I have a travel NAS made of small itx computer with large capacity HDD. Because I was concerned about data rotting issue, I installed NAS4Free, cut the HDD into 10 partitions and made a ZFS RaidZ1 vdev. The drive was Seagate Archive 8Tb and it died just after about 4 month. For some reason, the system was writing something on the hard drive continuously, without any stops. It had Owncloud installed, with all it's files (system and data) stored on ZFS dataset.
Now I am replacing the hard drive with WD, so my question is: how much does such a setup affect the HDD lifetime? I am sure the mechanics should wear out faster, but not sure how bad it is exactly.