You can always go RAID6 for the extra layer of security without the full cost of RAID10. I looked at HGST and Seagate and their URE rates are listed as 10^15 also. I believe the commercial vendors (NetApp, EMC, etc) are OK with those specs.
Hi kanewolf, thanks for looking into Seagate and HGST options, it is greatly appreciated. RAID6 is awesome sauce but not an option for me. 2.
Trying not to bore anybody with the details of what I am trying to do here but essentially ...cant do RAID6 internally (On my Mac Pro 5.1 with 4 internal drive bays) because I'm not using a Raid card, I'm using SoftRaid
which does not support RAID6. My two external boxes
will give me RAID options via a hardware switch, but those options are JBOD, RAID0, 1, 5, 10. One external Box for incremental hourly backups. The second external box I will update once per week and keep offsite for theft or fire insurance. Not building a data center NAS. I run a Retouching-CGI-Animation business from one workstation, and have 15 years worth of archives, and several TBs of current work at any given moment.
Thanks again for your assistance