To change the hosting account tariff, do the following:
You can view the history of changes to the hosting account tariff in the section “Hosting → Change history»:
When the tariff is changed, the following notification may be displayed: It means that the tariff currently in use is archival... Since tariff change is possible only for any of the current tariffs, it will be impossible to return from the current one to the archived tariff... In this situation, it is worth comparing the key characteristics (number of sites, amount of disk space, inode limit, parameter value memory_limit) current archive tariff with the current tariffs and only after that make the final decision.
No, all shared hosting hosting accounts have been working on servers with SSD for a long time, regardless of whether there is a mention of SSD in the tariff name or not.
Yes, the IP address can change: