Redundant array of independent/inexpensive disks; a technology which utilizes multiple disks to provide increased reliability, performance, and/or redundancy. Can be implemented either in software or with a hardware controller.

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Adding a device with data to a RAID0 config

If I have a device mounted in RHEL, how do I add another device to it and make it a RAID0 config? I know how to mount two new devices in a RAID0 config, but how do I do it with one device that is ...
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93 views

Folder Size 18.7gb but Size on disk 1.33TB - why/how could this have happened? Synology DS212 NAS RAID

To start - I am way out of my comfort zone trying to fix this problem but I am not sure what else to do! We have (2) 3TB hard drives in a Synology DS212 NAS RAID and are constantly running into ...
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1answer
146 views

How can I add a second hard drive to mirror the first one in RAID?

I have a HP ProLiant Gen8 MicroServer with a Hardware RAID Controller. The model is Dynamic Smart Array B120i/ZM. I currently have a single hard drive mounted. I would like to add a second identical ...
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61 views

Windows Mirrored Volume Failed

I have had a mirrored volume working in windows 7 for a few years now, and its been fine. I recently built a new pc with windows 10 and moved both disks(mirrored volume) over to the new machine. When ...
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63 views

Reboot Windows 7 remotely, stuck at Windows Boot Manager screen

I have set up a windows software RAID on my Windows 7 PC. I want to remotely reboot the PC, but when I do this it gets to the following screen and waits for user input: I can't see any countdown ...
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2answers
25 views

Raid 1 with two hard drives, which hard drive will overwrite the other?

I have two hard drives in a raid-1 volume that Windows 7 boots from (let's call them harddrive-a and harddrive-b). I got a third harddrive-c so that I could install Linux. To protect my Windows ...
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1answer
26 views

Is it possible to create striped array (RAID 0) with two parts on two disks (Windows 7)?

I have 2 physical disks. Part of one disk is occupied by Windows 7. I have two not allocated parts on these two disks of equal size. Is it possible to create striped array (RAID 0) with two parts on ...
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4answers
617 views

How to upgrade SSD firmware on Intel RST RAID 0 member disk?

I have a random bunch of SSDs working in an Intel Rapid Storage Technology RAID 0 to serve as my system drive. To setup an Intel RST RAID drive, in UEFI one must change the SATA controller to RAID, ...
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57 views

Can Windows 7 make good (high performance) use of RAID 1 between a SSD and a HDD?

Recently my hard drive died, and I lost all my files and I am really sad. Right now I am making a software 1 raid between my 2250MBps/1850MBps Pcie 3 8x SSD, and my 1TB 170MBps/170MBps hard drive. ...
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46 views

Change one disc to AHCI

I have one SSD that I'd like to use in AHCI mode, and two discs in RAID mode. Right now all discs are in RAID - the SSD, and two HDDs. I would like to change only one of them to AHCI? I found in the ...
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219 views

M.2 SSD Raid with PCI-E or SATA

I have recently bought Intel i7 6700k, Asus Maximus VIII Hero and Samsung EVO 850 M.2 SSD. I want to use SSD as a cache drive. So, I enabled RAID mode from AHCI. In BIOS there's this option: M.2 ...
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18 views

Dump all data to just one disc

Right now I have two HDDs set in RAID-0, each having 1TB. And I bought SSD drive that I want to connect right now. The problem is that I only have two SATA connectors. I have power connector, but not ...
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164 views

Windows Server 2012 R2 RAID 1 setup?

I currently own a computer that has Window's Server 2012 R2 at home. I am a Student and how I got Window's Server 2012 R2 was through dreamspark. Today I have a question. Currently I am only running ...
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2answers
87 views

Reallocate space using parted (no gui )

I'm running a Ubuntu server 14.04.3 LTS. The partitioning has been created automatically and now I have a problem with root directory space. There is a raid /dev/md3 with almost 2 TB free and a /dev/...
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83 views

Resume btrfs balance after interruption due to ENOSPC

I'm building RAID5 out of 3 devices (3.7TB each). I run: btrfs balance start -dconvert=raid5 -mconvert=raid5 /mnt/storage0 and it did process 3471 out of 3472 (sic!) chunks after which it failed ...
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157 views

Having SSHD while using an SSD working on AHCI mode

So I have an SSD working on AHCI mode. I'm planning to add an SSHD to my rig, so the question is do I have to change SATA controller to RAID mode when I got my SSHD? (to enable its Built-in SSD ...
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0answers
285 views

How to reformat a hard disk that was previously in a RAID configuration?

