RAID battery-backed cache - necessary?

Eric Rostetter rostetter at
Wed Feb 10 22:02:36 CST 2010

Quoting Eric Rostetter <rostetter at>:

> Or when the UPS stops on a prolonged power outage.  RAID batteries will
> generally go for weeks or months without power...  UPS batteries usually
> go for minutes or maybe a few hours without power...  Sometimes power is
> out for a while...

I should note I was thinking about only battery-based UPS systems above.
Doesn't apply to generator based ones and other types that can theoretically
run for long periods of time...  But I think most of use are using traditional
battery operated UPS modules, no?

Eric Rostetter
The Department of Physics
The University of Texas at Austin

Go Longhorns!

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