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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emulating an installed win10 on a raid0 volume from ubuntu

first of all setup: 2 ssd in raid0 set up from my motherboard (intel z97 + i5 4690k + amd r9 390); on this raid0 i have installed a copy of win10 64bit with his own bootloader 1 wd hdd with a copy ...
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29 views

Raid 0+1 on only 2 disks

Is it possible to configure 2 disk to have the redundancy of Raid 1 and the speed of Raid 0 ? In a way like this: Disk 1 Disk2 ---------------------- Data 1 Data 2 --> Raid 0 ...
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7 views

Running mdadm raid 6 with bcache layer on top. The raid had 6 drives in it and then an ssd for bcache

Output of /proc/mdstat Personalities : [raid6] [raid5] [raid4] md0 : inactive sdd1[1] sde1[2] sdi1[5] sdb1[0] sdc1[6] sdh1[4] sdg1[3] 13673677416 blocks super 1.2 unused devices: This raid ...
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33 views

What cannot have redundancy\high availability\failover in a server?

I know some big companies such as IBM, Amazon, and governments require a high degree for availability and data retention with their servers. To achieve this they use redundancy. My question is, what ...
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27 views

ZFS hot spare not working

I have the fallowing ZFS test pool setup in my vm: NAME STATE READ WRITE CKSUM pool DEGRADED 0 0 0 mirror-0 DEGRADED 0 0 0 sdb ...
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13 views

Restore non-RAID Partition's image into a RAID partition

I have Windows 10 installed on a Primary partition (non-RAID).( Windows is installed on 1 Partition only ) I create a backup of this partition. After on the same Pc , i create a structure RAID-0 with ...
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16 views

Raid only half a Disk on 2 Disk Synology NAS

I currently have a Synology DS215j 2Bay Nas populated with 2x4TB Drives using Synology's SHR (similar to RAID1), and therefore 4TB of redundant storage. There are 2 categories of Data on the Nas: "...
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49 views

Mounting raid5 disks without one of raid's member

I have to read data from disks, which are raid5 members. I'm wondering if there is posibility to read data from those disks somehow, but one of those disks is just broken. I was trying to mount some ...
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19 views

Moving Raid Array from Linux to Windows

So, I have a bit of a long round about question here.. TL;DR: How do I check the file system format of an unrecognized drive in Windows? I had a Linux Mint 17 media server setup with a RAID1 ...
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14 views

Buffalo Linkstation NAS (LS-CHL) died, trying to recover data from disk

I have infamous Buffalo Linkstation (LS-CHL) NAS which had one 500GT disk in it. And one day it started to flash red lights and not responding over the net. I tried to put it in different "recovery ...
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20 views

Calculate usable storage space with different size drives in Windows Storage Spaces?

I'd like to create a parity storage space in Windows 10 with a 5 tb disk and two 3 tb disks. Is there a way to calculate how much usable space this will give me?
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35 views

How would one Raid 0 two ssd's and effectively back them up to a HDD

So I've read a lot of similar questions, both here and elsewhere, and none of them quite answer my scenario. I have 2 500GB SSDs and 1 1TB HDD. What I would like to do is RAID 0 the SSDs into a 1TB ...
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20 views

Adaptec 1220SA RAID 1 degraded - should I try to rebuild?

I've got an old Windows 8.1 PC with an old RAID 1 array and a very low-end Adaptec 1220SA RAID controller. Adaptec Storage Manager (screenshot #1 below) shows one drive failed, the other OK. There's ...
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21 views

How to Know the Progress of RAID1 Rebuild on Windows?

I have just installed Windows 10 on my RAID1 array which has 2 disks. And I'm now doing some tests. I unplugged one disk and booted into the OS, then replugged it back, and restarted. Now I see the ...
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5 views

How do I setup a Techus N7700PRO NAS with 7 x 1TB disks for redundant cloud file storage on my network? (Never used a NAS before)

I was given a Techus N7700PRO with 7 x 1TB WD Caviar Blue drives in it all in healthy condition. Crazy good score, right? Problem is I've never setup a NAS before and I basically want to make myself a ...
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42 views

Convert FreeBSD ZFS two-disk unmirrored pool to mirrored

I have a storage pool aptly called storage with two disks in it. Originally, I wanted to add the second disk as a mirror but did the ZFS newbie mistake of using zpool add storage <device> ...
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24 views

Creating a “virtual” RAID 0 on top of two drives in Windows?

