RAID 1 is the official name for mirrored disks or volumes

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Raid 1 mdadm (linux) disk failure recovery: DRDY err (UNC) keeps repeating can't reach login

Over the weekend, I got several emails from our network storage server (just a custom box with CentOS 5 and 2 2tb drives software raid 1) indicating SMART detected issues with one of the drives. I ...
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444 views

Move mount point to new RAID set

I have a CentOS 5 production server with multiple OS-managed RAID-1 sets. I'd like to add a new mirrored set and move the /var partition to the new drives. What is the best way to do this? On a ...
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4answers
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RAID vs AHCI on Windows7 x64 ASUS

I have an ASUS p5ke-wifi/ap which has built-in RAID controller. From the BIOS, I can choose between 3 controller types: IDE RAID AHCI In that order. This setting was set to AHCI when I installed ...
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2answers
736 views

Converting software RAID1 to hardware RAID1 without losing data

I have a home server running Ubuntu Jaunty and housing a 2 x 2TB RAID1 array. It is a software RAID but I'm looking to pull out those drives and put them in a external RAID enclosure to save space. My ...
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1answer
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RAID 1 - “Add Mirror” greyed out

I am trying to RAID 1, two hard drives in Windows Server 2008. They are the exact same make and size. One has data on it the other is blank and formatted. They are both set as dynamic disks. ...
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1answer
636 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
297 views

Recoverable RAID configuration for Windows 7

I'm getting Windows-7 in the next couple days to install on a home-built 2-disk system. The motherboard supports fake-raid, so I'll be setting up some RAID0 and RAID1 volumes. My hope is to make the ...
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2answers
348 views

Dual-booting RAID 1

I have three drives: two 1TB hard disks, one 120GB SSD. I want to install Ubuntu (preferably, but justified alternatives are fine) and Windows 7 on the SSD, and have them both read from the other two ...
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1answer
481 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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3answers
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RAID-1 - hardware or software?

I've been looking to set up a pair of RAID-1 (mirrored) drives for data archiving. My first reaction was to just go out and get an enclosure with 2 drive bays and a built-in RAID-1 controller. After a ...
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2answers
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Windows XP SP3 does not recognize my RAID SET?

I have a EP45C-UD3R motherboard and recently installed a Sil3132 PCI-E controller with 2 500GB Sata2 HD, at bios level the controller is recognized and I can setup my RAID SET which I set to RAID1. ...
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2answers
942 views

What versions of Windows support built-in disk mirroring?

I know that some editions of Windows has built-in support for disk mirroring. But on my computer with Windows Vista, I can't find it. What editons of Windows has built-in support for disk mirroring ...
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1answer
872 views

How do I activate software raid-1 in Windows?

I use Windows Vista Ultimate, and have four disks of 500GB. Windows is already installed on one disk, the systemdisk. Now I would like to mirror the system disk using Windows built-in software raid. ...
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1answer
101 views

Partitioning 2 SSDs of different capacity for RAID 1

I have two SSDs. One has 64G the other is 32G of size. I'd like to create a RAID 1 configuration with Linux (it would be a software RAID), and I'm wondering if what I'm planning is possible or wise: ...
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2answers
577 views

I need something like an EEE box, only with RAID 1

I need a silent, tiny computer which I would use as an SVN and LAMP server (only for development at home, not as a production environment). I need RAID 1 to ensure the safety of my data. Could you ...
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2answers
825 views

RAID monitoring software

I'm running Windows 7 Home Premium 64bit from a 2 disk RAID1 volume. I'm using the Intel RAID controller built into my motherboard. I'd like to have some sort of early warning if one of the drives ...
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2answers
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I want to implement RAID 1 for my two hard disks

My system configuration is: Intel Core 2 Duo 2.2 Ghz with FSB 800MHZ and 2 MB L2 Cache Intel D945 GCNL Motherboard, which features 4 SATA and 1 IDE Mileinium RAID card, with 4 SATA and 1 IDE 2 * ...
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1answer
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What exactly does a RAID 1 resync do?

I just have a quick question about RAID 1 resyncs. When a RAID 1 array performs a resync is it actually copying all the data from one disk to another or is it just analyzing the data on the disks and ...
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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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2answers
831 views

In Wikipedia, it says RAID 1 has a space efficiency of 1/n. Can that be correct?

right now on Wikipedia, it says RAID 1 (Mirroring) has a space efficiency of 1/n, and Space efficiency is given as the amount of storage space available in an array of n disks, in multiples of ...
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How to install RAID drivers on already installed Windows 7?

64-bit Windows 7 Ultimate 6GB RAM Intel i7 920 Intel X25-M SSD 80GB 2,5" Club 3D Radeon HD5750 GA-EX58-UD4P Motherboard I've been running fine with Windows 7 installed on the SSD. I wanted to ...
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188 views

How to have 3 operating systems on a mirror RAID 1

How do one proceed if I want to have 3 Operating Systems: Windows 7, Ubuntu, Debian plus a swap partion, all in all 4 partitions? Lets say I have 2 disks, each 640 GB and make room -> 300 GB for ...
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3answers
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Dual Boot Windows 7 & Linux Ubuntu on SSD with Data on 2 HDD's in RAID 1

Can someone point me to clear directions for a Dual-Boot system using Windows 7 on #1 SSD and Linux Ubuntu on SSD #2? And then configuring 2 HDD's in RAID 1 for Data (NTFS)? Clean Install all around. ...
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Practical RAID Performance?