I have 2 internal Seagate SATA hard disks that were, at evidence as far as I can judge, mounted in a RAID configuration. These disk have been given to me and were used on another computer. The 2 disks ...
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103 views

Convert boot hdd to RAID 1 array

I've added another hdd to my 'server' since I wanted to clone it using RAID. I've read several articles about converting an existing filesystem to a RAID 1 system. They all use software, and I want ...
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58 views

Growing mdadm array; Cannot find backup file on FS where it's supposed to be

The situation: I am currently growing my RAID-6 array from 4x4TB to 5x4TB. To achieve that, I used to following command: root# mdadm --grow /dev/md0 --backup-file=/root/backup/raid/4d_to_5d --raid-...
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3answers
82 views

Is RAID 5 still a viable option?

Without writing to much: Is RAID 5 still a viable option in systems > 10TB space. I can handle some hours or maybe 1,2 days of recreation/extending - but more than that would be a pita. I want to ...
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144 views

Access RAID hard disk drive externally on Windows 7 or 8

We are using Iomega StorCenter ix2 for making our backup. Unfortunately last week it stopped responding and accessing. Earlier I was able to ping the device and only able open it through browser, but ...
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239 views

Installing Centos 7 with Dell Poweredge 1800 with PERC4/SE RAID

I have a Dell PE 1800 with Perc4/SE controller - 5 SCSI drives. I need to install Centos 7 x64. Centos 6.7 x64 installs fine, but the RAID drivers have been removed from Centos 7. I need Centos 7, ...
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125 views

Three Disk RAID0+1 Array with BTRFS

Would it be possible to have two or three disks in a RAID0 array and have a separate disk that is as large as the RAID0 disks combined size for pairity? Or, would it be better to just RAID0 the ...
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1answer
352 views

Retiring disk in Simple Storage Space (Windows 10)

I'm banging my head against the wall trying to work something out with Windows Storage Spaces (WSS). Here's what I'm up against: I have 2 250GB drives in RAID1 (OS Drive), 2 3TB drives and 12 1TB ...
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47 views

Recover mdadm Raid5 array after one drive failure

I've been working through a number of posts on this issue but want a sanity check before trying to find a way to reassemble this array. I have a Mint 17 build with a raid 5 array for data storage (...
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1answer
37 views

software or hardware RAID 5 for home server? [closed]

I have seen a few similar questions here but they are all years old and since the technology landscape is so volatile I thought it best to start afresh. Plus, few of them speak specifically to raid 5. ...
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1answer
39 views

Any advantages of having Raid0 with single drive?

Are there any advantages of having a Raid0 configuration with a single drive? Both Intel controllers and LSI controllers I'm using allow for Raid0 creation using a single drive. Is there any ...
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1answer
366 views

How do I fix the system tray icon for Intel Rapid Storage Technology?

I have the Intel Rapid Storage Technology icon enabled: But I don't get it in my system tray. I am not in Safe Mode. The problem is when it starts verifying my RAID array and I have no way of ...
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3answers
1k views

HP Smart Storage Administrator CLI hpssacli “Error: No controllers detected.” on Ubuntu Server 14.04.1

I've successfully installed Ubuntu Server 14.04.1 LTS on the HP Microserver ProLiant Gen8. Before installing, I booted into the Intelligent Provisioning and set up a RAID 1 with two disks. During ...
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32 views

Software RAID setup on an MBR drive

In Mike Meyers' CompTIA A+ book when talking about different partitioning schemes, he says "A dynamic disk volume is still technically technically a partition, but it can do things a regular ...
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1answer
22 views

RAID0 ; Need to restore configuration

I have a Dell Poweredge workstation with Ubuntu server installed in it. Hard disks are configured with RAID0. While using the RAID controller setup (after restart), I removed one of the six hard disks,...
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1k views

How do I disable Intel Rapid Storage Technology?

After googling for a long time, I also posted this question on Quora but I'm not sure I'll get an answer. So sorry for double posting this question. I have a very nice MSI gaming laptop with a 250GB ...
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1answer
26 views

How to set raid on lvm in Debian?

