[Nut-upsuser] Will MGE-UPS Ellipse USBS auto shutdown?

[Daniel O'Connor]

On Sunday 13 August 2006 16:49, Peter Selinger wrote:
> Not all UPS hardward and not all drivers support ondelay/offdelay.  In
> any case, you should let your system shutdown script kill the UPS, at
> the very end, after all the disks have been mounted read-only, and
> just before the system is normally halted. This will turn off your
> computer safely. -- Peter

Any UPS worth it's salt has ondelay/offdelay (of some form) for 2 reasons, 1) 
without it you can get into a situation where the UPS will not power cycle 
the load if the mains comes back on at the wrong time, and 2) not all 
operating systems re-mount disks read only at shutdown (eg FreeBSD runs 
shutdown procedures then the kernel flushes and un-mounts the disks)

As for ondelay/offdelay having the same value - NUT disallows it and makes 
sure that ondelay is longer.

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://lists.alioth.debian.org/pipermail/nut-upsuser/attachments/20060813/970d36b8/attachment.pgp