RAID 1 is the official name for mirrored disks or volumes

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Is TRIM disabled even with Windows Soft RAID 1 (Windows Dynamic Disks)

I am looking to build a Windows 2008 Server and wanted to use a RAID SSD array, either via SATAIII or PCIe. Everything I've seen that RAID does not allow TRIM commands to be passed to the SSD, ...
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198 views

Booting Ubuntu with a RAID-1 Boot Failure

I'm planning on picking up 2 SSD cards for my file server and installing Ubuntu on them using softRAID-1. I will not be keeping a hot spare, so I want to make sure that, if one drive fails, I can ...
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1answer
6k views

Install Linux mint with Raid

My MB supports fake raid (Intel DH67CL motherboard). But I was using the system in 'software raid' as I could not correctly set up fake raid in Debian. Now, I decide to use Linux Mint 12. During the ...
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9k views

How can I mount a single RAID 1 disk/partition as ext3?

I need to copy data from a single HD, which used to be part of a Linux RAID 1. I've googled around, but can't find any clue how to mount partitions from this single HD. Background: The HD comes from ...
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1answer
118 views

Can't write to raid on Fedora

I just did a fresh install of Fedora 11 and added Raid 1 following this tutorial: http://www.optimiz3.com/installing-fedora-11-and-setting-up-a-raid-0-1-5-6-or-10-array/ Now I see the filesystem when ...
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How do I safely move a Windows 7 software RAID 1 volume to a new PC?

I have 2 identical drives in an old PC running as a mirror RAID (RAID1) using the Windows 7 software RAID. These drives are data-only drives and are not being used to boot an operating system. How do ...
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RAID 1 Mirror Error with Two Western Digital 500GB Drives

I have Windows 7 Ultimate 64 bit installed on a Western Digital 500GB drive (WD5000BEVT-22ZAT0) that was partitioned automatically by Windows as 100MB System Reserved and 465.66GB drive C. There is ...
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930 views

Windows 7 mirrored volume fails during testing of fail-over mode

I have two hard-drives mirrored (i.e. RAID-1)to be my D: volume (non-boot drive) in Windows 7. Click to enlarge. This is the first time I have tried mirroring in Windows 7, but I've had (sometimes ...
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384 views

Add a small RAID card? Will it help overall stability and performance of my nine hard drives?

Will I get any extra genuine added performance and RAID stability if I insert a basic RAID card into a PCI-E x1 slot? I am considering the Adaptec 1220SA - 2 port SATA, PCI-express (1x), RAID 0/1. ...
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1answer
2k views

Unable to access intel fake RAID 1 array in Fedora 14 after reboot

1st I am relatively new to linux (but not to *nix). I have 4 disks assembled in the following intel ahci bios fake raid arrays: 2x320GB RAID1 - used for operating systems md126 2x1TB RAID1 - used for ...
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P8P67LE Motherboard - SATA MODE RAID; Create RAID 1

As it seems my ASUS P8P67LE motherboard has built-in RAID capability. My OS is previously installed in normal mode and in BIOS setting SATA MODE is set to AHCI (Advance host controller interface) ...
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54 views

Intel RST accidentally selected wrong drive as system drive — how to fix?

Question / TL;DR If Intel RST has marked a drive other than my RAID set as the system drive, how can I get it so that the RAID set is now seen as the system drive, and catch it up to my drive now? ...
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457 views

Have two partitions in RAID1

The answers are unclear wherever I look. I have two 2TB drives for a RAID1 and I want to mirror them while having two partitions on the drives. One partition will be 100GB and contain programs, the ...
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519 views

Windows 8 keeps deleting files from RAID drive

I have an ASRock Z77 Extreme4 motherboard with Windows 8 (not Pro). Brand-new computer, built from new parts. I use a 600GB drive (10,000RPM) as boot drive (let's call it HD1) and 2 3TB drives in a ...
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187 views

Use Intel Rapid Storage Technology with a secondary PCIe RAID card

I have Intel's RST on motherboard using RAID1 (2x2TB) and a boot drive. Trying to add another RAID1 (2x3TB) has failed since RST is limited to 2.2TB for RAID1. Now I've bought another RAID card in ...
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Why does an Intel RST RAID 1 array write faster with write-back cache disabled?

I have two HDDs (5900 RPM) in RAID 1 (mirror). I know, I know, it's painfully slow. I'm currently in the process of replacing them with faster drives, hence this question while I'm testing things. ...
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Is it possible to use software raid in Windows 7 on the boot partition?

