Re: Raid 10 chunksize

On Wed, 1 Apr 2009, Scott Marlowe wrote:

> Meteor strike is far less likely than a power surge taking out a UPS.

I average having a system go down during a power outage because the UPS it 
was attached to wasn't working right anymore about once every five years. 
And I don't usually manage that many systems.

The only real way to know if a UPS is working right is to actually detach 
power and confirm the battery still works, which is downtime nobody ever 
feels is warranted for a production system.  Then, one day the power dies, 
the UPS battery doesn't work to spec anymore, and you're done.

Of course, I have a BBC controller in my home desktop, so that gives you 
an idea where I'm at as far as paranoia here goes.

--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD