I found a few typos :)
8<---
+ZFS dRAID
+~~~~~~~~~
+
+In a ZFS dRAID (declustered RAID) the hot spare drive(s) participate in the 
RAID.
+Their spare capacity is reservered and used for rebuilding when one drive 
fails.
typo: reservered -> reserved
+This provides depending on the configuration faster rebuilding compaired to a
Sounds a bit off to me. Maybe something like "Depending on the configuration, this provides..." would be better?
+RAIDZ in case of drive failure. More information can be found in the official
+openZFS documenation. footnote:[OpenZFS dRAID
typo: documenation -> documentation
+https://openzfs.github.io/openzfs-docs/Basic%20Concepts/dRAID%20Howto.html]
+
+NOTE: dRAID is intended for more then 10-15 disks in a dRAID. A RAIDZ
+setup should be better for a lower amount of disks in most use cases.
+
+ * `dRAID1` or `dRAID`: requires at least 2 disks, one can fail before data is
+lost
+ * `dRAID2`: requires at least 3 disks, two can fail before data is lost
+ * `dRAID3`: requires at least 4 disks, three can fail before data is lost
+
+
+Additonal information can be found on manual page:
typo: Additional
+
+----
+# man zpoolconcepts
+----
+
+spares and data
I think we consistently start headers with a capital letter, so "spares" should be "Spares"
+^^^^^^^^^^^^^^^
+The number of `spares` tells the system how many disks it should keep ready in
+case of of a disk failure. The default value is 0 `spares`. Without spares
typo: of of -> of
+rebuilding won't get any speed benefits.
+
+The number of `data` devices specifies the size of a parity group. The default
+is 8 if the number of `disks - parity - spares >= 8`. A higher number of `data`
+and parity drives increases the allocation size (e.g. for 4k sectors with
+default `data`=6 minimum allocation size is 24k) which can affect compression.
+
+
  Bootloader
  ~~~~~~~~~~



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