All Questions
15 questions
0
votes
0
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101
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Added wrong drive to raid1 via mdadm, partition recovery
My raid is functioning fine, but I accidentally added a USB drive to what is a sata RAID1 with mdadm.
I noticed this pretty quickly and removed the drive from raid, it was synced about half a percent. ...
0
votes
1
answer
2k
views
Unable to rebuild the Raid 1 Array (intel RST Raid 1) in BIOS and in OS(Ubuntu server 20.04.4)
we have HP server HP ProLiant ML10 Gen 9 with Ubuntu 20.04.4 LTS. We have enabled Raid 1 array for two HDD sized 2TB using Intel RST Raid configuration (which is an fake/firmware raid). Now my goal is ...
- 31
0
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0
answers
104
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Single-disk array full: how to add a spare disk without losing data?
So I rent this server from Hetzner and it was labeled as 2x512gb nvme ssd. Indeed, the server contains two 512 gb nvme ssd but (my fault) I noticed only later that they were in some sort of software ...
- 105
2
votes
1
answer
2k
views
Does IDs from `ls -l /dev/disk/by-id` output are unique to a disk? - DELL PERC card
Does output from ls -l /dev/disk/by-id can be used as a universal disk identifier?
I am currently trying to find a unique identifier that I can use to create a ZFS raidz pool using a unique identifier ...
1
vote
2
answers
2k
views
How does OS read disks that were formatted as 520?
The question is about disks that were formatted as 520 or 528 bytes rather than 512 bytes. How does the operating system read data if I cannot access to those disks via hexedit/cat or any viewer?
Is ...
- 171
2
votes
1
answer
2k
views
Do I need to replace my NVME SSD?
I have a simple server setup:
2 NVME SSD disks (both SAMSUNG MZVLB1T0HALR-00000 for 1TB) united into RAID0.
OS Ubuntu 19.04
Today my system stopped responding. Reboot didn't help.
I connected via KVM ...
- 121
0
votes
1
answer
461
views
Can I configure RAID 1 with production server running?
I am facing issue configuring RAID 1 with currently running production server (Ubuntu 18.04 LTS).
Currently my configuration is
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 1M 0 part
└─...
- 5
1
vote
0
answers
3k
views
How to re-add removed drive to raid 1 mdadm array on another machine?
I recently was having trouble with a server randomly shutting down. I figured it was signs of disk failure, so I went about removing and swapping a drive from the raid 1 mdadm array.
There were two ...
- 11
0
votes
0
answers
657
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Replace failed disk in RAID 1
two days ago one of my two drives in my software RAID 1 (that was setup using gnome-disks) configuration failed. I could not access the files in the meantime. After short research it seems that I have ...
- 338
0
votes
1
answer
1k
views
mdadm reports faulty disk, but smart doesn't find problems
I've got a 9 disk raid 5 array.
Today i got a mail from my server:
This is an automatically generated mail message from mdadm
running on Eldorado
A Fail event had been detected on md device /dev/...
- 201
1
vote
0
answers
583
views
Resize a RAID 5 Partition
I'm moving my VG to a RAID, i have 3 disk 600GB, the VG is in the partition /dev/sdc2
/dev/sdc1 1G type linux <-- Boot partition
/dev/sdc2 599G type Linux LVM
One disk have the VG and with the ...
- 178
1
vote
2
answers
995
views
What should the total space be for 4 3TB Drives in RAID10 configuration?
I just configured 4 3TB drives in a RAID-10 configuration but the total disk space in the RAID is 4TB. I used the following guide to setup the RAID-10, RAID-10 Intall. Shouldn't the size if the RAID-...
- 447
5
votes
3
answers
22k
views
How do you check the health of individual hard drives in a RAID array?
I'm running a simple 1 TB RAID 1 array with mdadm on Ubuntu Server 10.10. I would like to simply check the status of each hard drive to make sure their both functional before it is too late. How ...
- 191
0
votes
2
answers
619
views
Ubuntu raid 1 write errors
I have an Ubuntu server set up with two SATA drives in a RAID 1 configuration with MDADM. The machine is used to record raw video, which involves a lot of writing to the disk. Sometimes during video ...
- 1
0
votes
1
answer
156
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Adding another HardDisk to my server
I have a ubuntu server and I am planning to add another harddisk to it.
Currently installed harddisk is iSCSI drive and I can add new SATA2 harddisk using NAS or SAS.
I lack knowledge of linux in ...
- 683