HI everyone. I have the PC built and I decided to go with a RAID5 array with 3x 1TB drives, which is more than enough for my media and some other things… I will be working on NextCloud soon but at the moment I am having some issues.
I am having so slow WiFi speeds (server location doesn’t allow for wired) - And I have read that it can be down to power management issues. Running iwconfig shows that power management for WiFi is ON - I want to turn this off.
I went to this link https://unix.stackexchange.com/questions/269661/how-to-turn-off-wireless-power-management-permanently
and the top rated answer says 
Blockquote Open this file with your favorite text editor, I use nano
here:
sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
By default there is:
[connection]
wifi.powersave = 3
Change the value to 2
. Reboot for the change to take effect.
I do not have this file. Any advice?
Another issue I am having relates to partitioning and mounting my RAID5 array. I have no experience with this using the terminal as I always used GParted GUI on Ubuntu.
In relation to the RAID array, fdisk -l returns
Disk /dev/sdc: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: HGST HTS541010A9
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdb: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: ST1000LM024 HN-M
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WD10JPVX-60J
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/md127: 1.84 TiB, 2000138797056 bytes, 3906521088 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 524288 bytes / 1048576 bytes
So md127 is the Raid array and as far as I can see there is no partitions. I want to format it to ext4, partition is using the entire 1.84TB, then mount it on boot.
///
fstab is as follows:
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/nvme0n1p2 during curtin installation
/dev/disk/by-uuid/ea59708c-33c9-46e3-9512-26907f9b1f96 / ext4 defaults 0 0
/swap.img none swap sw 0 0
///
blkid returns:
/dev/nvme0n1p2: UUID="ea59708c-33c9-46e3-9512-26907f9b1f96" TYPE="ext4" PARTUUID="a1aab89b-3b45-498d-856b-e8c46dcfb82d"
/dev/nvme1n1p1: UUID="099c889d-7157-4944-804e-b00f11821401" TYPE="crypto_LUKS" PARTUUID="e8845ae7-01"
/dev/sdc: UUID="08d2a244-f539-e653-8e62-286ad1a4b902" UUID_SUB="359dc266-90a1-e415-eecb-bb44f55193e7" LABEL="ubuntu-server:storagerust" TYPE="linux_raid_member"
/dev/sdb: UUID="08d2a244-f539-e653-8e62-286ad1a4b902" UUID_SUB="403de0cb-b4d8-36ef-da14-cedd1f37e0ca" LABEL="ubuntu-server:storagerust" TYPE="linux_raid_member"
/dev/sda: UUID="08d2a244-f539-e653-8e62-286ad1a4b902" UUID_SUB="057f3c51-1abf-199b-1b5f-14e31ff5ad02" LABEL="ubuntu-server:storagerust" TYPE="linux_raid_member"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/loop4: TYPE="squashfs"
/dev/loop5: TYPE="squashfs"
/dev/loop6: TYPE="squashfs"
/dev/loop7: TYPE="squashfs"