RAID 1 is the official name for mirrored disks or volumes

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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
14k 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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829 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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2answers
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combining SSD and hard disk in software RAID1?

Does it make sense to build a Linux software RAID-1 (mirroring) using an SSD and a normal hard disk? I want to combine the advantages of SSD (fast transfer rates, fast access times) with the ...
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3answers
8k views

How can I move RAID 1 hard drives from one enclosure to another or retrieve the data another way?

I have a Fantom G-Force Mega Disk MDN 1000 dual drive hard drive enclosure with two 500 MB hard drives setup in RAID 1 mirroring mode. Unfortunately, the enclosure/controller has failed, for the ...
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1k 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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425 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
296 views

Linux software RAID 1 without metadata on the drives (still mountable without the raid setup)

I know I can simply create a degraded raid array and copy the data to the other drive like this: mdadm --create /dev/md0 --level=1 --raid-devices=2 missing /dev/sdb1 But I want the specific disk to ...
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1answer
765 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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2answers
2k views

How to move an existing Windows 7 setup to a RAID-1 array?

Currently I have a the following setup: Drive A/B: Identical hard drive's Drive C: 2TB external drive with plenty of space currently. Hardware RAID controller Currently I have Drive A which is my ...
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732 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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Can the drives in a RAID 1 array be rotated?

As a follow-up to my question Disaster recovery backup of files/photos for personal use, it sounds like for personal disaster-safe backup, multiple rotated hard drives is the way to go. One of the ...
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1answer
449 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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3answers
6k views

What advantages and disadvantages have Hybrid SSD/HDD RAIDs

I just read about Hybrid RAID arrays consisting of SSDs and common HDDs which are supported by Adaptec's RAID controllers. Does such a RAID configuration provide real advantage? Isn't write ...
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1answer
769 views

How to resize an encrypted LVM in RAID 1 in Linux?

I am running 3 partitions in RAID 1. Partition : Mountpoint : Filesystem : Encrypted : LVM ------------------------------------------------------ 1 : /boot : ext2 : No : No ...
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1answer
2k views

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

First 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 ...
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2answers
14k views

Does software RAID 1 in Windows 7 improve read speeds?

Does software RAID 1 (mirroring) in Windows 7 improve read speeds? I'd like to set up RAID 1 to help protect my important documents (yes, yes, I know it's not a backup), but performance is also ...
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189 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
547 views

setting up RAID1 on desktop machine with windows XP with the drivers

I am trying to set up a raid configuration on a desktop in which the previous raid failed on a RAID0 configuration when a hard disk failed. I pressed CNTRL-I to get the RAID BIOS up and put the disks ...
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1answer
117 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
1k views

Western Digital disk WD5000AAKS-75v0a0 vs ones without a dash

In one of my computers I have 500GB x 2 WD5000AAKS-75v0a0 in RAID-1 configuration. I was hoping to keep an identical drive on hand as a spare and started looking at prices. First I found this exact ...
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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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2answers
469 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
794 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
686 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
304 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
398 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
492 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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3k views

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
1k 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
964 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
613 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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877 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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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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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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6answers
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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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189 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
3k views

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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3answers
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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
402 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
740 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
943 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 ...