RAID 1 is the official name for mirrored disks or volumes

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Multiple disk controller cards and RAID1

I'm creating a btrfs RAID1 array, and I have two SATA3 controllers - one on the motherboard and another in a PCIe slot. For simplicty's sake, let's say I only have two drivers, sda and sdb. Would I ...
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83 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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3k views

How do I recover data from only a single drive in RAID 1 setup on Synology DS214+ NAS?

I'm doing this so I know how to recover my data in case the NAS itself dies out and I'm only left with just a single drive from the 2nd bay (or from the 1st bay). Setup Synology DS214+ NAS 2x 4TB ...
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2answers
337 views

RAID1 drive failed; partition missing after reboot

I think I shot myself in the foot here, but let me quickly divulge what's happened: Intel Matrix Storage Manager started reporting that one of the two disks I had in a RAID1 array configuration had ...
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1answer
229 views

How to limit bandwidth (file sync) to a specific windows file share (smb - raid1 backup device)?

So I decided that I needed a Raid1 backup device for the home. Mostly to backup documents and media. There will be about 3-4 Windows systems in the household that would sync files to this device. I ...
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1answer
251 views

Repair partition table for disks in a RAID1 array

Here's my problem. I have several arrays. RAID1. I've scanned each drive that's part of an array with gdisk and it reports problems. One array (2 drives) has a damaged GPT partition table and a ...
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108 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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172 views

Debian/3ware 9500 - RAID Failure?

I swapped the hard disks from my home server into a new case last night (new mobo/CPU/RAM) and transferred its 3ware 9500 PCI-X SATA RAID card with it. The machine has 4 disks configured in 2 RAID1s - ...
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3k 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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38 views

How to undo accidental RAID initalization operation (recover data)? [duplicate]

Summary of the problem: I have two disks re-configured as RAID 1. instead of copying the data to the empty disk, it deleted the data from the non-empty disk. Here's what happened: 1. In the last ...
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1answer
359 views

Installing Fedora 19: only shows one SSD of two

I'm trying to install Fedora 19 on two SSDs (Software RAID 1 if possible). These SSDs were used in another computer before. I deleted the MBR record and the partition table with dd if=/dev/zero ...
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871 views

Can a secondary SATA drive under Win 7 Pro software RAID 1 mirror be boot-able with no hassle?

Using Windows 7 Professional software RAID 1 (Mirror) of two identical SATA drives is it possible in the event the primary drive fails that the system may boot off the secondary drive without doing ...
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1answer
934 views

D-Link DNS-320 Degraded RAID-1 will not rebuild…? any suggestions?

I'm not sure what caused it but it just keeps looping the rebuild process. Gets to 100% of re-syncing and then starts at 0% again... Just interested in a solution but not finding anything with ...
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1answer
276 views

Can't format hard drives under RAID-1

I have a Gigabyte GA-EP45 extreme, which contains a "Intel Matrix RAID controller". On lspci outputs as: RAID bus controller: Intel Corporation 82801 SATA Controller [RAID mode] I bought two ...
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1answer
112 views

How can I delete soft/motherboard RAID 1 from a different computer?

I have a drive. It was part of a RAID 1 mirror on a motherboard-based raid controller (nVidia controller on an ASUS A8N-SLI Deluxe), which, if I understand correctly, is considered to be "soft" raid, ...
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1answer
204 views

RAID 1 with ThinkPad T530

A friend of mine has a T530 (I think he bought it last year) and I checked the spec it seems to support RAID 1 (mirroring). He currently has one hard disk running and is considering RAID 1 and is also ...
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1answer
424 views

Adjusting mdadm priority on Ubuntu

I have Ubuntu 12.04 running on my new server, and it is setup to run off of one drive, then 2 drives that are mirrored using mdadm. When streaming files or media from it, it is extremely slow. I was ...
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2answers
854 views

Intel Matrix Storage / Raid 1 / Asus P5Q-Pro

I have configured two 1TB Western Digital Green Hard drive into Raid 1 Array via my motherboard BIOS last month. Everything works fine and all data are copied to array and system works properly. few ...
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3answers
425 views

Hard Drive Slow down.. where do I start?

I just built my first PC less than a month ago. I have a SSD drive with my Windows Operating System on it, and I have two Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drives ...
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2answers
115 views

Can I extend RAID 1 on Debian Squeeze?

I have Debian Squeeze in a RAID 1 on 2 physical 2 TB disks. Is it possible in the future to add two physical disks and extend the RAID 1?
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1answer
264 views

How to properly change directory structure/mount points for directory?

After several attempts to formalize my problem, I think, I finally managed to do it. What I have: mount -l ... /dev/md123 on / type ext3 ...
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3answers
235 views

Is it possible to create a RAID 1 array for ubuntu and install xp on a non-RAID part of the drive?

I was wondering if it is possible to setup a hardware RAID 1 array on 2x1TB drives for the installation of Ubuntu 12.04 whilst leaving some space free outside of the RAID array to install Windows XP ...
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1answer
145 views

Add new partition under raid-1 array

I have small /tmp partition, and I want to create new partition with size 10 GB than current one, I have two hard disk on raid-1 array # mdadm --query --detail /dev/md0 /dev/md0: Version : ...
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How to create a Software RAID1 in Windows 7 Home Premium? [duplicate]

Possible Duplicate: Which software raid modes does each version of Windows 7 support? Using the built in DISKPART program, or Disk Management, or anything else native to Windows 7, is there ...
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1answer
33 views

Hard drive raid compadibility

Given that I have a RAID 1 array of two 2TB hard disks 3Gb/s @ 5400rpm could one of the drives be switched out for a 2TB 6Gb/s @ 7200 rpm? How do you know if two drives will be compatible in a RAID ...
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308 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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1answer
375 views

How to check consistency of an external RAID1 array in Windows?

