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quick_guide:power_protection [2017/12/05 11:36]
gcooper 		quick_guide:power_protection [2017/12/05 11:43] (current)
gcooper
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 Yes, power protection is an expensive 'drag' that requires ongoing maintenance and cost.  But it is perilous to ignore. Yes, power protection is an expensive 'drag' that requires ongoing maintenance and cost.  But it is perilous to ignore.
 +
 +UPS units use lead-acid battery technology, like a car, and they fail predictably.  
 +
 +**UPS units must be replaced about every three years.**
  
 ===== Test Your UPS ===== ===== Test Your UPS =====
 +
 +<note warning>If you just yank the power cord with the PC booted fully into the OS, there is a significant chance you will cause filesystem damage (data loss) and Windows may not boot up again!</note>
  
 Testing existing UPS units in-place is not simple and **failing UPS units can cause very difficult-to-troubleshoot problems**.  Generally, we mark UPS units when we install them with the date of installation.  Then, we refer to that date when any question of UPS efficacy comes up.  We have found new UPS units are generally quite reliable up to 2.5 years of age.  After that point, we just replace them rather than spend time troubleshooting them...it's just more cost-effective. Testing existing UPS units in-place is not simple and **failing UPS units can cause very difficult-to-troubleshoot problems**.  Generally, we mark UPS units when we install them with the date of installation.  Then, we refer to that date when any question of UPS efficacy comes up.  We have found new UPS units are generally quite reliable up to 2.5 years of age.  After that point, we just replace them rather than spend time troubleshooting them...it's just more cost-effective.
  
 To test a UPS unit in place, we will generally reboot a PC just to the POST (BIOS) screen, then pause the boot (usually just by hitting the PAUSE or DEL key).  Then we yank the power cord so that the UPS cuts over to battery power.  If the PC stays up (doesn't immediately power off), we check the run-time.  If the UPS will keep the PC up for 5 or 10 minutes, we call that good.  While this is an unscientific test, it's fairly easy to do and indicative of the state of the UPS unit. To test a UPS unit in place, we will generally reboot a PC just to the POST (BIOS) screen, then pause the boot (usually just by hitting the PAUSE or DEL key).  Then we yank the power cord so that the UPS cuts over to battery power.  If the PC stays up (doesn't immediately power off), we check the run-time.  If the UPS will keep the PC up for 5 or 10 minutes, we call that good.  While this is an unscientific test, it's fairly easy to do and indicative of the state of the UPS unit.
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-<note warning>If you just yank the power cord with the PC booted into Windows, there is a big chance you will cause filesystem damage (data loss) and Windows may not boot up again!</note> 
  
 ===== When the Power Goes Out ===== ===== When the Power Goes Out =====
  
-If the power goes out, and your PC continues to run on the UPS battery (beeping), shut down the PC gracefully so as not to damage the disk filesystem when the UPS battery runs out.+If the power goes out, and your PC continues to run on the UPS battery (beeping), **shut down the PC gracefully** so as not to damage the disk filesystem when the UPS battery runs out.
  
 ===== Reference ===== ===== Reference =====
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 http://www.cbldatarecovery.com/blog/data-recovery/top-causes-of-data-loss http://www.cbldatarecovery.com/blog/data-recovery/top-causes-of-data-loss
 +
 http://www.databackuponlinestorage.com/7_Causes_of_Data_Loss http://www.databackuponlinestorage.com/7_Causes_of_Data_Loss
 +
 https://www.imobie.com/support/top-5-causes-of-data-loss.htm https://www.imobie.com/support/top-5-causes-of-data-loss.htm
 +
 http://www.nerd4rent.com/reports/powerproblems.htm http://www.nerd4rent.com/reports/powerproblems.htm
 +
 http://members.tripod.com/thecomputerguy__/power.htm http://members.tripod.com/thecomputerguy__/power.htm
 +
 http://www.techrepublic.com/article/10-things-you-should-know-about-deploying-a-ups/ http://www.techrepublic.com/article/10-things-you-should-know-about-deploying-a-ups/
quick_guide/power_protection.1512498991.txt.gz · Last modified: 2017/12/05 11:36 by gcooper

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