[THIN] Re: OT: UPS
- From: "Alexander Danilychev" <teknica@xxxxxxxxxxx>
- To: thin@xxxxxxxxxxxxx
- Date: Mon, 29 Jul 2002 23:54:32 -0700
Well... I can envision there are fancy things out there, like dedicated
network just for UPS communication with the server. However, serial
communication with the server is the most common and inexpensive. This
scenario usually notifies one server over COM2 which propagates the news to
other servers. Assuming we are talking about the MF Farm, it is unlikely
that you loose communication between your MF servers that are next to each
other and are on the same UPS when you have AC power failure. I will be more
concerned with UPS capacity and consider a backup generator.
ALEX
>From: "Starns, Chad M." <starns@xxxxxxxxxx>
>Reply-To: thin@xxxxxxxxxxxxx
>To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
>Subject: [THIN] OT: UPS
>Date: Tue, 30 Jul 2002 01:32:42 -0500
>
>
>Since people are talking about UPSs and power outages, I was wondering if
>anyone had suggestions on a good UPS. We have a group of Proliant servers
>that need to be protected. In the future I expect we will have some Dells
>as well. Our power needs right now are about 2750 W according to the APC
>site. We are looking at the APC Symmetra RM 4kva with one expansion frame
>(SYRMXR4B4). I noticed that these units communicate with the servers via a
>network connection. Does that mean when our routers go down do to power
>outage the servers don't turn off nicely? Does anyone know of a good
>solution that shuts down windows servers even if everything else is down,
>including the network?
>Thanks!
>Chad
>
>
>
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