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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Windows Software RAID 1 - How can I “Offline” both disks at the same time?

I want to disable both drives in my Mirrored Volume setup so that I can mount them in a virtual machine (for testing, no important data is on the drives right now). Offlining them individually breaks ...
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19 views

Software/Hardware RAID vs Windows Storage Spaces for DAS

I plan to upgrade my Intel RST Software RAID1 setup with 2 internal SATA drives to something more versatile: Drives need to be external (they have to reside in an enclosure connected to PC via eSATA ...
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6 views

software raid1 compatible on OSX and Ubuntu on external disks

I'm using external disk dock with two disks and want to setup software raid1 so that the setup works when usb3 mounted from both ubuntu and osx. How is this possible?
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23 views

Raid drive cannot be detected

Only yesterday I bought two new 2GB Seagate drives and set them up as raid and installed lubuntu. It was working fine and there was no problem but today I made the very bad decision of swapping over ...
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17 views

Use 4TB partition with old NTFS-3G which doesn't support GPT and RAID

I've a D-Link Router (2750U) which has a USB port and FTP Server. I've also a 4TB External H.D.D which I want to use as one partition with this Router as my home cloud. I don't want to split this ...
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10 views

Dual boot Win8/Linux on Asus Zenbook UX301 keeping intel imsm RAID0

I have Asus Zenbook UX301 with Win8 preinstalled. I would like to have a Linux installed in dual-boot configuration. However, Windows is using the notebook 2 SSDs as intel RAID0 (rom-based RAID, ...
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2answers
36 views

Which is faster, 2 SSD drives , each plugged into a sata 6 port on RAID 0, or 1 SSD drive plugged into a sata express port (10gb)

I have a new motherboard and it has 1 sata express port that's up to 10gb transfer. So I'm wondering which would have better performance? 2 SSD on raid 0 in a sata 6 port or 1 SSD on a sata express ...
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35 views

Hardware RAID10 HPA recovery

I have a hardware RAID 1+0 based on external CFI-B8253JDGG DAS. It was connected to PC with eSATA and contains 4x1TB HDD (Total capacity is 1.82TB in RAID10). Some days ago I tried to connect the DAS ...
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6 views

TestDisk failed in Deep Search?

I'm trying to recover data from a colleague's 4TB external G-RAID drive. I've saved the main partition from the quick scan result, but that didn't help, so i spent the past week doing a Deeper Search. ...
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12 views

Parity errors after verify with Intel RST

I have Intel RST RAID 1 running on a Windows 7 machine. I have it set to do a verify and repair every week. I frequently notice parity errors, some weeks over 100 for a 1 TB RAID 1 array. I've ...
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28 views

RAID 0 speed improvement

I've got a free Samsung EV0 840 120Gb from my uncle. I already got a 250 EVO 840 in my computer. Now I was asking myself if I got a significant speed boost if I put them in RAID 0. I know the total ...
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No extents were found for the plex, when setting up Soft RAID 1 with RAID 5 on Windows Server 2012

I did find a similar question on this, but it did not really answer my question or fix the problem, so i'm starting up a new questions on it. This is my setup now: You can see if i have RAID 5 ...
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23 views

Correct kmod-megasr driver to install CentOS 7 on Intel Embedded RAID Technology II?

I am trying to install CentOS 7 on a server using RAID 5 on Intel Embedded RAID Technology II. I did need to install a special hardware key to unlock the RAID 5 feature. I have succcessfully ...
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20 views

Missing Operating System Win 7 RAID 0 setup

I have 2x1TB RAID 0 setup on an Asus P8Z77-V PRO Motherboard.Coming out of BIOS my PC just went to a blank screen "Missing Operating System". I have tried booting from the original Win 7 disk, ...
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21 views

Should a Linux Swap partition be on the RAID?

When setting up a new system, if I am planning on mirroring two hard drives, what should I do with the SWAP area? I can think of three things I can do... Do a mirror of the SWAP partition Stripe it ...
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22 views

Optimal load balancing between two hard disks. Does RAID 1 do the trick?

