I'm currently running RAID-5 on my Synology NAS without any problems, I've been running RAID-5 on servers for 20 years and luckily never had a RAID failure (Other than those caused by human error). However I'm about to upgrade from my 4 bay NAS to an 8 Bay one and I'm starting to think I should now go to Raid-6. What are peoples thoughts? I know Raid 6 will give me 2 disk redundancy, but is it worth the extra loss in space over adding in an additional RAID 5 disk? There are always worries about a corrupt RAID volume, and as drives get larger this risk increases, but if I'm currently running monthly RAID scrubbing on the array I'm hopefully mitigating this issue. Any comments welcome.