It all depends on used technology. DRAM/SRAM really have problems with cosmic rays, but on LEO enough to use ECC, as DRAM refresh it's contents every few milli

It all depends on used technology. DRAM/SRAM really have problems with cosmic rays, but on LEO enough to use ECC, as DRAM refresh it's contents every few milliseconds. In Deep space missions (on Mars and beyond), even hardened electronics hangs, as I could remember, approximately every year. Magnetic-core memory is not affected by cosmic rays (only support circuits affected), but unfortunately it is not dense enough for current storage demands (exists micro-electronics magnetic-core technology, but even it cannot compete with CMOS). Unfortunately, ECC notebook (mobile) platforms are not produced anymore (yes, tens years ago exists Sun notebooks, built on server platform, but they not produced for long time), and on ISS used off-the-shelf technologies, that's why they have troubles with cosmic rays. Because of this, Shuttle flight control computers was special radiation hardened but with DRAM. Magnetic-core storage is just don't used in modern spacecrafts, but used radiation hardened CMOS and for storage used cylindrical magnetic domains technology (you could buy it on free market easy, but it is still magnitudes less dense than single layer flash). PS to be strict, Shuttle flight computers was upgraded at least once, but from beginning was hardened semiconductor.