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Questions tagged [raid1]

RAID 1 or Mirrored RAID uses two or more disks that store the same data.

RAID Level 1 or mirrored RAID uses two or more disks that store the same data. One disk is mirrored to the other. Write speeds are the same as using one disk, and read speeds are twice as much.

RAID 1 is used when reliability needs to be higher than normal.

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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 still have the other drive with the data. So I got…
Mike milkshake
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Can we move RAID configured disks across different Servers

I have 2 SSD disks configured as RAID 1 using RAID feature in BIOS. By chance if my motherboard and processor is damaged, can I connect these 2 SSD disks to another Server. Will these SSD disks boot on another Server. If not, is there any solution…
user13727833
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Can I perform a RAID-1 Setup on Linux over an existing disk one containing data?

I have the following setup on my Fileserver: 2 HDDs In intel RST RAID-1 containing Windows OS+DATA And I want to migrate into the following configuration: 1 SSD containing CentOS 8 2 HDDS containing data only in RAID-1 configuration The RAID-1…
Dimitrios Desyllas
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Can I create a RAID-1 using Intel RTST on existing FIlesystem?

I am installing ubuntu on a fileserver having existing data. The server has 2X4TB disks in RAID-1 configuration usint Intel RTST. And Because the one is failing (the RAID-1 is degraded) I disassembled the RAID-1 configuration (using Intel…
Dimitrios Desyllas
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Storcli - migrate from RAID1 to RAID10

I have a system with two hard drives set up in RAID1. I've purchased another two - same model/size etc. - and now I want to reconfigure them to RAID10. I have storcli installed in VMWare and is working, but I can't find anything about converting to…
MarkoA
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Raid Status - Online vs Ready vs Foreign

What does Raid state Online, Ready or Foreign means? What other state can it be? What needs to be done in such state? I think Online is the only safe state. What are the DO's and Don't during clearing its state or replacing drives (or when should we…
user630702
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What would you call this "RAID" ? RAID 1+6?

I have Snapraid running as snapshot RAID6 (2-parity disks) for my 9 disk array which calculates new parity once a day. Then I have Drivepool duplicating certain very important folders on the array to all the data disks in realtime as in RAID1.…
Osjur
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What a benefit of RAID 1,5,10 vs every night simple diff backup

Given: 2 HDD in RAID and case when we lose 1 of them after 3 years: If we use RAID 0, we lost data If we use RAID 1, we have a copy on possible also bad-health disk, any restore may cause failure also If we use RAID 5, same as RAID 1, but we can…
alexloiko
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Replacing RAID 1 with larger drives - professional standards

I work with one of the biggest hosting companies on the planet. I got a dedicated server with hardware RAID 1 and two SAS 15k disks. I asked my hosting company if they could replace SAS with much bigger SATA drives as I need space on this machine, I…
rumburak
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LSI MegaRAID Storage Manager - Delete primary array

Situation: server contains two RAID-1 arrays; one primary for OS and one secondary for data. My question is: If I delete primary array with command /opt/MegaRAID/storcli/storcli64 /c# /v# del what will be erased? Only MBR or whole disk with all…
StealthByROOT
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Recover RAID 1 after unclean unmount

I have two drives in my desktop in RAID 1. My computer locked up on me yesterday, so I used SysRq REISUB for a "safe" restart. When the machine booted back up, I realized there was no data on my RAID drives (a few empty directories, but no actual…
Chris
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converting from raid 10 to raid 1 on windows server 2012 r2

My current setup is that my OS and other important installed files are all installed in my raid 10 array, however, I need the 2 drives (ssd) in the array for something else, is there a way to convert my existing raid 10 to raid 1? or do I need to…
FocalPoint
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4-Drive Software RAID1 vs RAID10 for Extreme Reliability Purposes

4-Drive Software RAID1 vs RAID10 heading tells you what I am contemplating about. Hardware: 2x 1TB Enterprise-class HDDs + 2x 1TB Consumer-class HDDs. OS and Software: Linux Debian Jessie (stable) with mdadm. Intended purpose: Extreme reliability…
Vlastimil Burián
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RAID Mirroring Without data loss

How can one save data from being lost while configuring RAID 1 mirroring on X 3550 M5 lenovo/IBM server having M1215 RAID controller?
Capkrypt
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Need to extend var partition

My /var is full and need to extend its size. I tried different ways but could not succeed. Cent os 7 with two 1 TB HDD RAID 1 Configured. I have added 2 TB HDD to add space for /var. **# output for fdisk -l** Disk /dev/sda: 1000.2 GB, 1000204886016…
Prabin P Sharma
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