replaced a APC UPS battery "hot" ? |
| 15:58.23 | jsmith | plarsen: No I have not |
| 15:58.29 | jsmith | plarsen: Nor would I ever wish to |
| 15:58.40 | plarsen | hmmm - me neigther. APC says smart ups are hotplugable |
| 15:58.55 | plarsen | jsmith: I'm in NO mood to shutdown the whole EMC array today :) |
| 15:59.29 | plarsen | It's just a plastic plug on the front hat connects the battery. However, there's some juices in there that are scary! |
| 15:59.45 | jsmith | plarsen: Eeew.... Either way, you're in trouble. If you don't take it down and try to do a hot swap, something will fail and you'll either be dead and/or have a dead EMC |
| 16:00.05 | plarsen | wonders what is worst .... |
| 16:00.07 | plarsen | :D |
| 16:00.12 | jsmith | plarsen: If you do shut down the EMC array as a precautionary measure, you'll hear lots of complains about productivity |
| 16:00.29 | plarsen | jsmith: Getting those already. That's why I want to fix the battery |
| 16:00.40 | jsmith | If you *do* decide to do the hot-swap, wear rubber gloves |
| 16:00.47 | plarsen | uhmmm |
| 16:01.07 | plarsen | Wonder if they sell those at Microcenter :D |
| 16:01.17 | jsmith | Not only can the electricity zap you, but the battery acid and corrosion get all over your clothes :-( |
| 16:01.44 | plarsen | jsmith: right - the battery comparment is enclosed though. You remove the whole compartment |
| 16:01.59 | plarsen | (rack mountable UPSes are much easier than the office ones) |
| 16:02.00 | jsmith | plarsen: Ah, must be a nicer model than the last one I looked at |
| 16:02.07 | plarsen | old one. 2200RM |
| 16:02.20 | jsmith | hasn't touched an APC-brand UPS in five years |
| 16:02.41 | plarsen | What brands are popular now? For datacenters that is. Not home use. |
| 16:02.51 | plarsen | well, RACKS :) |
| 16:03.31 | *** join/#fredlug GGD_ (~IceChat7@ip72-196-241-104.dc.dc.cox.net) |
| 16:05.10 | jsmith | plarsen: To be honest, we never used a UPS in the data center. We used redundant power connections and a static transfer switch |
| 16:05.54 | jsmith | (and, for added redundancy, each server had two power supplies, and each supply was fed from a different PDU) |
| 16:06.14 | plarsen | jsmith: how did you provide "smooth" power? |
| 16:06.41 | plarsen | jsmith: i would love to read more about that one. Just specified power for a datacenter abroad, using generators etc. |
| 16:06.46 | plarsen | If there are better ways I'll love to learn |
| 16:06.50 | jsmith | plarsen: Both the static switch and the PDUs conditioned the power |
| 16:07.07 | jsmith | plarsen: (the static switches more than the PDUs, but still...) |
| 16:08.06 | plarsen | jsmith: hmmm - and in Utah you guys never had a blackout? |
| 16:08.50 | jsmith | plarsen: Our data centers weren't in Utah |
| 16:09.02 | jsmith | plarsen: We were in *very* expensive data centers in San Jose and Dallas |
| 16:09.37 | jsmith | brb |
| 16:09.39 | plarsen | Ahh - my misunderstanding. So they had power from two independent sources? |
| 16:09.40 | plarsen | ok! |
| 16:19.18 | jsmith | Yeah |
| 16:19.33 | jsmith | Two independent power feeds |
| 16:19.50 | jsmith | Different generators, different power conditioning equipment, different routes through the data center, etc. |
| 16:19.57 | plarsen | jsmith: assuming one is from a local generator? |
| 16:20.12 | plarsen | :) Well, in which case there must be batteries for the few minutes it takes for the generator to come online? |
| 16:20.32 | jsmith | plarsen: Rooms and room and rooms full of batteries. |
| 16:20.59 | plarsen | Sorta what I specified our ours. Exactly - batteries in a "central location" and it conditions the power and provides the few minutes of buffer time when the thing cuts over. |
| 16:21.00 | jsmith | plarsen: The battery rooms would keep the data center operating at least 15 seconds until the generators could come online |
| 16:21.20 | plarsen | jsmith: yeah, 2 minutes in my case. Not the US so better be sure |
| 16:22.26 | plarsen | However, this one is local. However, the batteries in this case is from APC "Symetrix" and they're hotplugable too. Can't just take the center down when you need to replace a battery. |
| 16:22.47 | plarsen | Just never done that before. |
| 16:25.48 | jsmith | Yeah... |