Hi guys, Sorry for the OT. For the last couple of weeks I notice that the static in my server room is worrisomely noticeable. I cannot see what may be causing it.... Care to share some of your experience what may be the cause and the remedy? Thank you.
On 06/14/2011 08:39 AM, Fajar Priyanto wrote:> Hi guys, > Sorry for the OT. > For the last couple of weeks I notice that the static in my server > room is worrisomely noticeable. > I cannot see what may be causing it.... > Care to share some of your experience what may be the cause and the remedy?Low humidity would be my first guess. The relative humidity in your server room should be between 50% +/- 10%. Too high and you can get condensation. Too low and you get electrostatic discharges. -- Benjamin Franz
Fajar Priyanto wrote:> Hi guys, > Sorry for the OT. > For the last couple of weeks I notice that the static in my server > room is worrisomely noticeable. > I cannot see what may be causing it.... > Care to share some of your experience what may be the cause and the > remedy? >Change the settings on the HVAC units to humidify it *some*. mark
centos-bounces at centos.org wrote:> Hi guys, > Sorry for the OT. > For the last couple of weeks I notice that the static in my server > room is worrisomely noticeable. > I cannot see what may be causing it.... > Care to share some of your experience what may be the cause > and the remedy? > > Thank you. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centosCauses: Low humidity for temperature Improper footwear. Solutions: Air ionizer in server room Tweak humidity/temp control Felt slippers and/or anti-static grounding straps. Insert spiffy .sig here: Life is complex: it has both real and imaginary parts. Life is not measured by the number of breaths we take, but by the moments that take our breath away. //me ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.Hubbell.com - Hubbell Incorporated**
On Tue, Jun 14, 2011 at 4:39 PM, Fajar Priyanto <fajarpri at arinet.org> wrote:> Hi guys, > Sorry for the OT. > For the last couple of weeks I notice that the static in my server > room is worrisomely noticeable. > I cannot see what may be causing it.... > Care to share some of your experience what may be the cause and the remedy?We used to have real problems. If you walked across the floor and reached towards our mini it would spontaneously reboot. Not fun. We initially treated the carpet with an antistatic spray but ended up installing anti-static carpet tiles
Fajar Priyanto wrote:> Hi guys, > Sorry for the OT. > For the last couple of weeks I notice that the static in my server > room is worrisomely noticeable. > I cannot see what may be causing it.... > Care to share some of your experience what may be the cause and the remedy? >Check the humidity - if it gets too low (< 20%) this can cause problems> Thank you. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >-------------- next part -------------- A non-text attachment was scrubbed... Name: rkampen.vcf Type: text/x-vcard Size: 322 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20110614/5e61b418/attachment-0002.vcf>
On Wednesday, June 15, 2011 09:12:44 AM Brunner, Brian T. wrote:> Damage to circuitry is not all "instant-or-never"; damaged junctions can > take their own time (sometimes zero) to degenerate from > damaged-but-perfectly-functional to occasional errors to persistent > failure.The bullet-wound analogy is spot-on; I have a motherboard here that will sometimes boot without initializing the keyboard; also,k it will not successfully POST all the RAM (hard loacks during POST) but Memtest86 finds no memory problems. It operates, but it's not in a critical role. I'm fairly convinced it was careless handling three years ago that did it. In my PC 'Fix it' class at a local community college, I stress static issues with my students. This year, one is a retired highway patrolman, and he got the analogy very quickly. As to carpeted anti-static tiles, we have them. Most of our 30,000 square feet of raised floor is carpeted; only some vent tiles are non-carpeted, and they're perforated. The carpet has conductive fibers interwoven, and static is pretty much a non-issue, until humidity gets below 20%. Not a problem this time of year, for us. At least we don't have zinc whisker problems; our tiles are either too old or of the wrong kind of construction to have the whiskers. Dust isn't as bad of an issue as you might think, but stains are. And I do the vacuuming of the data center spaces myself, with a dedicated vac with HEPA filtration. Takes less than half an hour for the critical spaces, and gives me a good reason to inspect everything. The dust off the subfloor (while it *was* sealed when built, it still has collected dust over the years) is a worse problem that off the carpet.