3,2,1 rule using DrivePool and CloudDrive in General Posted November 5, 2015 Also please be aware that this stragegy alone does not protect you against an unnoticed accidental deletion or corruption of files (either from user error, malware, software bug etc). Any deletion or corruption will be propogated to all 3 copies virtually instantly. I'm designing a strategy at the moment and am trying to take this into account. I'm thinking it is better to have a backup process using backup software that can restore state to a given time. Back this up to a local drive (either in the pool or seperate) and then mirror it offsite. I'm thinking of using Backup For Workgroups for this as it has the mirroring built in. Oh yeah, not a problem. Thanks for looking out though. Local shadow copies, differential backups, offline copies, etc... It's all good. So, I might be misunderstanding what you are attempting to do but from what it sounds like, I was under the impression I had done this exact thing (except 4,3,1 if you will). In drivepool, I selected the desired folders to be duplicated 4 times under file protection. Then under Balancing > File Placement I selected those folders to be placed on 3 local drives and 1 cloud drive by selecting the drives in the "file placement options" section. Now I was under the impression that this would result in one copy of the folders being placed on each of the four designated drives. After balancing, when I look at the folders it shows them being duplicated across the four drives (4,3,1) but from reading your question and the subsequent responses am I to understand that the 4 copies of the folder are not duplicated across the 4 drives? Or was it that you were attempting to specifically use a balancer to accomplish this? As Drashna stated earlier, this is an option but depending on your configuration it may cause the pool condition to be "unhealthy" as it's violating the rules/balancing options for the other drives. So, as a workaround, I kicked around the idea of doing differential backups to the cloud, using CloudDrive. Unfortunately, the latest version is on shaky 'experimental' ground with Amazon. Hopefully this gets sorted out soon. Oh, and FYI; I was thinking about using my license of Acronis for differentials (since I already had a license). For some reason, it'll only let me get a sector-level backup of my DrivePool, NOT differential. Nuts! :/ So that means using Acronis for diff backups is out.... and so is Amazon.... Double Nuts.... this is turning into a pair of fat nuts. Ah well, it's still BETA. All in due time.