Craig Ringer wrote:
> PostgreSQL has to trust the hardware and the OS to do their jobs. If the
> OS is, unbeknownst to PostgreSQL, flipping the high bit in any byte
Might not even be the OS - it could be the stars (through cosmic rays).
http://www.eetimes.com/news/98/1012news/ibm.html
'"This clearly indicates that because of cosmic rays,
for every 256 Mbytes of memory, you'll get one soft
error a month," said Tim Dell, senior design
engineer for IBM Microelectronics. '
> The RAID controller might be "helpfully" "fixing" parity errors
> in a RAID 5 volume using garbage being returned by a failing disk
> during periodic RAID scrubbing.
If your raid controller doesn't have ECC memory, and if IBM's
right about those soft error stats, it might be doing more
harm than good.
