Yes, 2 and 3 are automatic backups Zotero made over the last two days. (This is configurable in the hidden prefs.) 4 and 5 are from a plugin you installed, not Zotero itself.
Then... extensions.zotero.backup.interval---1440 means every 24 hours, and extensions.zotero.backup.numBackups--2 means number of backups.
Can I edit, for example, the number of backup to 5 or else? Backup after 1440 minutes means "backup after the last saving of current DB"? ------------- Even if I set interval to 1, new backups were not created.
Upgrade Storage
I don't use sync function.
In my DB folder I have some files like these:
1)zotero.sqlite 118.2 M 2017-10-19 13:24 -a--
2)zotero.sqlite.bak 118.2 M 2017-10-19 09:39 -a--
3)zotero.sqlite.1.bak 118.0 M 2017-10-18 09:19 -a--
4)zotero-item-history.sqlite.bak 128.0 k 2013-02-24 20:09 -a--
5)zotero-item-history.sqlite.1.bak 128.0 k 2013-02-24 07:25 -a--
I think my current DB is 1) zotero.sqlite.
What are 2) and 3) ? Are these older DBs?
And 4), 5)...
If I want to go back to latest DB, what do I use, 2) or 3)?
Thanks.
extensions.zotero.backup.interval---1440 means every 24 hours, and
extensions.zotero.backup.numBackups--2 means number of backups.
Can I edit, for example, the number of backup to 5 or else?
Backup after 1440 minutes means "backup after the last saving of current DB"?
-------------
Even if I set interval to 1, new backups were not created.