2.5" and 3.5" HDDs suffer demagnetization and bit rot over the years causing data corruption. For 2.5" HDDs that are stored and accessed once or twice a year, is it possible to avoid this by storing my 2.5" HDDs at a temperature of 34-36C and humidity of 58-68%?
try about a year before the disks begin to suffer
cold servers have to be powered up quarterly to be able to refresh the arrays
I don’t understand your answer, could it be more objective?
Hard disks and SSD alike both are unsuitable for archives. CDR, DVDR and BDR can last years but having spare discs and redundant error control is vital. Tape under controlled conditions can also last a long time and spare tape drives are important too.
tape LTO and drive very expensive i need media 350gb 350gb is not in dvd bluray
Depending on the amount of data that needs archiving using a NAS might be safer as these are not that demanding
I only connect my 2.5" HDDs + USB3.0 case to the PC once a year. Is that enough to avoid bit rot?
demagnetization is an inevitable phenomenon when storing the 2.5" HDD at temperatures of 34-36C?
WD NAS boxes are unreliable so look at some 4-6 disk boxes on fleabay. I suggest a spare disk so if the array degrades a fresh disk can be installed immediately.
RAID6 tolerates 2 disk failures but this is seen more with 16 disk NAS boxes
Some people say that humidity and high temperature (34-36C, 57-67%) causes demagnetization and bit rot in 2.5" HDDs, other people say that it does not and that only strong magnets cause these problems, what is the truth?
??? question
Bitrot is caused mostly by background radiation and thermal vibrations which erode the retentivity of the platters. For this reason I use duplicate copies for redundancy reasons.
7-zip is handy and I even use PAR2 redundancy to help with a faulty archive block or 3.
what procedure anual i use in my hdds 2.5"?
Some people say that humidity and high temperature (34-36C, 57-67%) causes demagnetization and bit rot in 2.5" HDDs, other people say that it does not and that only strong magnets cause these problems, what is the truth?
I found old laptops mothballed. They still booted up but the machines were in a box cold and in a low humidity room. So I use USB boxes and they also seem stable for a year in a box.
Like I said,redundancy is important.
and demagnetization?
Backup copies galore are best for long term survival
I have 4 2.5" HDD units stored and I access them once a year energize, here where I live the temperature varies from 34-36C humidity 57-67% will this high temperature and high humidity gradually cause demagnetization and bit rot in these 2.5" HDDs causing degradation of the data stored on the platters? is inevitable?
my hdds model WD10JPVX-08JC3T5 and HGST APPLE HDD HTS541010A99E662 and Seagate ST500LM030
I suggest a 5th 2.5" device and copy data from one to another so that fresh writes are made to reduce the likely chance of data loss.
USB sticks at 1TB are available but the tend to be unreliable compared to hard disks and SATA SSD products. Hard disks and SSD both should be copied every 6 months to be safest.
