View Single Post
  #93   Report Post  
Posted to uk.d-i-y
Alan J. Wylie Alan J. Wylie is offline
external usenet poster
 
Posts: 81
Default UPS server wiring no-no

Mike Tomlinson writes:

En el artÃ*culo , The Natural Philosopher
escribió:

No OS can cope with a power loss in the middle of a disk write operation.


Look up journalling filesystems. examples: ext3 and NTFS.


So long as you have barriers enabled and/or the disk's write cache
disabled. Up to 64MB of data that the O/S thinks has been flushed but
the disk hasn't yet written isn't good.

--
Alan J. Wylie http://www.wylie.me.uk/