Hello, I'm going to create a RAID6 (6+2) array with 12TB HDDs Seagate IronWolf. My system is installed on a SSD Samsung 970 EVO Plus NVMe with a capacity of 250GB. According to the spec [1], the SSD has a write endurance of 150TB and as there is free capacity on the device, I plan to create a new partition and to place the write journal of the RAID array on it. About the usage of the array, it will be used to store video and audio files for long term storage, the I/Os will be mainly sequential and quite large (MB or hundreds of KB) and I will be the only user accessing to the array. No virtual machines, databases, etc. The file system will be ext4. The man page says "The journal device should be an SSD with a reasonable lifetime." I think to be good on the lifetime for my use case. But I do not know what is the required capacity for the journal. Can someone give me some clues about this ? All the config files of the system will be backed up so I will be able to reinstall it easly (and re-assemble the RAID array) but the journal can not be backed up. So in case of failure of the journal (bad sectors on the SSD or complete SSD failure), what are the risks on the integrity of the RAID Array ? [1] https://www.samsung.com/us/computing/memory-storage/solid-state-drives/ssd-970-evo-plus-nvme-m-2-250gb-mz-v7s250b-am/#specs Thanks for your guidance.
