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My desired backup system, please advise if it's doable and critiques welcome.

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Hello backup/peace-of-mind friends!

I am going through some computer change ups and updating my backup system.

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Setup:

Drives
System Drive (1tb) - system drive with files
External Drive (2tb) - storage of files only (less than 1tb of files)
External Backup Drive 1 (2tb)
External Backup Drive 2 (2tb)
External Backup Drive 3 (2tb)

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What I would like to do:

Partition ALL external drives (including my main storage one) in half and use each for storage. The 2tb external drive will have 1tb of usable storage, and the other will be a backup partition for my main drive. The other three external drives will then be backup destinations for each of my two main drives (system and storage). In the end, each external backup drive will have a backup of my main and external drive in their respective 1tb partitions, and the storage drive will also have a 1tb partition with the system drive as well.

In other words (physical drives are separated by blank spaces for clarity):

System Drive (1tb) - system drive with files

External Drive partition 1 (1tb) - storage of files only 
External Drive partition 2 (1tb) - backup of System Drive

External Backup Drive 1 partition 1(1tb) - backup of System Drive
External Backup Drive 1 partition 2(1tb) - backup of External Drive partition 1

External Backup Drive 2 partition 1(1tb) - backup of System Drive
External Backup Drive 2 partition 2(1tb) - backup of External Drive partition 1

External Backup Drive 3 partition 1(1tb) - backup of System Drive
External Backup Drive 3 partition 2(1tb) - backup of External Drive partition 1

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A few questions:

-What would be the best file system seeing as the backup space per backup destination is identical to the space of the source? I previously used disk cloning that only backed up any differences, so i was used to identical space in source/destination to being ok. From my research, it seems that Single-file backup format (always incremental backup) is the best solution for me.

-Would my backups be "one to all at the same time" (i.e acronis backs up my system drive to all backup destinations at the same time), or "daisy chained" (i.e. acronis backs up to one drive, and then that backup is backed up to the other drive, etc), or one at a time (i.e. acronis backs up to one, then the next, and so on)?

-I read online that you want double the space on a backup destination so that a new backup can be created alongside the previous one as a safegaurd. In case something happens to the current backup, you then have another backup. What would be the best way to go about this assurance in my proposed setup? Can acronis detect when one backup is done and validated before overriding the, likely, single backup in another destination?

Thank you!

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Hello Gianmarco!

I don't really see the point of partitioning your external storage to store your System disk backup and storage file volume backup on separate partition. If you really want to store them separately just put them in separate folders on your external backup drive 1-3.

1

File system could be NTFS, so you are not limited by 4GB size, especially if you plan to do single file backup.

If you are not doing a sector by sector backup the backup will only include actually used space, there need not be a match between the size of source disk and backup destination. Single file vs full + incrementals on some schedule is mostly a matter of preference. I personally like to have some full backups every now and then.

2

The agent is only working on one operation at same time. It would be daisy chained as you call it.

3

Single file has nothing to do with overriding as you think. It's more like storage expressed as a single file. It's more like appending new incrementals to it, and reusing space left behind by older incrementals when they are scheduled for cleanup. If I remember right it also has some internal deduplication features so it doesn't store data blocks twice.

You can enable validation for newly created backups to detect whether everything is in order.

You are already planning to have multiple copies of your backups, if the single file chain is screwed you still have the others on your other drive. Alternatively you can do full + incrementals to limit the effect of a broken backup chain. 

I'm not seeing the value of a 3rd and 4th copy of backups. Unless you plan to store them at a separate location than the rest, in which case you implemented the practice of 3-2-1 backups.

You'll have some difference in your copies though because of the elapsed time between two backups. In Cyber Backup this would be solved by replication plan, but apparently True image can only replicate to cloud not to local drives. Cloud option would basicly replace the need of a 3rd drive a mentioned a paragraph above.

Ultimately though it's up to you how critical is your data and how much space and redundancy are you willing to introduce to secure it.

-- Peter

Thanks for the response!

I just prefer the method of selecting entire "drives" to backup. As I want my external storage to be limited to 1tb, I partition it in half and use the other partition as the destination drive for my main system backup. In the min external drive i use for storage it makes more sense to me, as I dont want to have an entire backup lingering with the external storage files.

But i can see why partitioning would not be necesarry for the 3 external drives dedicated to backups. So long as I have space, I can back up both there in each drive (which should be the case, as each are limited to 1tb in available size).

 

For your response to number 1, i was referring to this: https://kb.acronis.com/content/1536#:~:text=Single%2Dfile%20backup%20fo….