I would like a very fast area for large files to be stored quickly across multiple drives (preferably temporarily). It would be like how a RAM disk takes up memory until you disable it, but across two ...
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28 views

Improving Sequential Writes on RAID5 - Write back to SSD?

I have a RAID 5 array consisting of 3x 5TB WD Red NAS drives. RAID 5 is done via a Dell H710 HW RAID card (LSI 2208 I believe). This is a home setup, and the pool is only really used to save ...
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36 views

RAID 0 - what happens if mainboard changes?

I had an MSI z77a-g41 mainboard with Ocz vertex3 raid 0 configuration. Yesterday, my mainboard stopped booting. It seems something is wrong with the mainboard because there is no video, no BIOS ...
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15 views

Ibm V3700 SAN / Howto add additional disks in existing pool [migrated]

We have IBM v3700 San Storage(300gb x 36 SAS HDD) connected to Four servers (windows 2008) via FC. Each server have few disks allocated in RAID5 mode. There are 8 unused (candidate) disks available ...
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76 views

Is it possible to separate SSDs from HDDs in a RAID array?

Is it possible to make 2 SSDs work together separately from 2 HDDs in a RAID array? I have motherboard (ASUS Z170-A) that supports RAID and would like to have a configuration like this: RAID 0 ...
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13 views

CoreOS HP410 RAID1 device not added (-19)

i face problem 'addition failed -19, device not added' > hpsa 0000:07:00.0: addition failed -19, device not added. > HP P410 controller SSDSmartPathCap- En- Exp=1 This hpssacli sees no ...
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13 views

Clonezilla and software RAID array theory

I don't have enough hardware to try this out myself, but since Clonezilla doesn't support backing up software RAIDs, I've been trying to think of ways to backup my RAID0. Since all of the information ...
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9 views

Trouble creating a RAID setup with my Flashdrives

I have been trying to get my RAID to work with my 2 16Gb flash-drives but it does not want to work. For what I have no clue. What are the steps that you have done to get yours working, because maybe I ...
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59 views

Xpenology (Synology) fast read speeds slow write speeds

For 2 years I've used a Xpenology server which has an Raid 0 volume and works perfectly fine. Gigabit read and write whitout any problems. Now am I installing a Raid 5 volume 3x4 tb WD red. I'm not ...
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22 views

Need some more MDADM details

Short version: I am using a RAID1 with hotspare and I want to have a nightly DD ran to create a nightly image on a standby drive. All the drives are the same size/manufacture and local. I am getting a ...
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48 views

My Nas made a JBOD on 2 drives

Thank you for reading this message and helping me. Context: I recently had a NAS (DNS320L) that was faulty and I sent it back. It was a 2 bay NAS and I has a WD Green 1TB drive and a WD Red 4TB ...
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16 views

Xeon linux with Avago Megaraid RAID card

In brief, my problem is how to use linux's mdadm to reconstruct a DDF-format RAID-6 array that has gotten its superblock metadata borked. Here is my tale of woe. I have (had?) a RAID-6 array composed ...
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2answers
51 views

Expand a Linux MD RAID 10 array to use larger disks

From what I understand this is possible, but I can't find a straight answer anywhere about how exactly to go about it, and I don't want to risk losing data experimenting with it myself so I'm asking ...
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23 views

Trying to mirror a volume

I originally had my HD mirrored to another one, but then it said the plex was missing, so I took it out and checked it and it was dead. So i bought a 2TB SSHD to replace it. But now it's not letting ...
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32 views

External HDD is causing second drive to unallocate (disappear)

I am running Windows 7 x64 and have two drives, C and D. D is within a RAID array running under Intel Rapid Storage Technology (IRST). The external HDD in question is a CN Memory Spaceloop 2TB 3.5'' ...
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120 views

Linux BTRFS - convert to single with failed drive

A small amount of backstory: I have a small media filesystem, on which I store various movies and TV shows that are used for my HTPC setup. This was originally set up, using btrfs, on a 1TB WD ...
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63 views

Boot from btrfs RAID5/6?

