RAID stands for Redundant Array of Independent Disks, and is a technology which can provide increased reliability, performance, and/or redundancy by utilizing multiple hard drives simultaneously. RAID can be implemented in a computer via either a hardware or software controller.

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Can't install windows - setup can't see my hard disk (RAID1)

I am trying to install win8 x64 on my machine. The machine has two hard drives connected in RAID1 I have just created : image I have inserted the USB containing the Windows installation media and ...
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184 views

Synology hybrid RAID

I thinking about buying Synology NAS. I prefer to have, for example, two discs (1 TB), but only part of them used as mirrored (protected) storage. For example 200 GB of both discs used as 200 GB ...
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276 views

RAID 5 degraded performance

I'm currently rebuilding my fileserver, but because of SATA port limitations, I can only use 5 disks at a time. I've remove a drive from my original RAID, so I've been able to create a new degraded ...
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201 views

Rebuilding a RAID 1 without data loss, recover from unallocated partition data

Mobo: ASUS P8Z77-M/Pro Gen 3 RAM: 32GB (4 x 8GB) Power Supply: corsair HX850 HDDs:Configuration before the problem: 1 x 128GB SSD for Windows 7 professional 64-bit 2 x 3TB drives in RAID 1 on the ...
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3answers
632 views

Error on rebuilding Linux raid-1

I have a linux box which acts as a home NAS with 2 x 1 TB hdds in linux raid-1. Recently one of two drives failed, so I bought a new one (1TB WD Blue) and put it on. Rebuilding starts and stops at ...
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86 views

How do I achieve software raid 4 array with different size disks with the largest disk being the parity?

For the last year I've been using a piece of software named unRAID built on top of slackware to host my NAS. I feel like I want to move on and evolve and build my own NAS setup on top of another ...
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1answer
448 views

Assembling an mdadm array with “possibly out of date” disks

I've recently moved house and have had some power problems after switching on my file server that's using a mdadm RAID5 set up. The file system I'm using is ext4. It seems that at some point two (of ...
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117 views

What is the disk/partition size limit of ReadyNAS Ultra 4?

I'm currently using a NETGEAR ReadyNAS Ultra 4 with 3x 3TB hard disks in X-RAID2. Soon I'm going to add a fourth disk which will give me 9TB of space plus one disk for parity. My question is; is there ...
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258 views

Running multiple RAID-1 arrays on the same server

Is it possible to run multiple RAID-1's on the same machine? I have the following Motherboard: http://www.newegg.com/Product/Product.aspx?Item=N82E16813182251 Would I need to get RAID cards?
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96 views

SATA-II SSD Raid 0 slow on Windows-7

I have 2 SSDs and made a RAID 0 with the on-board controller of my mainboard. But i only get 130 megabyte/second average read/write speed which seems to be pretty slow for me even for SATA 2 which ...
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306 views

/dev partition missing, so mdadm broken. How to get Linux to see partition?

Upgraded a Linux box and changed out the root drives. There was a RAID-5 array of three SATA drives that I moved over (not root). Reinstalled the OS but was CentOS 6.4 before and after. # mdadm ...
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28 views

NVidia raid 5 array spooling sounds and delay

I've had a raid 5 array setup with 3 2TB WD Green drives for about 3 years now. Starting last week, when I would access the array for the first time, I hear a loud drive spooling sound and experience ...
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163 views

Create a mdadm raid mirror of an existing lvm

Hello I'm trying to figure out how I can create a pretty strange mdadm mirror of my lvm. I have 4 disks, (sda,b,c,d). Each disk has 2 partitions: 1Gb - physical volume 500mb - Swap My system lvm ...
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1answer
209 views

Trying to clone raid (striped) To USB Hard Drive

I am trying to clone a raid drive that was striped over to an external USB hard drive. I have tried Paragon in both clone and image and restore, EaseUS in both clone options, and Acronis. Nothing ...
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122 views

NetApp's minimum disk requirements for RAID4 & RAID_DP arrays

This question has been lurking in my mind for a very long time: The Wikipedia article for RAID http://en.wikipedia.org/wiki/RAID says that we need 3 disks for RAID4 and 4 disks for RAID6 (NetApp's ...
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1answer
83 views

Any Major Issues Changing OS X RAID Volume Name

When I set up my RAID 1 array to hold all my data, I called it Data RAID. The space in the name is now beginning to bite me with programs that can't handle spaces in path names. I want to change it to ...
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1answer
116 views

SSD RAID Controller, 6Gbps bandwidth limit for the whole controller or per SSD [closed]

We are looking to buy raid controllers and 4 SSD's in raid10 on it, will the raid controller be a bottleneck of this setup?
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1answer
863 views

Build a degraded RAID 1 on Intel's Z87 chipset?