I want to use RAID 1 on my workstation configuration at work, and I've been looking at using the build in mirror functionality in Windows 7. When you click on the add mirror option it presents you ...
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RAID 1 without cache protection - ZMCP/backup battery

I'm running RAID 1 on an Adaptec 6405. I'm trying to decide if I need to install the ZMCP on the card to provide Cache protection. Adaptec's ZMCP is the equivalent of a BBU - battery backup for the ...
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175 views

Super slow SDD write speeds with RAID 1

I have a very new computer system, configured in RAID 1, but was surprised that the write speeds were extremely slow! Here is a snapshot of my computer setup: Motherboard: Asus Z9PE-D8 WS ...
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392 views

Cloning Ubuntu mdadm RAID1

I would like to clone a pair of RAID1 drives created with mdadm. I've tried Clonezilla, but there's no native support for mdadm, so it resorts to using dd which is incredibly slow. I've looked for ...
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RAID array failure. False positive?

Background: I have 3 storage units in my PC: an SSD that contains my operating systems a 1TB hard-drive that is about 5 - 6 years old a 1TB hard-drive that is only a few months old The 2 big ...
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Server has Crashed, How to Recover My Data from Raid-1 Configured HDDs?

I was using HP ProLiant ML150 G6 with Windows Server 2008 as File Server. Server is configured with 4x250 GB RAID-1. All of a sudden electricity fluctuates and the server got crashed. Now it turns on, ...
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btrfs does not show drive as missing

I am trying out btrfs and I noticed some funny behaviour: I have two drives in a raid 1 configuration. sudo btrfs fi show Label: none uuid: 52b9c6f6-ce5c-4727-861e-e2fd012e475f Total devices 2 ...
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320 views

md0 RAID1 can't read superblock

i have a problem with my md0 array, which is an raid1 (2 mirrored USB-Sticks) Mount gives "Can't read superblock" cat /proc/mdstat: Personalities : unused devices: <none> fdisk -l ...
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Is `dmsetup remove` safe with respect to contained data?

I have a "lost" SW RAID array as described in this question: http://askubuntu.com/questions/311024/raid1-array-lost-after-upgrade-from-ubuntu-11-10-to-13-04. I have now identified a way to mount one ...
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173 views

Upon reboot, Linux software raid fails to include one device of a RAID1 array

One of my four Linux software raid arrays drops one of its two devices when I reboot my system. The other three arrays work fine. I am running RAID1 on kernel version 2.6.32-5-amd64 (Debian Squeeze). ...
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185 views

Cannot read NAS drives formatted for Linux

I have two hard drives (mirrored) in a QNAP TS-209 Pro II NAS box that won't mount properly. They are formatted for Linux (EXT3 file system) and the problem appears to be with the NAS, not the drives ...
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967 views

How to create a mirror (raid-1) of an already setup and running ubuntu 12.04 system?

I have a fully setup ubuntu 12.04 installed on a single drive and formatting it just to setup raid-1 is not an option Unlike other answers like this one: Ubuntu 12.04 - Add RAID 1 Array on existing ...
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54 views

Software RAID 1 resync's on SATA cable switch?

I made a mistake when I opened up my desktop removed a 2 disk RAID 1 and reconnected them, but with the SATA cables switched, such that sda became sdb and viceversa. On boot, the RAID array started ...
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370 views

Data recovery from a single RAID1 disk

I extracted the disk from a Mybook World 2 (White Led). The device has only this 1TB SATA disk, and it is using RAID1. Yes, it is bizzarre, but WD enabled RAID even for a 1-disk configurations. This ...
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384 views

How to move a software RAID 1 to a new pair of larger drives?

I'm running CentOS 6 on a server that has two 80 GB internal drives, in a software RAID 1. I want to replace this two internal drives with 750 GB internal drives I have available. How do I do this ...
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How to add new partition to RAID-1 array on Redhat FC10?

I have a RH FC10 system with RAID 1 partitions, here is mdadm.conf: # mdadm.conf written out by anaconda DEVICE partitions MAILADDR root ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 ...
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Windows 7 : soft RAID1 and dynamic volumes reliability

My setup is quite classic nowadays : 1 SSD for system/apps and 2 HDDs for data setup in a fake RAID1 array. I also have a backup scheduled every week for the data drive in case it fails because I ...
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834 views

mdadm: hot remove failed

My RAID1 is degraded and I need to replace /dev/sdb. However, I could mark /dev/sdb5 (in /dev/md1) as failed and removed it, but I can't do the same with /dev/sdb1 (/dev/md0 which is mounted on /): ...
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Will Thermaltake Muse R-Duo Raid reset lose data?

