On Sat, 7 Jul 2001 09:12:48 +1200 (NZST) Juha Saarinen <Juha Saarinen
<juha@xxxxxxxxxxxx>> wrote:
> On Fri, 6 Jul 2001, Steve Lord wrote:
> > Using the rotational power of the spindle to
> > generate power to move the head to a special track and flush the cache
> > is not unheard of for instance.
> My systems integrator friend tells me that certain drives from IBM have
> large capacitors, which come in handy when the power goes out all of a
> sudden.
> For obvious reasons, if the drives are connected to a caching controller,
> make sure you have an UPS as well...
Or ensure it is a battery-backed cache on the controller.
Problem is these are the expensive ones.
If you do use an UPS, ensure it is a good one. I have seen
large systems brought down just because one part of the UPS
failed. I also know of a site that had a major fire caused
by the UPS.
--
Keith Matthews Spam trap - my real account at this
node is keith_m
Frequentous Consultants - Linux Services,
Oracle development & database administration
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