New motherboard comes in tomorrow, it's an ASUS Z87-Pro, and given the HDD scares I've had recently, I've decided to use a few new drives in conjunction with the old ones in two RAID 1 arrays. (yes, I ...
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157 views

U410 windows 7 recovery or installation

I've purchased a U410 4376 2BU. Recently while Windows was booting it suddenly stopped and I turned off the laptop. Then Windows never started again. I'm managed to boot from a USB drive with the ...
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1answer
44 views

Onboard RAID w/ Recovery

I am looking at purchasing the ASRock Z87 Extreme 6ac and I was unclear on if I should use onboard RAID or a dedicated card. My system will be well enough off that I won't have to worry too much on ...
5
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1answer
119 views

Is it safe to “use” to disk if extended smart check is in progress?

As simple as the title suggests. /dev/sda is a unit from /dev/md127 - RAID1 drive. I'm currently running a test - started a smartctl -t long /dev/sda. Afterwards, I started to copy files over ...
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1answer
647 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
119 views

How can I image and restore Windows 7 on a Intel Rapid Storage RAID?

I have some Dell machines using with this card with an 32G SSD and a 2TB HDD. Every live environment I've tried so far has not seen the OS drive. I've tried these: Acronis Clonezilla Ghost Easeus ...
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11 views

Windows 8 RAID 1 - notice but all disk marked as OK [duplicate]

Windows 8 prompt me that raid save error and advise to check HDDs, but all the HDDs are marked as "OK". How could that be possible? Screen are in russian but I hope they are clear. ...
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697 views

Software RAID in Debian

I have two internal 4TB hard drives and I've just started using software RAID1 in Debian Wheezy. I have a few questions: 1) During boot, everything passes except I get a message that reads "RAID ...
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215 views

Using GPT but still restricted by the 2.2TB limit

As my other thread (Debian GNU parted) doesn't seem to be getting any responses and my situation has changed considerably, I thought I'd ask a new question. I followed this article: ...
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1answer
204 views

RAID0 SSD performance degredation

I have a computer built to acquire uncompressed 2048 x 2048 16 bit images at 100 frames per second in real time, writing to disk. A RAID0 of SSDs is thus the only option. For the past month or so, ...
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1answer
65 views

Battery test on Areca ARC-1231

I have a system built around an ARC-1231, and since a few days, the battery is always shown as "Charging (96%)". As this looks fishy to me, I'd like to test the battery. As I haven't found anything ...
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3answers
382 views

How to set up a FTP server

I am in need of creating an FTP server that can be accessed across the internet; with a bunch of space. I currently have a computer that I'm considering using, though, if it is not deemed to be good ...
2
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2answers
120 views

RAID, SSD or alternative software for playing back raw 1080p60 video?

I am a researcher working on video compression. As part of my work I need to play back raw (i.e. not compressed) video at the correct frame rate for participants to view as part of a compression ...
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2answers
186 views

RAID on partitions or devices

I plan to create a software-only Linux MD RAID10 array from two identical 1TB discs (using mdadm). Should I create it directly on the two disc devices (/dev/sda and /dev/sdb) or create a partition in ...
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1answer
424 views

Debian root partition greater than 2TB

I have two internal hard drives: a 4TB drive and a 750GB drive. After selecting RAID0 and installing Debian (wheezy) to a single partition, I ran fdisk -l which reported that the size of my root ...
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2answers
62 views

Can I backup multiple hardrives from one computer?

I am looking at setting up a small office with 8 PCs and wanted a cost effective way of securely backing up each and every one of them? I was considering setting up a 9th PC with a RAID controller but ...
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1answer
106 views

btrfs: one whole device + one partition on another device (no data-mirroring), viable?

