Questions tagged [raid1]
RAID 1 or Mirrored RAID uses two or more disks that store the same data.
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RAID patrol write to force sector remap/rewrite?
So I have a HPE S100i SR Gen10 software RAID 1 device that hosts 2 SATA SSD's for a Windows boot partion. The HPE Storage Array management software looks like it found a problem on the SSD's during a ...
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Possible to start a RAID1 setup with a single drive?
Can I start a ZFS pool with a RAID1 setup using a single drive, and then add another one later?
Running Proxmox VE 7.2
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Transferring RAID1 to a new motherboard after HDD failure, and no "Superblock" found
First an OS SDD failure followed by a mobo failure, new mobo/cpu/ram later, and I have a RAID1 with a single working disk, and I am trying to get it remounted so that I can add in a new replacement ...
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Lost RAID 1 on 3ware controller. Good drive booted up with old data [closed]
Server is running Windows 2008R2. Drive failed and reported degraded, but restarted and OS loaded. The good drive is a copy from 5/2021 almost 8 months ago.
Is it possible the drive stopped copying ...
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I would like to understand RAID 1 restore
So, I have a situation here and I'd like to hear some tips about it.
I have a Windows Server 2012 R2 and I'm going to upgrade it to Windows 2019. The server has two HDD's in RAID 1.
To be on the safe ...
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Erratic SMART readings on one member of a RAID 1 array
I am managing a server that uses 2 nvme ssds on RAID 1 connectivity.
At once point I lost access to one of the 2 and got my normal raid array degraded mails from mdadm.
So I asked from the hosting ...
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Resize partitions Ubuntu 18.04 RAID 1
This is the output of fdisk -l
Disk /dev/sda: 5.5 TiB, 6001175126016 bytes, 11721045168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O ...
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Should I be worried about data integrity on my raid1 array?
I have a RAID (mirrored - 2 spinning rust hard-drives).
In the past two weeks, it happened 2 or 3 times, that the raid hasn't been displayed in KDE's Dolphin (file browser), anymore.
This was the ...
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Debian Software Raid1 boot failure after trying to change one disk
I have a server running Debian 11 with 3 HDDs, each 500gb using software RAID1.
I'm now in the process of upgrading so I have 2x1TB drives. To accomplish this I followed this guide.
The disk I removed ...
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mdadm using double disk space
My mdadm raid1 2 disks array seems to work good.
It is a 2 500GB array, shared over samba as proxmox bkup disk serving 2 nodes.
By the way, even if the size of the sum of the files is actually about ...
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Creating a RAID 1 via mdadm ends with completely filled one of drives after sync
I have a server with 2x 1TB NVMe drives and I want them to work in software RAID 1 (mdadm) as a system drive.
After creating and waiting for sync of the array I'm ending with one of the drives in ...
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Can I rebuild a failed raid 1 hdd with the same hdd that failed before?
everyone. I've made a mistake by detach one of the raid 1 hdd. And now it's a raid failure. Can I rebuild the raid with this hdd again? I've clean all the hdd trough diskpart on another pc. When i put ...
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mdadm automatically fail disk when bad sectors reach threshold
I'm currently running Ubuntu 22.04 with raid1.
Is there a way to configure mdadm to automatically fail disks with over 50 bad blocks but only when there is a spare present?
Ideally, I would like for ...
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When adding a new disk to RAID 1, why does it sync unused space?
I recently set up RAID 1 on Linux with mdadm. When adding a new HDD to RAID 1, data started to sync between my drives which is expected. I didn't expect that it started syncing the entire drive, ...
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mdadm raid1 irregular degraded without reason
My raid1 went to degrade state from time to time. Then my application crashes, because the raid is in read-only mode. After a reboot the raid is working fine again. Now I want to find out whats the ...
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Weekly RAID check affecting my system - any way to mitigate?
I recently got my webhost (Hetzner) to add a paid of 16TB SATA drives to my webserver. Currently using 2.5TB of them. They're RAID 1 mirrored.
I also have two 4TB nVME drives with 700GB currently on ...
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I moved a RAID1 disk pair to a new system. It's decided that it is RAID0
I tried to mount and the OS responded that I needed to run xfs_repair. Not knowing that the RAID1 was now seen as RAID0, I kicked it off and it's been running all day. That seemed weird as I had ...
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Is it best to have the OS on a separate virtual disk?