I have 3 hard disks with lvm installed and I have 2 Logical Volumes created with lvm. I want to make a raid with theese two logical volumes. Is it possible? Like this scheme: /etc /var /home ---------...
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3answers
430 views

How to replace SSD boot disk when computer has RAID 1 data disk connected to it in Windows 7

I am current using a computer (Intel I7) with a 60GB SSD and two 2TB drives in a RAID 1 configuration. The 60 GB drive has the Windows 7 operating system on it and the RAID disks are used for data. I ...
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1answer
64 views

Doing RAID 1 on Mac OS X

After doing some research about RAID options and benefits I'm thinking (or shall I say - curious) of doing RAID on my two SSDs. In Disk Utility it allows me to do "Mirrored RAID set" (RAID 1?), "...
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39 views

RAID 5 showing two disks in same slot

We recently had a power failure for a few hours and when the power came back both my RAID arrays failed. The one I am trying to fix is a RAID5 with 5 disks (I also have a RAID1 with 2 disks, but I ...
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43 views

How to terminate mdadm check

I have a hypervisor with several disk arrays that are used as a backend storage for VM's running on it. Now I see that number of VM's have significant performance issues with disks. It seems that ...
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0answers
149 views

installing fedora 21/22 on a raid?

i created a RAID0 device on two disks using mdadm --create /dev/md0 --level=stripe... when i boot the fedora 21 installer, i can see it mounting and dismounting that raid on the console 4 log (...
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58 views

Disable intel rapid storage technology screen

I recently installed a second HDD in my Dell laptop. To configure the HDD I used the intel Rapid Storage Technology that came with my laptop. But now before windows boots a screen from intel Rapid ...
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1answer
368 views

How to convert a software RAID 1 partition to non-RAID partition?

RAID is not a backup, they say, but only now I can see that what I really need is an (external) backup. So, I would like to convert a (software) RAID-1 partition to a non-RAID partition (ext4) in my ...
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1answer
272 views

mdadm, Device or resource busy when adding sda

Trying to create a raid1 on a live system following this article: http://guylabs.ch/2013/09/17/create-a-software-raid1-with-mdadm-on-an-active-ubuntu-13-04-hard-drive/comment-page-1/ uname =a 3.13.0-...
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0answers
294 views

Promise Pegasus R6 enclosure won’t mount on a Mac

I can’t mount my Promise Pegasus R6 enclosure on my Mac. One day it just disappeared. I can see the drive in disk utility but it can’t be accessed. When I verify the disk is says there is nothing ...
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1answer
117 views

Transfer RAID drives from one NAS to another?

My Patriot Javelin S4 NAS is pretty slow. I’m thinking about getting a new one, but I have about 7TB of data spread out across four 3TB drives in RAID 5 format. I don’t want to have to buy more hard ...
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1answer
131 views

RAID 5 Home use?

I am looking at building a home computer in the near future. This PC will be used for video capture/editing, gaming, and will be running a fairly advanced set of hardware. My question is: Should I run ...
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53 views

Is it possible to revert a RAID 1 operation?

I accidentaly turned a full disk into an exact replicate of another, now I'm struggling to find a way to restore my lost files. Is there any ?
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95 views

File History not working on RAID-5 disks

I have a single hard disk along with a RAID-5 configured across 3 other disks. On Windows 7 I had shadow copies enabled and it worked great. After moving to Windows 10 I realized that File History ...
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51 views

XP unable to hibernate with system installed on LSI controller?

I'm trying to build a workbench machine that will multi-boot all sorts of OSes, one of which will be XP32, SP3. So first up, please don't tell me how silly it is to be installing this nowadays, ...
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3answers
77 views

Raid of single ssd

This is bit of a follow on from my previous question us HP Smart array. Is it possible to RAID a single ssd? What setting will need to give it? What benefits will I have?
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47 views

Missing /grub/stage1 file

My situation goes like this. I have a SW-RAID1 setup on the server. Unforunately, it is only able to boot from device sda, without it. The server will not be able to boot up using device sdb. So after ...
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21 views

Multiple HDDs hanging constantly

I have an AMD Windows 7 system which has its OS on an SSD, and until previously had a single 4TB HDD as a data drive. I never had an issue with that drive until I installed a second 4TB drive and put ...