I'm trying to build an Arch Linux system with a btrfs RAID5/6 root. When I install GRUB on one of the volume's disks, it prints a message like this on startup: error: no such device: [my btrfs volume ...
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how do i shrink or reduce my raid array size

i have raid array md0 which is close to 5TB. i need to shrink this size so as to overcome the rebuild times when i test fail the drives. is there a tool/command that can help me to reduce the array ...
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93 views

Boot from old hard drive

The motherboard of my old computer died suddenly and so I bought a new computer. It has two 1TB HDDs on RAID 0 and comes preinstalled with Windows 10 Home. I wanted my computer to boot from my old ...
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79 views

Re-installing Intel(R) Rapid Storage Technology Driver

I just updated my bios on my MSI motherboard to the latest version without really thinking about the repercussions. I had the BIOS version of Intel(R) Rapid Storage Technology Driver installed on my ...
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12 views

RAID 6 Resync after system crash

I am running a home NAS server for data storage using linux (ubuntu) and RAID 6 configuration (using MDADM), however, occasionally the server crashes/hangs or experience a power-outage/interruption of ...
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28 views

Adding a parity drive to a RAID-Z1 array

Can I create an array as a RAID-Z1 and then later add another pairity drive to make it into a RAID-Z2? I’ve got 4TB of data on a drive I’d like to add into an array that I’m building out of fresh ...
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16 views

Recover Data Using Synology NAS

I bought a Synology DS415play around 2 years ago, and plugged 3x 4TB hard drives into it and set them up as a Synology Hybrid RAID. I've been using it to store my media on it and haven't touched the ...
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92 views

Linux mdadm does not assemble array, but recreation of array does it

Maybe i'm not very clear in the title. When i'm trying to assemble my raid1 array with mdadm: sudo mdadm --assemble /dev/md0 /dev/sdc /dev/sdd It tells me that mdadm: Cannot assemble mbr metadata ...
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15 views

mounting a RAID array on a machine with conflicting device name

I have a machine with the following RAID arrays connected: xxxx@xxxx:~$ sudo /sbin/mdadm --examine --scan ARRAY /dev/md/0 metadata=1.2 UUID=6c2e2072:4db41563:d93a9ae5:dfb29ffd name=xxxx:0 ARRAY /dev/...
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13 views

Using storage spaces like raid 0 + mirroring?

I have a few drives I'd like to use but I'd get more space out of them if (this assumes its possible) I could set the two smaller drives up like raid zero, then have the "raid 0 drive" mirror a x3 ...
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64 views

Is using multiple SSDs in RAID 0 good for reliability?

I'm asking this because, unlike HDDs, the main lifetime limiting factor of an SSD is write cycles. By using RAID 0, it's effectively doubling the amount of write cycles usable, and theoretically ...
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30 views

Failed Redundancy Error on Windows Server 2008 Mirrored Volume

So I helped a friend set up a home network. He has a Windows Server 2008 server with multiple disk drives set up. These drives are mirrored. Somewhat frequently the Failed Redundancy error pops up. ...
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33 views

Migrate MDADM array to another server with degraded state

I've been hacked few days again and, after analysis, I want to have my data back ! My previous server (the one who contains data on RAID1) have been compromised so I've decided to go with another one....
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Does URE apply in non-RAID setups?

According to this article (http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/) if you have a RAID 5 setup and one of your drives decides to die you would replace the dead one with a new ...
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Deploying Raid 0 on an existing setup

I have a server that's already in deployment and will be adding on a new hard drive. Redeployment isn't really an option because the server is a quanta server and doesn't can't support a KVM. ...
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228 views

GA-Z170X-Gaming 7 or GA-Z170X-Gaming G1 (2x M.2 NVMe) + SATA

I have been considering building a new system with dual Samsung 950 NVMe SSDs and I am slightly confused about how the firmware on GIGABYTE supports this setup. Reading the manual for the Gaming 7(...
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14 views

Raid 1 with motherboard change

I currently have 2 x 1Tb HDDs configured as Raid 1. I want to upgrade my mobo and processor but am worried about still wanting Raid 1 with the new mobo. Is this possible with HDDs loaded with data ...
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43 views

Unable to UEFI boot once RAID is enabled

I have the current drive setup. 1 SSD that holds windows, 2 smaller SSD's that are RAID0'd and 1 platter drive. When I installed windows 10, all was good and things were booting fine. After a BIOS ...