I buy about 4-5 WD harddisk a year and i noticed that weird Oxidization on harddisk PCB in recent years.
below is one on the example:
The copper is Oxidizing to Golden color, blue and gray-dish blue just on new unopened drive still in the plastic bag with silcia gel packet.
And for my new WD1001FALS-00E3A0 after i remove the Oxidization with a rubber and the Oxidization will come back in less then 2 weeks in gray-dish blue and lightly powdered that can be wipe with a dry tissue paper. (happened to ALL of my WD1001FALS and WD6400AAKS harddrives! i fear of mass HDD extinction!)
I have also posted the question in other forms with links to similar topic like tomshardware some time ago. but only get less response.
and i see similair corrosion/discolorations on the paper below
so my concern is, will this affect the reliability of the harddisk? (like the harddisk will die off in 2+ years due to PCB corrosion)
is there anything i can do to preventing the corrosion? (other then putting the slicia gel packs in the computer case.)
And some notes:
I have few 160~200 GB WD hdd running for 4.8 years recorded in SMART and they are still performing well but with some reallocated sectors due to bad motherboard chipset (i put a cooling fan on the old Nforce1 southbridge and later found out that it is affecting the south bridge with EMI and damaging the data). So far with my WD drive test for ALL of the WD harddisk i processes, only one uncorrectable sector was found and 1 old song file affected after running for 4.5 years recorded in SMART plus one dead 250GB drive due to heavy corroded PCB due to heavy humid and overheated environment after using 3+ years. and older 200GB and below harddisk i own does not have the PCB Oxidization problem on visual inspection.
oh yeah, i own 3 seagate drive and 3 of them already out after the second year even after i RMA it and returned (lasts only 2 months after RMA).