Maximum rollback configuration in SRX

I used to remember that junos by default keeps 50 configuration rollbacks by number through 0 to 49. However in a default setup when I saw that I only have up to number 5 rollback, I realized that default isn’t 50 config files. Once you set the command;

#set system max-configuration-rollbacks 49

you can keep 50 config files. If you also want to enable rescue config, following command does the job.

root@host> request system configuration rescue save