Akeeba Solo


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Environment Information

PHP version
Akeeba Solo version

Latest post by CORBISER on Thursday, 05 March 2020 04:33 CST

Good morning...
About the size of backup files : what is better for the backup process, (uploadong to Dropbox) ???
Only one file of 2 Gb. or 10 of 200 Mb... or 4 of 500 Mb... ???

I test with these options , and always are running good, but I would like to know your opinion...


Akeeba Staff

as usual, the answer is "it depends".
In theory, there should be no issues as long as your server bandwidth can process the archives in reasonable time. However, as rule of thumb, I'd suggest to stick to 300-500Mb at maximum. Going after that, you could incur in some limits imposed by hosting companies. For example, some hosts will kill the process if it's creating too large files, if you get past 2Gb you'll get into PHP "dangerous" area. Recent versions of PHP are usually compiled under 64-bit architecture, but if you get an older version, it could be compiled for 32-bit.
This means that there's an hard limit on how an integer number can grow. Akeeba Backup will force the creation of a new backup archive once it's reaching such limit, but in some cases the PHP process can start acting weird while handling such large numbers, so it's better to avoid that.

Finally, the same applies to your bandwidth. Maybe right now it's fast enough to process 2Gb in one shot, but in the future your server could get more sites and the transfer speed could drop, resulting in timeouts during the upload.

So I'd suggest to stick with a part size of 500Mb , it will lower the chances you'll have to tweak your configuration in the future.

Davide Tampellini

Developer and Support Staff

🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!

Hello Davide.
Thanks for your answer, I will configure in parts of size 500 Mb.
now is also running ok with a unique file of 2 Gb, but as you said, in the future..... who knows !


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