About the servers
The virtual machines
Both Mastodon (short-form blogs) and Writefreely (long-form blogs) servers are virtual machines (VMWare) running on my home network. Bandwidth is limited (1000/200Mbits), and I use Cloudflare Argo tunnels to expose the servers.
The virtual machines have plenty of memory (8Gb each), CPU (4 cores, 8 threads), and disk space (1Tb) to spare.
This should be fine (and faster than most Mastodon servers) for a few users. The servers are primarily for my personal use, so I will not let an excessive amount of guests fill them to capacity.
Backups
VMWare snapshots are used daily (this allows me to roll back to a previous machine state easily if something goes wrong during upgrades). Databases and server configurations are backed up daily. Every other day they are copied to another machine on my network. I make an offline copy of the backups monthly. There are no offsite backups.
This is enough for my personal data; I will give your account data the same level of protection I use for myself. If I die, become unable/unwilling to administrate the server, the house burns down, or something along those lines, you will lose your account. There is an obviously awesome solution to achieve different/better data security: host your own server!
Security
The only non-visible publically data is your e-mail address. I'll try my best (effort) to keep the servers updated and patched to the latest versions; however, I give no warranty of any kind against someone eventually getting to it.
You should use a unique password on these servers and (if supported) two-factor authentication. At the time I am writing this, Mastodon supports 2FA, Writefreely does not. It's your call to use two-factor authentication, but identity theft (of these social media accounts) is the most severe risk you are taking here.
it is essential you understand the risks as I have presented them to you. While I care about this, bad things beyond my control may happen. A terrific strategy to avoid/mitigate these risks is to delete your account or set up your own server to protect your personal data/identity.
My commitment to keep these servers running
I will keep them running for as long as I want or can do so. I do not plan to shut them down without notice, but shit happens. You will have the servers running for as long as I have them for myself. You can always run the servers yourself; if reliability and longevity are essential to you, that is the way to go.
Sometimes stuff will happen that I do not control, like electricity failing, computer components dying, etc. That's life. Again, you can achieve a different result if you host your own servers.
Being perfectly blunt: you are a guest, and the party may end at any time. There are no warranties of any kind that you will find a working server the next second after you read this.