I have a server with 8 drive bays, and I have eight 4TB drives. Would it be best to do one RAID10 with all drives, or one RAID1 with two drives and then a RAID10 with the remaining six so that the ...
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Synology SHR Volume - Migrate from 3 disks (RAID5-ish) volume into 2 new disks (RAID1-ish)
What I have:
3 x 6TB SHR Volume with 12 TB redundant storage (1 disk recently broken)
What I want:
2 x 18TB SHR volume with 18 TB redundant storage (I'll expand the volume after the migration)
Of ...
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RAID Recommendation Request: 2x RAID5 arrays, 1 Large RAID5, RAID10?
I just ordered a new PowerEdge R650 which will be the primary server for our company. It will run HyperV with 10 - 12 virtuals on it, mostly Windows but some Ubuntu. All the standards: domain ...
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How to restore RAID1 configuration with 2 different HardDrives in CentOS-7
We have a server (HP ProLiant ML10 Gen 9) that came with Two Identical Hard disks. It was assumed that the server supports hardware RAID 1 (Mirror), and the CentOS-7 was installed in it. But later we ...
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Changing RAID1 HDDs (Dell PowerEdge R430) to another identical server
I'm new with server configuration and infrastructure.
If I have two identical servers (PowerEdge R430), one for spare without HDDs (call it S1), and another online with the HDDs (S2). If I remove the ...
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PCI NVMe mdadm RAID1 performance too slow
I know this has been discussed multiple times but I have not found any solution so far that worked so posting here hoping there is some solutions in Dec 2021…
I have a Dell R640 server with dual Xeon ...
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Adaptec 8405E RAID 1 extremely slow expansion (1% per day)
Our RAID 1 is being expanded from 4 TB to 8 TB. The GUI status looks like this:
The progress happens by about 1% per day. At the same time, the server is quite slow. This seems like an extremely slow ...
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SAS Drive Upgrade [closed]
We have a HP Proliant server with a RAID 1 disk ( 2x 146Gb 15K SAS) configuration. The logical drive is full and I would like to expand it.
I've purchased 2 x 300GB 15K SAS to replace the 146K
...
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RAID1 Recovery after Degradation
Below is the output from lsblk, mdadm and /proc/mdstat for my 2 disk Raid1 array
anand@ironman:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 ...
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How to create LVM RAID 1 with 4 disks of 2 different sizes?
I have a system with
2 x 1TB (NVMe SSDs)
2 x 2TB (SATA SSDs)
disks and would like to create a RAID 1 system using all available disks (so I have a 3TB RAID1 system at the end). Unfortunately, most ...
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Recovering a file by mounting a Synology RAID1 disk in Ubuntu (mount, mdadm, and losetup issues)
I'm working with a Synology RAID1 system and deleted a file that wasn't yet backed up. To recover the file, and since an undelete approach seems to be impossible, my idea is to mount a single RAID1 ...
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Windows-Server-2019 - Raid 1 Software - Could not convert Disk to Dynamic security enabled on Disk
I installed a fresh Windows Server 2019 on ONE of two identical Crucial CT1000MX500SSD1M.
I don't have an integrated RAID controller on my MB ASUS_H110m-A/M.2 so I wanted to try a software RAID 1, ...
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Does Software RAID-1 Double The Writes Over The Controller/Interface?
Say I have two hard drives that max at 200 MBytes/sec writes per hard drive. Now let's say both drives are in a USB enclosure that maxes at 300 MBytes/sec writes for the entire enclosure.
When ...
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Raid 1 default disk capacity is lesser than the disk sizes. Any ideas? Intel Raid Storage Technology - Raid from Bios
Here the screenshots I think they explains everything
The disks are advertised as 1 TB and the real size of the disks are 931.5 GB
I have installed windows server without raid setup for ...
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RAID1 clean, degrade
after a fire in my hosting, i finally recovered access to my Debian 9 server. I can enter in recovery mode but i can't run the server in normal (HDD) mode.
If i run /cat/mdstat i have 4 RAID 1 entries:...
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Recovering data from a single-disk raid1 array [closed]
I had an idea of a Raspberry Pi file server using multiple external disk drives in a RAID array. For starters I only had a single 1TB disk so I setup a raid1 array on that disk with the intent on ...
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Reusing a disk which was in the RAID array
My DC has added a new hard disk. It appears as md124 inactive sdc1. When I try to mount, the error is unknown filesystem type 'linux_raid_member',
I need to use this disk for backup VM. Can I just do ...
