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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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Configure RAID 1 on ThinkServer TS140

I am setting up a server for a business, and one of the specifications that they have set is a RAID 1 configuration for the two drives in the machine (the OS will be installed on this mirror). One of the mirrored drives will be in a hot swap bay,…
Caturday Saint
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How can I check if my server have RAID-1?

With lsblk command I get: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 232.9G 0 disk ├─sda1 8:1 0 32G 0 part │ └─md0 9:0 0 32G 0 raid1 [SWAP] ├─sda2 8:2 0 512M 0 part │ └─md1 9:1 0 511.4M 0…
Panagiotis Koursaris
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Are there any two-bay hardware bit/block level replication devices (perhaps RAID-1)?

Here's what I'm hoping to do: Have two drives in a hardware bay that can be pulled from the front without dissassembly Read and write to it as a single (NTFS) disk Be able to pull either drive and plug it into any windows machine as a NTFS disk…
Ehryk
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Handling the potential risk of writing random bits to storage during power loss with RAID

Is it possible for a power failure to cause some part of a machine to write one or more random bits to a storage device? Someone proposed the following idea to address such a risk: create multiple partitions on a single disk which together form a…
andrew-e
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Can Docker Corrupt a Software RAID Setup?

I read that software RAID should not be implemented on a machine that also has ESXi virtual machines running. Does this mean that I would want to avoid LVM and or LXC/Docker containers as well on this server? Thanks
mh00h
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LSI MegaRAID 9240-4i & RAID1 (mirroring) on ZFS filesystem

Exist any incompatibility between an existing virtual drive created on LSI MegaRAID 9240-4i SAS/SATA Controller with RAID1 and the ZFS filesystem? I tried to make mirror(2xSATA HDD 300Gb) on freebsd 10.1 release but don't worked. Detected…
S3th76
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3disk in raid 1 using half/half

Im using a mdadm software raid system on my new server which runs 3x120GB ssd drives. Currently, this is the preinstalled configuration that came with the server cat /proc/mdstat Personalities : [raid1] md2 : active raid1 sdb2[1] sda2[0] sdc2[2] …
Stacknerd
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Does RAID1 also checks for corruption?

I have two 1.5 TB disks, and I don't trust both of them because of weird noises and bad clusters. I was wondering if I put them in a software RAID1 array (mirrored volume in Win7) it will write my data to both disks, but will it also make sure that…
Maestro
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Access Server 2003 formatted HDD from W7 installation

I have a server problem, not sure what the best approach may be. The scenario is this: OS: Server 2003 The OS was on dedicated IDE drive; there are 2x1TB SATA drives which were in a Windows software RAID1, formatted to NTFS. The dedicated drive…
Neph
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Raid 0, Raid 1, Raid 5, Raid6, Raid 10 Read/Write performance?

Assume a single disk has a baseline of 1W & 1R performance, how does the different RAID configurations behave? My initial guess: Raid 0: 2W 2R Raid 1: 1W 2R Raid 5: ? ? Raid 6: ? ? Raid 10: ? ? Updated: Assumptions: Using hardware RAID With…
Howard
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manually editing shadow file on disk from raid1 array

At work we have a machine to which root password has been lost. I have pulled out the disk and mounted it to another computer. Now I think the next step should be editing root password in the shadow file. But the disk I have pulled out is actually…
clime
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Installing MySQL in CentOS 6.2 with RAID 1

Is the installation of MySQL in CentOS with RAID1 the same as that of none? If not, what are the changes in the process of installation?
reena saur
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raid 1 and high load average

i have a server with high load average, I think the problem is the raid 1. Server is in one or two points of load average, and in seconds jumps to 10 points (md4_raid1 process), this happens once or twice per minute cat /proc/mdstat Personalities :…
melocoton
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Setup RAID 1 to install Windows without BIOS RAID or hardware RAID

I am looking for a software RAID or any technique that can do a RAID 1 from 2 NVMe and then I can install windows 11 on it. My BIOS has DAID but it only support SATA and not NVMe.
Khoa Of GOd
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Can a SATA hard disk be removed from bay w/o shutting down after being marked 'failed' in RAID1 array?

We have a software RAID1 array set up in a Supermicro 1u server. Can a SATA hard disk be removed (in a bay drive setup) w/o shutting down the machine? This would be after marking it 'failed' in the RAID1 array. If so, I would assume you could…
jamminjames
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