I've always thought the following to be a general rule of thumb for RAID: RAID 0: Best performance for READ and WRITE from stripping, greatest risk RAID 1: Redundant, decent for READ (I believe it ...
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What laptops support RAID-1 mirroring?

What currently available laptops support RAID-1 mirroring or other RAID configuration? Laptops with more than 1 internal hard-drive bay: HP8530 ... (This is very similar to a previous question ...
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2answers
395 views

looking for a solution for a Software Raid on my XP computer

Recently, I purchase 2x1TB drives for my XP computer, I want to use RAID 1 for the redundancy, but the motherboard is little old and can't support that. Some articles introduce how to make it happen ...
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1answer
675 views

Possible to (re)sync 2 drives into RAID 1 Array?

Have an XP machine with 2 drives configured in a RAID 1 array. Trying to fix a boot problem, I took the drives out to run chkdsk on them, and I accidentally got them out-of-sync (event logs, etc). ...
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5answers
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RAID 1 not performing as expected

I recently bought a new 320Gb hard drive for my computer to set up RAID 1 on it for some added security. Installation went as smooth as could possibly be (plug in power, plug in data cable, start up ...
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1answer
927 views

Raid-1 Western Digital Green AARS, cloning and WD Align Utility

My current setup runs on top of 2x Western Digital 2500KS drives on Raid-1, using the motherboard's 780G raid controller, on WinXP. Everything is fine, but the drives are a bit noisy. I am ...
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1answer
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Resize a RAID 1 volume on OS X Snow Leopard - how? (Note: software raid)

I've scoured the Internet in search of an answer to this question, and as usual with OSX-related topics, I often don't find any deep-dive technical explanations sufficient enough to feel confident ...
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RAID-1 and regular drive removal (using RAID-1 as a backup measure)

Is using mdadm's RAID-1 of 2 partitions (one on laptop's internal HDD, one on external HDD) a good idea. I want the system to work as RAID-1 if both drives are present, work as regular volume ...
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Is RAID 1 on a home PC useful? [closed]

Is RAID 1 on a home PC useful?
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1answer
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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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Can I take my ReadyNAS drive in Raid1 and plug it straight into new different machine?

I would assume that I can just take my HDD out of my NAS (in raid1 mirror) and plug it into another enclosure and have it work off the bat but I'd like to make sure... Any ideas? Edit: My current ...
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2answers
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Accidentally set BIOS from RAID -> IDE; now data inaccessible

Update #1 1) Booted into Ubuntu Live CD 2) Connected drive using a SATA->USB converter 3) Very meaningful error message: Error mounting: mount exited with exit code 13: $MFTMirr does not match ...
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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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Does RAID 1 protect against corruption?

Does Raid 1 protect against data corruption? For example, let's say that I am keeping all of my important files on a NAS that uses 2 disks in a RAID 1. If one hard drive has some kind of internal ...
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Create a mirrored array using an existing drive

Using OS X, I have a 1 TB hd. I have an empty 1 TB that I want to use to create a mirrored array. All the instructions I can find about creating the mirrored array require copying the existing hard ...
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3answers
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Motherboard RAID support or Hardware RAID controller?

About a year ago when I was researching how to set up some drives using RAID on a PC I was planning to build, everyone said I would need to purchase a hardware RAID controller, the decent one was ...
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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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How do I setup a software raid 1 on 2 newly installed HD's in ubuntu

I setup a HTPC about a month ago, and just expanded my storage by adding two 750GB drives in addition to my OS drive. I am using Ubuntu 9.10 as my OS and need help setting up a raid 1 on the two ...
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1answer
532 views

raid 1 + OS drive windows 7 ep45 ud3p

I have an existing drive with my OS and data on it, because of shortage of storage, I bought two Samsung 2TB drives to form a RAID 1 configuration. I understand that RAID 1 is a redundancy config. - I ...
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2answers
4k views

Is it possible to enable software RAID 1 on Windows XP system partition?

I have heard, that it should be somehow possible to use just one partition with Windows XP, and be able to mirror that by enabling RAID 1 in XP. I'd appreciate tips how to do this. If this is true, ...
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Do newer Mobo's do RAID in a way that allows the disks to be viewed as a normal non-RAID HDD if transferred to another computer?

I built a new PC this weekend, and one of the joys I had was to transfer my RAID 1 array to the new system with a different mobo. The disks were not recognized at all, by either the mobo (no ...
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Can a mirrored (RAID-1) disk be plugged into another system to be read?

If I have disks in a RAID-1 array, can I take one of them out and plug it into a different system to be read? This means, on the target system, treating the disk from the RAID array just like an ...
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781 views

Large File Copy Freeze, Hardware Setup

My computer is home built with the following components: BIOSTAR A780G M2+ SE AM2+/AM2 AMD 780G Micro ATX AMD Motherboard AMD 64 X2 6000 Kingston HyperX 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 ...
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What's the difference between RAID 1 software mirroring and Fake RAID?

I've just ordered two new hard drives for my main desktop and a copy of Windows 7 Professional 64-bit. I'd like to do a clean install of Windows 7 onto the new drives (leaving my old Windows XP ...
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3answers
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In Ubuntu, how to get email notifications about (software) RAID problems?

I know getting email notifications should be possible, and perhaps even enabled by default... But how to make sure alerts are properly configured, and if, for any reason, they arent't, how to set them ...