I wanted to share what I do for backups for other out there wondering about bit rot or even how to backup…
Sense I can remember I have used FreeNAS for my file storage (Even before they moved to ZFS). I have always been a fan of ZFS data recovery…
Unlike RAID 5 and the Likes, ZFS can detect corrupted data and correct it via its checksum.
In top of this I also setup snapshots to be able to recover data in any situation.
I also take advantage of the docker images available on FreeNAS 10, So I use syncthing to replicated data one way.
I Keep my master copy on my NAS and let it replicate to my SSD on my Music Server.
Re-Ripping over 200 CD’s is not fun so I intend to take precautions to avoid this procedure at all cost
Not to long ago I deleted my master copy on my nas and the del replicated down to my Music Server, That was not fun!
My first reaction was to go back to my last snapshot of the day and revert
My data is back! phhheww!
My FreeNAS Server consists of 4 4TB Hitachi HGST Drives (Before WD bought them) For my vdev and Two Intel S3700 (With capacitors) for my Zil on RAID 1. I also use another two Intel S3700 on RAID1 for my docker pool.
I use Z2 for my vdev , RAIDZ2 allows you to have more redundancy with the cost of loosing two drives for redundancy… Yes I loose half of my drives but I sleep well at night
I use 32GB of ECC RAM, ECC RAM is very important on a ZFS file system because it uses memory to store checksum data, If anything goes bad inside your memory and you dont have ECC… Kiss your data good bye…
Hope to see what others do for data redundancy/back-up’s!
Open to any questions and or comments!