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Identify HDD failure by sound + Is it safe to run smartctl on a mounted RAID1?
Basically, I have two WD HDDs in a programmatic RAID1 (no special hardware):
$ lsscsi --verbose
[0:0:0:0] disk ATA WDC WD10EFRX-68F 0A82 /dev/sda
dir: /sys/bus/scsi/devices/0:0:0:0 [/...
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RAID1 array always degraded when rebooted after changing SATA controller
My software RAID1 arrays (/boot, /) always become degraded when restarted after adding SATA controller.
It's CentOS 7.
Here is what happening and what had been done:
I made 4-disks RAID1 arrays with ...
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How does Linux MD software RAID avoid assembling old and new devices into the same array?
On a Linux MD software RAID1 I removed a failed drive and added a new one. (All fine now.) The old drive and the new were never in the system at the same time.
Do I see that right, that adding the old ...
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RAID 1 HDD replacement with used HDD
We have an HD Proliant G8 with 2 HDDs built RAID 1. One of the HDD drive light becomes amber and iLO shows Bay 2 disk has a failure. I'd like to replace the failed drive with one pulled from other ...
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mdadm: power failure during raid1 rebuild
RAID1 array created with mdadm; array was rebuilding when there was a power failure. On coming back up, the array seems to be dead.
# cat /proc/mdstat
Personalities : [raid1]
md0 : inactive sdb1[2](S) ...
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How to expand logical volume in HP ML150 gen 9 , smart hba h240
I have replaced two hotplug 300gb sas drives with 600gb sas drives (raid 1) . The smart storage administrator have no option of increasing the logical volume to the new drives. So now i'm stuck with ...
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On Ubuntu, how do you recover data from a single disk of a raid array from another device
I have a 2 disk NAS device using RAID 1 mirroring. When disks started failing I wanted to buy bigger disks so as to upgrade the volume size. However the device couldn't handle mirroring the original ...
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Data layout on RAID-1 Array
For the sake of this question, assume a RAID-1 array of two identical drives.
RAID-1 (Mirroring) stores an identical copy of the data on both drives.
How identical is the drive layout?
Are the drives ...
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Added 4Tb HDD to Iomega IX2-200 but cannot extend the volume
I have a Iomega IX2-200 which came with 2Tb (1.8Tb usable) space.
It has two disks set up as RAID1.
I am trying to upgrade this to 4Tb disks.
So far this is the process I have followed:
Remove the ...
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How to replace Raid1 hard drives with large ones using Storcli tool
I have raid1 with 2 physical drives (SATA 3.637 TB).
I want to extend it's size with large ones without losing data.
-----------------------------------------------------------------------------
DG ...
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Recover data from broken RAID 1 drive
I need to save files from a Buffalo NAS Linkstation with two physical drives that is not working anymore (2TB each, Raid 1). Error message says:
The bad sectors in the hard drive may have reached a ...
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Very slow read/write on software raid1 with nvme device on Ubuntu focal
I have a server with Ubuntu 20.04.1 LTS with NVME ssd devices running on raid1 and the hard drive operates so slow! to open a gzip file to of 500MB to a 3.7GB takes a while.. way more then it should. ...
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MDADM RAID-1 "not large enough to join array" on identical partition tables
I have two disks with identical partition tables (sudo sfdisk -d /dev/sda | sudo sfdisk /dev/sdb) that mdadm refuses to merge as a RAID-1 array.
$ sudo mdadm --manage /dev/md0 --add /dev/sdb1
mdadm: /...
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Can I Move RAID-1 (Mirrored) Hard Drives From a Hardware Raid Controller to Software Raid?
Old server:
3ware 9650se PCIe hardware RAID controller with 2 sets of RAID-1 (4 total drives, 2 mirrored) with a 5th drive as a hot-spare.
New server:
Software RAID is the only option. Plan to run ...
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Troubleshooting frozen disk when queue is full
I have a system (centos 7.8) with k8s installed on top.
After a few days of normal operations (system load is ~30% and disk activity is around 60 iops, not saturated), the system goes to an unstable ...
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Using mdadm - RAID1 array doesn't mirror other disk
Currently I am building a nextcloud server on Ubuntu 20.04. I got one disk for the OS to run on a 320GB harddisk. And I want the data directory to be in a raid1 array, because if one drive fails we ...
