Julian Field mailscanner at ecs.soton.ac.uk
Wed Dec 18 18:58:16 GMT 2002

At 13:09 18/12/2002, you wrote:
>On Tue, 17 Dec 2002 14:08:45 +0000, you wrote:
> >> Correct, the one I saw in the magazine had it's own power supply.  We
> are in
> >> a datacenter with dual power grids to the building, redundent UPS systems
> >> for entire building with a generator outside.
> >> So power shouldn't be an issue anyway :o)
> >
> >"When a fail-safe system fails, it fails by failing to fail safe."
>On the 20th of november our fail-safe system operated perfectly. But
>there where no more systems to safe because our complete
>computerbuilding burned down.
>And still while the building is demolished you can see one little red
>light shining on the generator indicating the battery is operational.

Did you hear about when the IRA bombed the very centre of London? There
were servers  in the bottom of pretty-much destroyed buildings that were
not only still running with their disks still spinning, but they were still
network accessible too! More than 1 data recovery job was done reading live
data off the disks through the rubble before the UPS's gave out or the
disks finally died.

Anyway, back to Ramdisks. What I am going to try is putting
/var/spool/MailScanner/incoming on a tmpfs filesystem to see if it helps
the speed at all. All the data on there is volatile/transient anyway, so
you lose nothing if the power dies.
Julian Field
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