add hetzner storage box article

input/blog/2022/2022_05_16_borg_backup.md

 </pre>
 
 I can now simply plug in a backup disk and run "mount-backup && backup-extern" to run a new backup.
+
+I'm also [using these scripts for Cloud backups](2022_06_06_hetzner_storage_box.html).

input/blog/2022/2022_06_06_hetzner_storage_box.md

+title: Blog
+post: BorgBackup in the Cloud
+description: Using the Hetzner Storage Box
+date: 2022-06-06
+comments: true
+---
+
+To back up [my NAS](nas_2018.html#06_2022) I was shopping around for different cloud storage providers that I could use with [BorgBackup](https://www.borgbackup.org/).
+
+Here are some yearly prices, calculated for a storage requirement of ~22TB (22.000GB).
+
+<table style="text-align: right;"><tr>
+<th><div>Name</div></th>
+<th><div>Fixed Price / y</div></th>
+<th><div>Free GB</div></th>
+<th><div>Cost add. GB / y</div></th>
+<th><div>Cost / y</div></th>
+</tr><tr>
+<th><div>Borgbase Small</div></th>
+<td><div>24</div></td>
+<td><div>100</div></td>
+<td><div>1,2</div></td>
+<td><div>26304</div></td>
+</tr><tr>
+<th><div>Borgbase Medium</div></th>
+<td><div>80</div></td>
+<td><div>1000</div></td>
+<td><div>0,084</div></td>
+<td><div>1844</div></td>
+</tr><tr>
+<th><div>Borgbase Large</div></th>
+<td><div>150</div></td>
+<td><div>2000</div></td>
+<td><div>0,06</div></td>
+<td><div>1350</div></td>
+</tr><tr>
+<th><div>rsync.net &lt;1TB</div></th>
+<td><div>0</div></td>
+<td><div>0</div></td>
+<td><div>0,18</div></td>
+<td><div>3960</div></td>
+</tr><tr>
+<th><div>rsync.net &lt;100TB</div></th>
+<td><div>0</div></td>
+<td><div>0</div></td>
+<td><div>0,096</div></td>
+<td><div>2112</div></td>
+</tr><tr>
+<th><div>rsync.net &gt;100TB</div></th>
+<td><div>0</div></td>
+<td><div>0</div></td>
+<td><div>0,06</div></td>
+<td><div>1320</div></td>
+</tr><tr>
+<th><div>Wasabi Storage</div></th>
+<td><div>0</div></td>
+<td><div>0</div></td>
+<td><div>0,0708</div></td>
+<td><div>1557,6</div></td>
+</tr><tr>
+<th><div>Google Storage Std</div></th>
+<td><div>0</div></td>
+<td><div>0</div></td>
+<td><div>0,276</div></td>
+<td><div>6072</div></td>
+</tr><tr>
+<th><div>Google Storage NL</div></th>
+<td><div>0</div></td>
+<td><div>0</div></td>
+<td><div>0,12</div></td>
+<td><div>2640</div></td>
+</tr><tr>
+<th></th>
+<td></td>
+<td></td>
+<td></td>
+<td></td>
+</tr><tr>
+<th><div>Hetzner 20TB Storage</div></th>
+<td><div>526,92</div></td>
+<td><div>0</div></td>
+<td><div>0,026346</div></td>
+<td><div>526,92</div></td>
+</tr></table>
+
+As you can tell, most providers I looked at are actually pretty expensive.
+One reason for this are their guarantees against data-loss.
+
+One of the rows in the table above is not like the others, and that is the [Hetzner Storage Box](https://www.hetzner.com/storage/storage-box).
+These do not provide a dynamically growing storage, like the others.
+Instead you get a fixed amount of memory, depending on the amount of money you pay.
+The largest available size is 20TB, which is less than the 22TB I calculated with.
+But in reality I only need ~16TB currently for backups.
+
+Because this is only used as an offsite backup for me, I decided to go with it for it's far lower price, because I can live with the possibility of losing data when their [DC burns down](https://en.wikipedia.org/wiki/OVHcloud#Incidents) or something 🚒 🧑‍🚒
+
+Ordering a new storage box instance is straight-forward.
+You get a username, DNS name and auto-generated password in the Hetzner Web UI.
+In there you can also enable different access methods; we need SSH for Borg.
+
+Setting up [SSH authentication](https://docs.hetzner.com/robot/storage-box/backup-space-ssh-keys) and [using Borg](https://community.hetzner.com/tutorials/install-and-configure-borgbackup) are described in the [Hetzner docs](https://docs.hetzner.com/robot/storage-box/).
+
+The workflow is a bit strange, I have to admit.
+While you can use Borg or rsync over SSH with the storage box, interactive logins are not possible and you can also not use `ssh-copy-id`.
+Instead, commands need to be executed via sftp.
+These are the steps I had to do to enable public-key authentication and initialize a borg repo.
+
+<pre class="sh_sh">
+cat .ssh/KEY.pub >> storagebox
+echo -e "mkdir .ssh \n chmod 700 .ssh \n put storagebox .ssh/authorized_keys \n chmod 600 .ssh/authorized_keys" | sftp USER@USER.your-storagebox.de
+rm storagebox
+echo -e "mkdir backups \n mkdir backups/NAME" | sftp USER@USER.your-storagebox.de
+BORG_RSH='ssh -i /home/USER/.ssh/KEY' borg init --encryption=repokey ssh://USER@USER.your-storagebox.de:23/./backups/NAME
+BORG_RSH='ssh -i /home/USER/.ssh/KEY' borg key export ssh://USER@USER.your-storagebox.de:23/./backups/NAME keyfile
+mv keyfile SOMEWHERE_SAFE
+</pre>
+
+Then I simply adapted my [existing backup scripts](2022_05_16_borg_backup.html) to add a BORG_RSH export.
+
+<pre class="sh_sh">
+#!/bin/sh
+
+export BORG_REPO=ssh://USER@USER.your-storagebox.de:23/./backups/NAME
+export BORG_PASSPHRASE='PASSWORD'
+export BORG_RSH='ssh -i /home/USER/.ssh/KEY'
+
+export BACKUP_PATH=/PATH_TO_BACKUP
+export BACKUP_EXCLUDES="      \
+    --exclude=/EXCLUDED_PATHS \
+"
+
+backup-borg
+
+backup_exit=$?
+exit ${backup_exit}
+</pre>

input/projects/nas_2018.md

 But if anyone has suggestions, I'm open to try it again!
 
 ## Four-Year Update (June 2022)
+<a class="anchor" name="06_2022"></a>
 
 Recently I was greeted by this log message in the TrueNAS web UI.
 
 %-->
 
 Unfortunately hard disk prices are still high and I'm currently not able to afford two new drives.
-So for now I'm making sure I have a working backup and hope for the best 😅
+So for now I'm making sure I have a [working backup](2022_06_06_hetzner_storage_box.html) and hope for the best 😅