I am looking for a linux disk system for streaming media purposes that would do smart load balancing and minimize hard disk wear. To illustrate my points, lets take a physical hard disk device and ...
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24 views

Re-enable Windows 8.1 software raid 1

After re-installing my Windows 8.1 OS, not suprisingly, the software RAID 1 (mirror) does not work. In Computer Management -> Disk management there's a red X over a "no named" volume, with status ...
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12 views

btrfs not distributing data to smaller disks in 4-disk RAID1 array

I have a btrfs filesystem composed of four disks of sizes 3TB, 3TB, 1TB, and 1TB, configured in a RAID1 (data and metadata). I've noticed that btrfs doesn't seem to want to use the smaller disks at ...
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32 views

How to access access virtual raid drives created by another linux system that died

I had a server, red hat 6.4, that had 2 raid systems connected to it, but then the server suddenly died. I connected one of the raid systems to another linux system with centos 6.3 after installing ...
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4answers
59 views

Is raid 1 overkill for a home user

I'm looking to centralise my home data - pictures/videos/music and so I have ordered a synology ds214 and a couple of 2tb drives. Since I've been doing my research I've come to realise that mirroring ...
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30 views

What are following sata raid drivers for?

I've been installing raid 1 based server and the first time i did it. I didn't know which one to choose to I chose at random (I think ICH7R/DH one). Everything worked, but disk access times were ...
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31 views

Mirror Raid to Single Harddisk ACPI BIOS in the system is not fully compliant with the ACPI

My server used to be setup as a Mirror which means the 2nd harddisk would take the image of 1st harddisk. In anycase 1st harddisk is dead, 2nd harddisk would take over. It wasn't setup by me & ...
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65 views

One 4TB hard drive or two 2TB in RAID 0 – which gives better performance? [closed]

I’m looking into getting a new Synology NAS and looking at these two options for hard drives: 2 bays: 1 x 4TB - file system (video, music, private cloud) 1 x 4TB - daily backup 4 bays: 2 x 2TB ...
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49 views

Fix Intel RAID0 array, one of disks has bad blocks

I've got an issue with a firmware Intel RAID0 array. It consists of 2 disks 500 GB each. The second disk has several bad sectors, and I can't remap or hide them (they are 8 LBAs or 4096 bytes). I ...
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24 views

recover data from a previously RAID 1 drive?

Normally it's a drive that fails, but in this case it was my motherboard (I think). System is completely dead. It was a Dell XPS420 with a Intel ICH7R Matrix RAID controller on the motherboard. ...
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28 views

Dynamic disk mirror broken after motherboard replace

I have a desktop computer which was setup as follows: Windows 7 Pro 16gb ram Phenom II CPU GA-880GM-UD2H motherboard 2 x 120GB Kingston SSD in (fake)RAID-1 (boot drive) 2 x WD-3000 3TB hard drives ...
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37 views

chunk, ext4 stride and strip-width size for RAID level 1?

the man page for mdadm says: "[chunk] is only meaningful for RAID0, RAID4, RAID5, RAID6, and RAID10." i.e. it does not apply for raid1. even if you pass the value, it will say "ignoring chunk size" ...
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1answer
25 views

How to create bootable CentOS7 USB drive with FakeRAID drivers?

I have a few older servers that only have one available USB port, and no CD-ROM drives. I have successfully created a bootable thumb drive using dd to copy the CentOS-7-DVD isos to thumb drives, but I ...
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26 views

Replacing an Imminent-Failure Drive in a RAID-0 with Clone

The RAID-0 in question is run by an Intel RAID controller in a Gigabyte Z77X-D3H. It is a 2x320GB RAID-0, comprised of two different model drives. The working one is a 320GB Western Digital (whose ...
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Feasible to have a RAID of RAIDs

Having a RAID can increase speeds and redundancy. Can a RAID be made using other RAIDs as "disks"? This could further increase performance and redundancy. How many levels can you go?
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Implement backup strategy in cloud with a slow connection (around 150 GB)

I want to implement a backup strategy based in cloud to prevent data lost by disasters. Scenario: Proliant Server ML350 1X136GB (Windows 2008 installation and applications) 1x136GB (Applications ...
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16 views

Failover of Windows Storage Spaces

I am building a home server with an HP Microserver hardware. I installed Windows Server 2012 Datacenter on it. In order to take advanced of data protection, but without spending large money for a ...
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64 views

