Issues with No Super block after growing RAID array after reboot #boot #2204 #uefi #fstab #raid5
#raid5
【RAID5が故障した時のデータ復旧】
RAIDが壊れてしまった時に修復してデータを救出する手順についての解説ページです。 #RAID5 #RAID #レイド
https://datahukugen.com/raid5hukkyu/
What is Erasure Coding – A Shield Against Data Loss
Erasure Coding (erasure code) is a data protection mechanism that protects against data loss by breaking data items, such as files, into fragments, calculating additional data pieces (parity information), and storing them across a set of independent locations or storage media. For decades, traditional methods like replication have been the go-to solution for protecting against data loss or corruption. In recent years, however, a more efficient and resource-friendly technique has become more […]https://www.simplyblock.io/blog/what-is-erasure-coding-a-shield-against-data-loss/
@madeindex I did have a #fedora box but over a year and a half ago I made a terrible mistake at stupid o'clock. One disk had a SMART error (bad sector) so I replaced it .. but then I thought to self: why not make /boot #raid5 like the others (server is #raid6 and #raid1)? I was not thinking ... /boot was messed up. Couldn't salvage it. And I haven't been bothered enough to repair it. #anaconda is pathetic with md+lvm and I have the laptop so not worth it to me for now.
Synology 群暉 DS918+ RAID5 專業資料救援成功案例
客戶設備：Synology 群暉 DS918+ 四 Bay NAS
硬碟配置：Seagate 4TB IronWolf NAS 硬碟 x 4 顆組成 RAID5
檔案系統：btrfs
故障原因：HDD 1 出現壞軌，客戶誤操作導致 RAID 陣列損毀
故障經過
客戶因為 NAS 出現警報，DSM 系統顯示 HDD 1 硬碟出現壞軌警告。客戶擔心資料安全，將 HDD 1 取出嘗試使用 Windows 系統進行修復。
不幸的是，在處理過程中客戶不小心將 HDD 1 與 HDD 4 混淆，並對其中一顆硬碟執行了 diskpart 清除動作，導致重要的 RAID 資訊被破壞。
當硬碟重新接回 Synology DS918+ 後，NAS 系統無法正常識別 RAID5 陣列，所有重要資料都無法存取。
https://2025.data-recover.com.tw/cases/synology-ds918-raid5-seagate-4tb-ironwolf-nas-btrfs-%E8%B3%87%E6%96%99%E6%95%91%E6%8F%B4
#群暉 #NAS #RAID5 #資料救援 #客戶案例 #Datarecover #磁碟陣列恢復
"Tôi dùng Beelink Mini PC + Proxmox/Docker lưu trữ truyền hình 6 tháng. Dứt địa 2 500GB NVMe. Mình cần gia luas cho data/videos. Đang cân bằng giữa Ugreen & UNAS 4 (RAID5). Cảnh Time truy cập Jellyfin xa qua Tailscale. Có kinh nghiệm nào về chất lượng stream với多人 1080p? `#NAS #Selfhosted #Jellyfin #Tailscale #UNAS #RAID5 #Backup #Tech`"
https://www.reddit.com/r/selfhosted/comments/1o84ixp/need_some_nas_suggestionsinformation/
I had to decide -- more burn-in to check for early errors or just build the array and let it detect them? So I fired up mdadm to create my #RAID5 array and that took literally all day. Oh and today too. But its done now and I downloaded 15 GiB from one and 17 GiB from the other event off my main camera.
I can finally fire up #darktable and start culling and processing pictures.
Dear fellow photo #geeks, its not just you. It happens to all of us.
Also please be patient, I'll post #photos soon!
Random update that hits both my #photog and #sysadmin roles; I ran out of disk space for my raw #photography recently. I have a home-made #NAS box with a pair of disks in #RAID1 running Rocky Linux and I needed to get more space. I spent an evening shopping around for the best value I could get in local disks and that required driving to three Canada Computers locations to pick up one drive at each so I could build a #RAID5 array and not deal with this again in the near future. [ continues ]
Всё про age в Linux
Привет, Хабр! Сегодня мы рассмотрим age — современный инструмент файлового шифрования, который за последние пару лет стал твёрдым фаворитом всех, кому надо быстро и надёжно прятать данные.
https://habr.com/ru/companies/otus/articles/933028/
#linux #age #шифрование_данных #MySQL #резервное_копирование #RAID5 #секретные_ключи #X25519
1/2
@_RyekDarkener_ If you want to push #LLM to their limits, here is a prompt about my #BTRFS #RAID5 file server.
All the description is true. I did not expect any useful answer from any LLM. This was inspired by a crazy page that I saw on Reddit
https://www.reddit.com/r/btrfs/comments/1irpwpj/speeding_up_btrfs_metadata_storage_with_an_ssd/
https://usercomp.com/news/1380103/btrfs-metadata-acceleration-with-ssd
Woooo hooo I am at 78.5% done with the 36 Tb (48Tb total) #raid5 array! That’s like gonna take “415.4” minutes to finish 😅
Due to some driver issues that I just don’t want to deal with, I have switched from the well loved #Debian to the more (corporate) supported #Ubuntu for the #DIY media server.
All the needed drivers we easily installed on Ubuntu. Currently I am in the process of setting up #raid5. Once that is done then I will install #Jellyfin
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:
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.
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.
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
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