John R Pierce wrote: > On 12/05/11 12:17 AM, Rob Kampen wrote: > >> Swapped the memory between DIMM 2A and DIMM 2B - still get fault in >> row 3, channel 0 - thus did not move with the RAM?? >> Next reboot I'll try swapping 1A and 1B >> > > often an indication the problem is board/socket related rather than > memory DIMM. unless its the other pair you didn't swap. > > >> Also I have just discovered that both the OS drives sda and sdb have >> huge number of errors shown on the SMART records >> - can this relate to the memory errors?? >> - I am just really surprised to have two drives show almost identical >> number of errors at the same time, yet no apparent data errors - >> Drives are ATA ST380013AS 74.53 GB >> >> Just for safety I swapped /dev/sda with a new slightly larger drive >> did the sfdisk foo and added it to the md raid drives. >> This brand new drive immediately shows high raw read er >> > > hmmm. no, they shouldn't be remotely related. unless its something > else, like a power supply with noisy or out of spec voltage(s). > > 80GB 3.5" SATA drives? aren't those kind of old? like, ancient ? > looked up that PN, thats a Baracuda 7200.7 from circa 2003-2005. > http://www.seagate.com/support/disc/manuals/sata/cuda7200_sata_pm.pdf > > those are past their shelf date. > > Yes Christmas 2004 - never a problem until one of the md raid sets dropped out today. However I put a brand new - never used 120G drive in and it too shows these errors - something doesn't seem right Getting too tired to think straight so I'll leave it limping along until tomorrow Thanks for thoughts