I have a Western Digital MyBook Studio II configured into RAID1 (2×1TB) and connected to a Windows 7 machine via USB 2.0. RAID is done through a controller in the enclosure - I've never seen each of ...
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1answer
463 views

How to convert existing disk to raid1 in debian

I have 1Tb drive with LVM on it. Now I've installed another 1Tb hard drive. And I want to make RAID1 without losing data on the first disk. Is there any way to do that without backing up data and then ...
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840 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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1answer
136 views

How to identify raid1 disks

I would like to know how mdadm identifies physical disks of raid1 . I think it is managed by uuids not device file like /dev/sdc2 /dev/sdd2. But I can`t confirm such information of raid1.
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973 views

How to remove swap partitions from RAID 1 Array on Ubuntu?

Can anyone point in the right direction on how to remove SWAP out of a RAID1 configuration on Ubuntu 10.04 server? According to the Ubuntu Advanced installation guide, here, it said to add swap to the ...
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256 views

Windows 7 Mirroring Drive Failure

I had a few questions when a drive fails that is setup with software RAID 1 in Windows 7, e.g. Dynamic disk mirroring: Will it still boot using the good drive (assuming boot drive is RAID 1), or ...
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1answer
1k views

Windows cannot boot after configuring sata to RAID mode

I have recently set up a new PC System, and still have issues configuring the harddisc raid. Here is the detailed description of my problem: The relevant components are an ASUS P8Z68-V PRO, Sockel ...
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0answers
736 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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1answer
980 views

mdadm raid-1 after restarting usb devices not accessible anymore

Is my mdadm software raid in danger of data loss??? My both two new built raid-1 on external usb disks behave strangely. Both were fine and rebuilt and cat /proc/mdstat showed Every 10,0s: cat ...
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1answer
406 views

Raid 1 Disk Syncing

When attempting to test that my RAID-1 configuration was working, I am thinking that I may have made a mistake that could cause future corruption of data because I booted from a single HDD when the ...
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1answer
759 views

I am researching a raid-1 setup with 3 drives where one is cycled off to an off site location

To be more specific: What procedure, or what kind of hardware would you need to set up a Raid 1 with 3 drives, where one of them is cycled out to an off site location. So set up in something like ...
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0answers
687 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 ...
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1answer
188 views

effective back-up using Raid / Win7 back-up

I have a stand-alone pc system with two 2 tb harddiscs, one of which configured as Raid1, i.e. mirorring. The operational drive is partitioned. I use an external 1 tb harddisc for back-up using ...
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1answer
116 views

Setup of RAID using two 320gb hard disks in a NAS (DNS 323)

Hi there I would like to setup a RAID back up type system where 1 drive is mirroring the other but I want to put them in a NAS so I dont have to fiddle around with the existing hard drives Does ...
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1answer
644 views

Correctly build Raid1 with a PCI controller card & UBUNTU 10.04 desktop

I bought this card from newegg to add a 2-250gb-disks Raid1 to an UBUNTU 10.04 desktop. I then purchased two WD 250gb Blue Scorpio, built the Raid1 set via the controller BIOS as the manual suggest ...
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1answer
485 views

Why does my simple Raid 1 backup storage perform really slow sometimes?

I bought 2x Samsung F3 EcoGreen 2TB hard disks to make a backup storage. I put them in Raid 1 (mirror) mode. Made a single partition and formatted it to NTFS, running Windows 7. For some reason, ...
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2answers
2k views

Can one build a single disk RAID 1 array?

I have an Nvidia hardware RAID 1 array and need to reformat. But I don't have any spare storage media, so I need to get along with the 2 disks in the array. I figured I'd do as follows: Delete the ...
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1answer
143 views

RAID Problem with 2 SATA

I have two 160 gig SATA drives in a RAID 1 configuration. The other day, I rebooted my PC and found that the RAID array had somehow spontaneously been split into two, i.e. each drive had its own ...
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1answer
742 views

RAID with pen-drives, it is possible?

Can Windows 7 manage 2 or more pen-drives (or external disk drives) to implement a RAID-1 to backup the content of them? I have a pen-drive and an external hard disk, both with really relevant and ...
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1answer
401 views

Disk space and performance with Raid 0 and Raid 1 [duplicate]

I am buying a desktop from Dell, they have an option 2 x 500GB 7200 RPM 2.5" SATA Hard Drive with Raid 0. I Googled about Raid 0 and found that it provides best performance. But I am confused about ...
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2answers
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Is it better to buy a 4TB RAID 1 hard drive, or 2 hard drives with 2TB each, and just use SyncToy (or invest more and buy a RAID 5 drive)?

Somebody said that with a RAID 1 drive, 4TB will be 2TB of storage, but if the controller goes bad, then the whole drive will go bad -- unless WD can send you a new enclosure? (stated in ...
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1answer
80 views

RAID 1 scalability [closed]

Assuming I'm in a home environment and I want to keep my data secure, how would I build an expandable custom NAS? I can't afford a real SATA/SAS controller. I'm thinking of a scalable array of RAID 1 ...
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1answer
4k views

Windows 7 and software RAID 1 for system [closed]

So I have been using Linux software raid for ages, unfortunately now I need to install Windows 7 on a notebook and since the machine has two disks I was wondering how do I setup software Raid in ...
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1answer
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What will happen if I reconnect 2 halves of two-way RAID mirror after using them independently?

Suppose I have a storage space with two-way mirror based on 2 physical USB drives a and b. Then I disconnect b and connect it to another computer. Then I use—write some data—to both degraded storage ...