I have a Thermaltake Muse R-Duo Raid chassis with two drives installed and DIP switches set to Raid-1. However, only the left lights are lighting up and I have data on the drive. I'm guessing it is ...
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142 views

Linux + convert RAID0 to RAID1 on Blade Server HS21

I have HS21 blade server My blade server configured as RAID0 – one disk ( disk with red-hat Linux OS ) My target is to configure the blade server to RAID1 – mirror with 2 disks ( I need to add second ...
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is it okay to mirror/raid1 different hardisk model in freenas

In my freenas system, I have several volumes running, one of them is consist of 2 3TB WD RED with different model (I forgot the serial, but they are different). Both are set up in a single mirror ...
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38 views

Data loss warning rebuilding RAID1 logical drive

I have a Windows 7 Pro server running RAID1 and from the log, it appears that it 'lost' a drive for a few seconds and now thinks that the RAID1 has failed. I assume it needs rebuilding, which I ...
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Fedora 20 stopped booting after migrating to RAID array

I have decided to migrate my working Fedora 20 installation onto RAID-1 software array. After this operation, I have a problem with booting my system. Background My machine is MacBook Pro (Early ...
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Can't add drive to mdadm RAID1 array

I have a mdadm RAID1 array in a production server. SDA fell out and when trying to re-add SDA3 to MD2 I think it failed. The syslog shows: [28375.974199] sd 1:0:0:0: [sdb] Add. Sense: Unrecovered ...
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extremely long reconnect time to network share

In the past I had used an iOmega and a Seagate Black Armor NAS, both run Linux, both ran perfectly fine until they eventually died. I next switched to an Apple TimeCapsule for both network storage and ...
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Can I convert a RAID1 disk to non-RAID under Windows?

I have a two-bay NAS on RAID1. I'm having problems accessing the NAS, and as a precaution I'd like to save the data elsewhere. I tried plugging one of the drives in my Win7 PC. Windows sees the drive ...
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Recovery of RAID1 After converted to AHCI

I recently made a machine for my brother with a 500 GB solid-state for the OS (Win8) and two 1-terabyte hard disks in a mirrored RAID for separate file storage. A few weeks ago having the mirrored ...
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395 views

How to use Hardware RAID in Ubuntu Server

I have an Adaptec RAID-Controller and created an RAID-1(Mirroring) succesfully. Now I have installed Ubuntu Server 12.04.3. When I type fdisk -l I get this output: bf@fileserver:~$ sudo fdisk -l ...
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Ubuntu RAID hardware update

I have a RAID1 (Intel Raid controller), but I have more 2 slots in my server and I'll put there more 2 disks to create another RAID1. I never did it, the only thing I did is simply add standalone ...
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255 views

Data recovery from a RAID1 disk

I extracted the disk from a Mybook World 2 (White Led). The device has only this 1TB SATA disk, and it seems it is using RAID1 This is a report from disktype: francesco@blackhole:~$ sudo disktype ...
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0answers
385 views

What triggers a RAID 1 mirror rebuild on a Lacie 2 Big USB3?

I have a RAID 1 mirror on a Lacie 2 Big USB3. When I break the mirror by pulling out one drive, keep making changes on the remaining drive and finally put the first one back in, the drives stay ...
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708 views

Windows 7 won't boot from raid-1 disks until secondary non-bootable disks are removed

I have an ASUS X58 motherboard with a Intel ICH10R southbridge raid controller. Bootable raid-1 SATA disks are on channels 4, 5. Secondary raid-1 SATA disks are on channels 0,1. Everything was ...
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561 views

dmraid -r" just returns No RAID disks

I have installed centOS 5 on our HP Proliant ML110 GH6 server and configured the Smart Array through BIOS Now, i would like to set up an e-mail notification with the RAID status (especially if it's ...
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574 views

Raid recovery in gigabyte GA-8I945 Pro

This was a working machine until a few days ago. And now it won't boot into the OS, during startup if makes clicking sounds (I think from one of the drives). Installed OS: Windows 2003 Web edition ...