Currently, /home claims 880G of a 1TB drive. Photos are eating this up quickly, so I want to add a 1TB drive I have lying around to the computer to expand /home. I figured I could use btrfs (I don't ...
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223 views

Best configuration for 3 256 GB Samsung 840 Pro SSD [closed]

I have 3 256 GB Samsung 840 Pro SSD drives, and was curious what would be the best configuration to put them in for windows 8? I was thinking of using one for the boot drive, one for data, and one for ...
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39 views

erased md0, md1 and can't recreate them

I previously had a working RAID 1 array. I think as a result of running grub-install /dev/sdb and grub-install /dev/sdc I somehow wiped my computer of md0 and md1. I need to set them up again. When ...
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1answer
161 views

16TB RAID 10 on WIndows XP

We're still running WIN XP Pro and recently purchased a 16TB RAID External Backup solution from Buffalo (it's a DriveStation™ Quad). It has four each 4TB drives currently configured in a RAID 10. ...
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2answers
60 views

Home Backup Storage Configuration

I'm in the planning phase of overhauling backups at home. Currently, I use CrashPlan Free to backup all the machines to an external hard drive on a server running Server 2008R2. Since this external ...
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4answers
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ZFS Beginner Setup with Different Size Drives

Sorry for the noobie questions, I've been Googling all sorts of walkthroughs to create my ZFS raid, but I can't seem to find the correct links for the answers I'm looking for. This is my first ...
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1answer
522 views

how to add two disks as raid1 in existing ubuntu 12 server

I have Ubuntu 12 server running on a usb stick. I have one 2tb HD (B) and one 1 TB (C)that I want to configure in a RAID1 configuration. I want to partition the 2 tb drive into 4 equal sized ...
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1answer
149 views

How do I assign a JBOD disk to RAID 1 in AMD RAIDXpert?

On motherboards equipped with AMD RAIDXpert, when a RAID 1 configuration fails swapping out the failed drive allowed the computer to boot again, but the new drive was assigned to a singular JBOD ...
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1answer
26 views

Any way to get what is effectively a 4 drive mirror in Windows 7?

I know this doesn't serve that much practical purpose, but I would like to somehow set up a small 400mb partition that is mirrored across 4 drives. I partition using the Disk Management Console, and ...
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1answer
40 views

directory level (logical/virtual?) RAID

First off, let me begin by stating that I do not even really know what I am LOOKING for, in terms of keywords to send to google. Therefore, if you can directly answer my question, great; if not, I ...
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1answer
162 views

Windows Software RAID: How can I view the Windows RAID parameters (disk signatures, etc.)?

The software RAID array in my Windows 7 x64 box failed. Drive tests report the drive itself as healthy. Two drives, RAID1 partition and one RAID0 partition. In Disk Manager, the failed drive shows up ...
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1answer
624 views

mdmda raid 1 - spare drive after SATA cable change

Yesterday my hoster changed a SATA cable of one of my hdds, when my server came back up again cat /proc/mdstat showed this Personalities : [raid1] md124 : active raid1 sda1[0] 4193268 blocks ...
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285 views

RAID 0 (stripe) set can not be booted. `write same failed` error

I have a Dell precision T5400 workstation with a Dell hardware SAS raid controller and 2 SAS drives in striping. Since kernel 3.9 was released I seem to be unable to boot properly and get a "Write ...
4
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1answer
2k views

Why can't RAID 0 utilise all disk space on two different sized disks?

To quote the Wikipedia article on RAID: A RAID 0 can be created with disks of differing sizes, but the storage space added to the array by each disk is limited to the size of the smallest disk. ...
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154 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
209 views

Replacing a disk in RAID1 on a mac 10.8 system

What is the proper and safest way for replacing one of the disks in a RAID 1 array (mirrored) on mountain lion? Both disks are currently OK but one of those drives is much older than the other. ...
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214 views

Documentation for mdadm bad block support

I've read a bit about that mdadm (and the kernel) now have bad block support but I am having a hard time finding any useful documentation on this subject. Is the bad block list for disk X duplicated ...