Je suis parti pour ajouter un #NAS #DIY à ma petite infra perso pour accueillir ces backups.

Ce sera sur une base de debian avec un SSD système auquel j'aimerai bien ajouter un #RAID5 pour les données.

Je veux un système simple à mettre ne place et robuste.

De ce que j'ai vu #openmediavault sait très bien faire ça en quelques clics. Donc il me tente pas mal.

Ensuite, je me dis que pour avoir des perfs convenables, les backups pourraient se faire comme ça:

2/X

Установка RAID5 и NFS для Ubuntu Server

В зависимости от инфраструктуры выберите способ подключения диска в систему. Я работаю на VMware Workstation. Создаем три диска по 1ГБ. Из моего опыта лучше создавать их как:

https://habr.com/ru/articles/895256/

#raid5 #nfs #ubuntu #ubuntu_server

Ok, it is going to take about 4 hours to copy 4Tb of data from my external #SSD drive to this new raid-5 drive, which consists of four 4Tb of 2.5" SSD drives.

#raid5

@Nimbius666 also I've seen some #cursed stuff with #Hardware #RAID controllers - like #ZFS on a #FreeNAS on a #RAID5.

• I was screaming and demanded to see the person who did that and force them to undo that shite, but sadly they had been fired ages ago.

What a beautiful sight! :BlobCatChefsKiss:

The drives came in and I am in the process of setting up #raid5

#NAS

The failing drive has been swapped and the NAS is now rebuilding the volume. Asustor firmware seems pretty solid, it would seem. It booted right up and automatically began rebuilding without any interaction from me.

#CosplayAsSysadmin
#RAID5

Also, glad I checked, the Asusor NAS I own does NOT support hot-swapping the drives per this article. That's fine, I don't mind powering it off later to swap the drive.

https://www.asustor.com/en/knowledge/detail/?id=6&group_id=681

#CosplayAsSysadmin
#RAID5

One of the drives in my Asustor 4-bay NAS is reporting S.M.A.R.T. errors. The drives are now two years old.

Seagate Ironwolf has a 3 year warranty so I am having a replacement overnighted for $15 which includes the return packaging and label for the failing drive.

I am very impressed with the Seagate RMA process.

When I was setting up my NAS I intentionally bought a spare drive that I can swap immediately. I will do that tonight and let the volume rebuild overnight.

#CosplayAsSysadmin
#RAID5

He wrote a similar article in 2010 about how #RAID 6 would be dead by 2019.

https://www.zdnet.com/article/why-raid-6-stops-working-in-2019/

#storage #raid5 #raid6

Come configurare in modo efficace i sistemi RAID nei NAS: I sistemi RAID (Redundant Array of Independent Disks) sono una tecnologia consolidata per l’archiviazione dati: come diverse configurazioni di RAID possono pero’...
#sistemiRAID #toshiba #unitàarchiviazione #RAID10 #RAID5 http://dlvr.it/TGLDBY

Файловая система без фокусов: как hard links и XOR сэкономят ваши гигабайты

Для начала нужно понять главное - файлов не существует. А потом на примере простых манипуляций разобрать что такое hard links, чем может быть полезен непонятный XOR и как это всё уживается в системах копирования и снимков

https://habr.com/ru/articles/855480/

#xor #raid #hard_links #windows #python #backup #raid5 #file_system

Nothing quite gets the blood pumping like discovering you unseated your #RAID5 controller while troubleshooting server issues.

Luckily, reseating corrected, but that was a scary few minutes.

#ITSupport
#sysadmin

O kurwa, dwa tygodnie? :D #raid #raid1 to #raid5

@dagaz Yo, ich nutze auch #zfs unter #Debian aber auch ein #xfs im #raid5 war mit #mdadm ziemlich leicht zu handeln...

Nearly lost the array too, good drive went 'Foreign' and took out the array. Thankfully the LSI Scan for Foreign Config works really well and it imported so I could rebuild. 🍀 :coolbeans:
#lsi #raid5

#raid5

speedtest ... has its limits 🙂

i think this is due to the used storage medium

Enclosed is also a picture of my server farm in my large data centre 😉

#raid5
#samba

I decided to switch to SAMBA, as I also have some Windows PCs in the Network.

Server :
sudo apt update
sudo apt install samba
sudo mkdir /mnt/raid5/users/marco
sudo chown marco:marco /mnt/raid5/users/marco
sudo nano /etc/samba/smb.conf
sudo service smbd restart

Client :
sudo apt update
sudo apt install samba
sudo mkdir /mnt/marco/backup
sudo nano /etc/fstab

#raid5
#nfs

I will use NFS instead of SAMBA.

https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nfs-server-using-block-storage

NFS Server:
sudo apt install nfs-kernel-server
nano /etc/exports
sudo systemctl restart nfs-kernel-server
chown nobody:nogroup /mnt/raid5/nfs -R
chmod 007 /mnt/raid5/nfs/Nextcloud/ -R

NFS Client :
sudo apt install nfs-common
sudo mount riscv:/mnt/raid5/nfs/Nextcloud /home/marco/Nextcloud
nano /etc/fstab :
riscv:/mnt/raid5/nfs/Nextcloud /home/marco/Nextcloud nfs auto,nofail,noatime,nolock,intr,tcp,actimeo=1800 0 0

#raid5
#luks

How do I auto-mount a LUKS disk at login WITHOUT unmounting it at logout?

https://askubuntu.com/questions/1407417/how-do-i-auto-mount-a-luks-disk-at-login-without-unmounting-it-at-logout

After creating and mounting the encrypted raid5 partition it is time to auto mount it at boot up.

mkdir /etc/luks-keys
openssl genrsa -out /etc/luks-keys/raid5 2048
chmod 400 /etc/luks-keys -R
cryptsetup luksAddKey /dev/md0 /etc/luks-keys/raid5

Last but not least, update /etc/crypttab and /etc/fstab properly

#raid5
#luks

Setting up raid drive as an encrypted volume is also quite easy.

The following links are in german:

https://wiki.ubuntuusers.de/LUKS/
https://wiki.ubuntuusers.de/LUKS/Partitionen_verschl%C3%BCsseln/

sudo apt-get install cryptsetup
sudo cryptsetup luksFormat -c aes-xts-plain64 -s 512 -h sha512 -y /dev/md0
sudo cryptsetup luksOpen /dev/md0 raid5
sudo mkfs.ext4 /dev/mapper/raid5
mkdir /mnt/raid5
sudo mount /dev/mapper/raid5 /mnt/raid5

todo : mount luks drive @ boot