Not too long ago I read an article that discussed this.
Apparently (and I've long forgotten the specifics) if you have an in line
Surge Suppressor, your UPS & Surge suppressor can get into a round
robin/feedback type situation wherein you end up damaging the equipment
after it gets a spike or two.
Since most suppressors are only good for one or two spikes, and by all
rights you should not need one if you have a good UPS (that does this for
you) you might be safer avoiding it.
Most people don't realize that you must replace the surge suppressor every
six months or so...
-JMS
|-----Original Message-----
|From: Tom Brinkman [mailto:[EMAIL PROTECTED]]
|Sent: Sunday, June 18, 2000 6:59 PM
|To: [EMAIL PROTECTED]
|Subject: Re: [newbie] Power failures whilst in LM
|
|
| Gary I agree with what you're saying except for the part
|about using surge protectors. Everything I've heard/read including
|the docs that came with my APC BackUPS said *do not* use a surge
|protector either before or after the UPS, ie., inline. 'Cause to
|be honest, I was fixin to plug it in to a surge protector ;-)
|
| Now I do use my surge protector (APC), but only everything else
|besides the monitor and computer (which are plugged into the UPS),
|are plugged into it. The UPS has it's own surge protection .... or
|maybe i misunderstand you?
|
|--
|~~ Tom Brinkman [EMAIL PROTECTED]
|
|On Sun, 18 Jun 2000, you wrote:
|> I'd like to reply to item one. The cheapest insurance you can have (for
|> your equipment (that is, literally, it's logevity), operational
|reliability,
|> software (lack of corruption problems), piece of mind, personal
|free-time,
|> etc.) is a GOOD surge/spike (maybe with RFI) protector, or two,
|and a quick
|> (less than 4 micro-seconds (less is better, but the extra speed
|may or may
|> not be necessary)) UninterruptablePowerSupply (operating at 50%
|or less).
|> I say two surge/spike protectors because they use MOVs and
|these can take
|> hits and lose effectiveness, and there is no way to test for it.
| I've had
|> problems and found tham caused by power, and I use 2
|surge/spikes and a UPS.
|> Color me conservative!
|> I suggest a UPS running at less than 50% of rated capacity
|because that
|> gives more operating time "on battery" to complete operations
|and shut down,
|> and room to grow: i.e. you can replace equipment (even add)
|without worrying
|> about exceeding the capacity of the UPS (in which case it would
|very likely
|> fail to work).
|> A UPS is one thing you can buy based on specifications,
|surge/spikes less
|> so. A well reputed manufacturer will cost you a little, but
|this will pay
|> back over the life of the item. Just try to find support or
|batteries for a
|> UPS a couple of years after the company sold the operation. I
|was fortunate
|> that I could take care of the problem, and when I needed to buy
|a replacement
|> UPS I bought APC brand (a very good brand in the United States,
|often used
|> for network servers). Find out what equipment is being used to protect
|> networks, it's a good general measure of quality. -Gary-
|>
|>
|> In a message dated 6/18/2000 3:36:29 PM Eastern Daylight Time,
|> [EMAIL PROTECTED] writes:
|>
|> << Hi Friends
|>
|> 1. What safety measures/preventative action should I take to
|minimise the
|> effects of sudden power failures.
|> 2. I read somewhere that switching off the system without
|logging out in the
|> recommended manner (equivalent to a power failure) can/will
|(I'm not sure
|> which) result in corruption of sys files rendering LM unbootable (or was
|> that an exageration).
|> 3. For example are there special keyboard inputs I can make to save that
|> which is in Ram as I go along, say every 10 minutes.
|> 4. Win will scan the disk and save corrupt or unlinked files -
|what does LM
|> do in this situation.
|>
|> Thanks
|>
|> Alan (South Africa)
|>
|> >>
|
