diff --git a/docs_luks_notes.txt b/docs_luks_notes.txt
new file mode 100644
index 0000000..0db1289
--- /dev/null
+++ b/docs_luks_notes.txt
@@ -0,0 +1,57 @@
+# cryptsetup -v -c aes-xts-plain64 -h sha512 -s 512 luksFormat /dev/sdc /etc/cryptkey
+# cryptsetup -v -c aes-xts-plain64 -h sha512 -s 512 luksFormat /dev/sde /etc/cryptkey
+
+cryptsetup -v -c aes-xts-plain64 -h sha512 -s 512 luksFormat /dev/sdc -
+cryptsetup -v -c aes-xts-plain64 -h sha512 -s 512 luksFormat /dev/sde -
+
+cryptsetup luksHeaderBackup --header-backup-file ~/sde.header.bak /dev/sde
+cryptsetup luksHeaderBackup --header-backup-file ~/sdc.header.bak /dev/sdc
+
+/etc/crypttab
+doc1 UUID=dcfc1a1e-7920-43e4-a55a-e841fb23a389 /etc/cryptkey luks,noearly #,discard (for SSDs)
+doc2 UUID=8445e3f9-4c73-4726-966b-1b8ec8fa9675 /etc/cryptkey luks,noearly #,discard (for SSDs)
+
+/dev/sde: UUID="cf6bafca-b225-46ca-8dfc-b82fb6ab5560" TYPE="crypto_LUKS"
+/dev/sdc: UUID="05f833fb-1c68-4453-9df5-68a454f59845" TYPE="crypto_LUKS"
+
+# cryptsetup open --key-file=/etc/cryptkey --type luks /dev/sde doc1
+# cryptsetup open --key-file=/etc/cryptkey --type luks /dev/sdc doc2
+
+cryptsetup open --type luks /dev/sde doc1
+cryptsetup open --type luks /dev/sdc doc2
+
+
+mkfs.btrfs -f -L docs -m raid1 -d raid1 /dev/mapper/doc1 /dev/mapper/doc2
+
+Label:              docs
+UUID:               2ae0eae2-bc13-4dbc-baa7-6e902847e0a6
+Node size:          16384
+Sector size:        4096
+Filesystem size:    1.82TiB
+Block group profiles:
+  Data:             RAID1             1.00GiB
+  Metadata:         RAID1             1.00GiB
+  System:           RAID1             8.00MiB
+SSD detected:       no
+Zoned device:       no
+Incompat features:  extref, skinny-metadata, no-holes, free-space-tree
+Runtime features:   free-space-tree
+Checksum:           crc32c
+Number of devices:  2
+Devices:
+   ID        SIZE  PATH
+    1   931.51GiB  /dev/mapper/doc1
+    2   931.51GiB  /dev/mapper/doc2
+
+
+
+mount -t btrfs -o defaults,noatime,compress=zstd -L docs /docs
+
+
+sudo blkid /dev/mapper/doc1
+/dev/mapper/doc1: LABEL="docs" UUID="cd4efb2f-a791-41de-8f19-65baf747c57c" UUID_SUB="c0356a61-57e8-4f1e-b9cb-7ca16c5e8c0b" BLOCK_SIZE="4096" TYPE="btrfs"
+
+
+/dev/mapper/doc1: LABEL="docs" UUID="cd4efb2f-a791-41de-8f19-65baf747c57c" UUID_SUB="c0356a61-57e8-4f1e-b9cb-7ca16c5e8c0b" BLOCK_SIZE="4096" TYPE="btrfs"
+
+/dev/mapper/doc2: LABEL="docs" UUID="cd4efb2f-a791-41de-8f19-65baf747c57c" UUID_SUB="d3266122-df77-49e6-be86-4bb6226e96df" BLOCK_SIZE="4096" TYPE="btrfs"