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On Sun, 2008-05-11 at 16:35 -0400, Hal Martin wrote: |
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> Arthur Britto wrote: |
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> > You likely want more than a minute. Most likely, you don't want your |
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> > system to crash when coming back up when power fails soon after it is |
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> > restored: your system could be in the middle of a fsck. Generally, you |
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> > want enough capacity to: power off, power on, and then power off safely. |
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> > |
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> True, but I find the main purpose of my UPS is to keep the computer |
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> running throughout a short power-outage. That's what happens 90% of the |
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> time, the other 10% of the time, the power outage lasts longer than the |
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> UPS and it shuts the computer down. |
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I should have written "At a minimum". More to the point, the threshold |
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at which you first shut your computer down should leave enough battery |
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capacity for you to safely power up and down again. |
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My usual advice also includes: |
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* Do not run a system without a UPS, if you want a stable system. |
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* Having a UPS appears to increase disk life. |
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* Do not plug a surge suppressor into a UPS. |
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* Get the largest capacity UPS you can comfortably afford. |
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-Arthur |
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-- |
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