Actually, because I lost several thousands of dollars or equipement a couple of years ago, I recommended these "brickwall" products to a company. http://brickwall.com/index.htm We actually never deployed these units (grounding the communications lines ended up being a much cheaper solution) but I did talk and engineer at the company and apparently they have some hospitals as client that use unitss. I'm won't get into the technology of how they work since you can read that yourself but I remember having a warm and fuzzy after my conversation. I will pull one quote from their web site though... "Unlike MOV?s, TRANS-ZORBS and similar shunt based surge protectors that use elements weighing less than 1/4 ounce, Brick Wall surge protectors can easily absorb any surge repeatedly with absolutely no degradation." The important phrase here is "...absorb any surge repeatedly with absolutely no degradation." Quoting Tom Lane <tgl@xxxxxxxxxxxxx>: > Alex Stapleton <alexs@xxxxxxxxx> writes: > > suspicion is that if the power failure isn't a particularly fast one, > > (e.g. you overloaded a fuse somewhere, fuses are insanely slow to > > fail compared to alternatives like MCBs) then your RAID card's RAM > > will get corrupted as the voltage drops or the system memory will > > resulting in bad data getting copied to the RAID controller as RAM > > seems to be pretty sensitive to voltage variations in experiments > > i've done on my insanely tweak-able desktop at home. I would of > > though ECC probably helps, but it can only correct so much. > > Any competently designed battery-backup scheme has no problem with this. > > What can seriously fry your equipment is a spike (ie, too much voltage > not too little). Most UPS-type equipment includes surge suppression > hardware that offers a pretty good defense against this, but if you get > a lightning strike directly where the power comes into your building, > you're going to be having a chat with your insurance agent. There is > nothing made that will withstand a point-blank strike. > > regards, tom lane > > ---------------------------(end of broadcast)--------------------------- > TIP 1: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your > message can get through to the mailing list cleanly > -- Keith C. Perry, MS E.E. Director of Networks & Applications VCSN, Inc. http://vcsn.com ____________________________________ This email account is being host by: VCSN, Inc : http://vcsn.com ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
