| From: | Greg Smith <gsmith(at)gregsmith(dot)com> |
|---|---|
| To: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
| Cc: | Stef Telford <stef(at)ummon(dot)com>, Mark Kirkwood <markir(at)paradise(dot)net(dot)nz>, Scott Carey <scott(at)richrelevance(dot)com>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Raid 10 chunksize |
| Date: | 2009-04-01 17:49:46 |
| Message-ID: | alpine.GSO.2.01.0904011344210.2028@westnet.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
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(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Matthew Wakeling | 2009-04-01 17:54:04 | Re: Raid 10 chunksize |
| Previous Message | Matthew Wakeling | 2009-04-01 17:33:16 | Re: Very specialised query |