Alignment with RAID-6 (mdadm) + LUKS + XFS

What I want: I have a 4x4TB RAID-6 array with mdadm. I want the storage to be encrypted and plan on using LUKS. I will most probably use XFS as filesystem. I will add more disks to the array as ...
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1answer
29 views

Need application to run without root access

i try to build my local services system inhouse, and to thant i need to learn how i can give access to a single user with out type a root access when i do it, or i need to know how i can call the ...
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disable driver signature check while installing windows 7 [duplicate]

is there any possibility where i can disable the default driver signature check while WINDOWS 7 Instalation?. My problem is that: i had bought an asus mobo with inbuilt AMD raid card and i want to ...
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1answer
55 views

Install grub raid1 & lvm

I have installed an Ubuntu Linux on a machine where there was a RHEL (from Dell) At the end of the installation I got a message that GRUB2 could not be installed. So I booted into a Live Linux (from ...
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Recovering data on 20TB RAID 5 NAS, overwritten by 500gb RAID 1

I have a Linux gateway with 2 500gb drives in software RAID 1 for system. /dev/sda = RAID 1 /dev/sdb = RAID 1 /dev/sdc = RAID 5 (NAS 12 drives iSCSI, /home directories) While replacing sdb, weird ...
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Is it possible to restore RAID data when a RAID restoring process was crashed?

I have a 4 HD RAID. One of then was crashed and during the restoration process another second one HD has crashed too. This is very improbably but it happened. So, is there any software to recovery my ...
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29 views

Degraded RAID 5 array, can't add replacement drive

So I've had two drives that have been marked as faulty spares in my RAID, I've removed them then I tried to --force assemble the RAID but this came up - mdadm: /dev/md0 assembled from 2 drives and 1 ...
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1answer
77 views

ZFS (RAID-Z1) or “hardware” (RAID 5) on Linux system?

I have never put together a RAID array before, but i think i understand the concepts behind most raid types from my reading. Ordering three 3TB drives (WD red) to use in a xeon e3-1231 v3, 16GB ...
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82 views

RAID 0 now showing as “unallocated”

I have a 6TB RAID 0 consisting of 2x3TB WD Red drives. It's been working fine but recently I went on my PC (which was still turned on and had been for a few weeks) and the whole partition was showing ...
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1answer
14 views

mdadm build legacy array on boot

I have RAID0 that was built using windows dynamic disk. I've read that this is a legacy array and can be assembled using build in mdadm. I've gotten the array to build and mount using the following ...
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33 views

Multiple PCIe Controllers

I am trying to exceed the 6Gb/s barrier of SATA3 I want to use RAID 0 on multiple SSD's and I am trying to come up with a (relatively inexpensive solution) I have 40 available PCIe lanes /16 are being ...
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28 views

Create Degraded RAID 1 in Windows 7

Question is simple. Can one create a degraded RAID 1 in Windows 7? In other words specific to a hypothetical situation, can I have a backup drive with backup data on it, then buy a second backup ...
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how to mount a XFS filesystem in LVM volume with RAID0 having a bad disk?

I have a small NAS with two 500GB disks in a RAID0 (JBOD) setup. (I know, I know, big mistake... as you will see...) Now, one of the disks started to fail (Murphy is always right, isn't he...) I ...
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38 views

How do you back up a RAID 5 server?

I see many information on how to back up single drive, transfer information, or even use the dd command. Originally, I had a 1 disk server, and when I migrated it to a higher end server, I went ahead ...
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1answer
11 views

re-assemble out-of-date raid5?

I need help with my raid5 after it crashed through bad sectors. Previously I could re-assemble it with # mdadm --assemble --force -v /dev/md0 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 but ...
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1answer
58 views

gparted live CD won't move/resize unmounted partition

GParted live will not allow me to resize/move partition /dev/sdb5: No other windows (such as error dialogs) appear. The partition is part of a RAID device, but I stopped all raid devices before ...
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68 views

Are RAID 5 systems suitable for larger disk sizes? [closed]

Why is it generally considered that RAID 5 systems are not suitable for larger disk sizes? Is the same true for RAID 6? Reference: http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/
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Mirror new HDD with old (raid 0) HDDs

So after fighting every day with my slow 3TBx2 Raided HDDs I decided to get a new one that's just 4TB (as I don't use more than 2TB currently). It's a WD Black HDD that looks really promising. ...