# How backup file without separating?

**URL:** https://forum.duplicati.com/t/how-backup-file-without-separating/6210
**Category:** How-To
**Created:** [February 1, 2019, 11:13am UTC](https://forum.duplicati.com/t/how-backup-file-without-separating/6210 "2019-02-01T11:13:16Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![kees-z](https://forum.duplicati.com/user_avatar/forum.duplicati.com/kees-z/32/29_2.png) [@kees-z](https://forum.duplicati.com/u/kees-z)
#### Post date: [February 1, 2019, 1:31pm UTC](https://forum.duplicati.com/t/how-backup-file-without-separating/6210/2 "2019-02-01T13:31:06Z")

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Duplicati is [not a sync tool](https://duplicati.readthedocs.io/en/latest/01-introduction/#overview). Your source files will be split up in separate data blocks and packaged in ZIP or 7Z archives, to enable always-incremental backups, minimize remote storage capacity and other useful features. Read more about it [here](https://duplicati.readthedocs.io/en/latest/appendix-a-how-the-backup-process-works/).

> [@squidw](#):
>
> “remote volume size” i put 1TB

This will result in a single archive (ZIP/7Z) of max 1TB that will be uploaded to the remote location. I guess this is not what you want, restoring a small file will result in downloading one or more very large (1TB) archive files. Read [this article](https://duplicati.readthedocs.io/en/latest/appendix-c-choosing-sizes-in-duplicati/#choosing-sizes-in-duplicati) for more information.

> [@squidw](#):
>
> created many 7zip with data inside i think

Did you set the upload volume format to 7Z? This format has a couple of [known issues](https://forum.duplicati.com/t/is-7z-safe-to-use-yet/3814/2), so avoid 7Z and keep using the default ZIP format until the issues are addressed.

> [@squidw](#):
>
> What minimal of destination 7z files i will need to restore my data, as i understand not all 7z that create contain data, some of them contain hash or checksum?

You need all DBLOCK and DLIST files to restore data. DINDEX files speed up local DB (re)creation dramatically. If one or more requred files are lost, you can use the [Recoverytool](https://duplicati.readthedocs.io/en/latest/08-disaster-recovery/#recovering-by-using-the-duplicati-recovery-tool) to restore as many as possible from the remote files that you still have.  
You need to install Duplicati, or restore files using [this Python script](https://forum.duplicati.com/t/independent-restore-program/2316/2) without using Duplicati.

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