[plug] power loss

[Craig Ringer]

On Thu, 2004-03-04 at 16:24, Bernd Felsche wrote:

> Not replacing a UPS? That's like not having an insurance policy.

... on ten grand of computer hardware. It's not my decision :-( 

> I trust you have good backups and the facility to replace ciritcal
> hardware within a couple of days.

Yes, and mostly, respectively ;-)

We're able to recover to working capacity quickly using any top-end PC
hardware desparately grabbed from a nearby vendor, but to get back up to
full speed may take a week or more; especially if we lose the PSU in the
Xeon machine, or the 3ware RAID controller (Spares? Don't be silly....
*sigh*).

> A UPS doesn't just hold up mains power; it usually protects from
> surges and other nasties.

Indeed.

> 
> BTW: When you do the BIOS and management processor upgrades on your
> xSeries IBM, make sure that you power cycle it completely.
> [snip]
>  Else the
> system comes up in an indeterminate state; the CPUs don't run.

Ack. Thankfully, we don't use any xSeries hardware here, so we don't
suffer from that problem. One of our systems does support IPMI, but I
don't know to what extent - I don't think it'll have any sort of real
systems management subsystem on it.

Craig Ringer