On Fri, Jul 1, 2011 at 1:05 PM, Timothy Murphy <gayleard at eircom.net> wrote: > I have a CentOS-5.6 remote server in a house in Italy, > where there are occasional thunder-storms. > > There was one yesterday, when the electricity > went off 3 times, for a second or so on each occasion. > > My server, an HP MicroServer, > came back (re-booted) on 2 of the 3 occasions, > but not on the third. > > I assume that the problem arises because the machine > does not close down properly. > (Although it is also possible that a voltage surge > might have been responsible - > I have no surge protector on this supply.) > > It seems to me that it should be possible > to have a simple, torch-battery operated, system > which will keep the machine alive long enough > to make a graceful exit. > A full-blown UPS would be excessive, I think, > as I only want the machine to re-boot > when the current comes back on. > > I know there is a Remote Management (iLO) card > for this machine, which might be useful for this. > Unfortunately, I've already used the PCIe slot > for a second ethernet card. > > Any advice or suggestions gratefully received. > > -- > Timothy Murphy > e-mail: gayleard /at/ eircom.net > tel: +353-86-2336090, +353-1-2842366 > s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland > > _______________________________________________ > A UPS would be your simplest option here since the UPS can send a signal to the OS to shutdown properly. Using a "torch battery" (I presume this is a large torch?) you'll still have the same issue as you have now - when the battery runs flat (i.e. power outage is longer than 10 minutes or so) Linux will still crash uncleanly. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532