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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4
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2answers
2k views

Windows 8 wrongly detects my Raid1 HDD as Solid state disk

I have upgraded my machine from Windows 7 to Windows 8 and then Windows 8.1 (this is the only available upgrade path to keep my files, settings AND applications). My system is setup as follows: 2 x ...
0
votes
0answers
6 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 ...
0
votes
1answer
16 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 ...
0
votes
2answers
547 views

mdadm one disk sometimes is missing after reboot

On a debian system my home directory is on a raid1 md array. After creation it worked fine for some time, but once the second drive disappeared from the array. # cat /proc/mdstat Personalities : [...
1
vote
1answer
1k views

Intel RAID verification and repair

Intel has a web page that describes how its Rapid Storage Technology verifies and repairs RAID volumes. For RAID 1 and RAID 10, it does the following: Data on the mirror is compared to data on ...
0
votes
0answers
10 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 ...
0
votes
1answer
3k views

Cloning HDDs from a hardware RAID array?

Is it possible to clone the individual disks of a hardware RAID to get a copy of the contained array? I have an Adaptec RAID controller. I put it offline, attached the RAID member HDDs to a regular ...
0
votes
1answer
32 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 ...
0
votes
0answers
6 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 ...
11
votes
5answers
24k views

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 ...
0
votes
0answers
20 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 ...
1
vote
0answers
541 views

SSD TRIM support on RAID-1 array through Intel RST

I'm making the jump from HDDs to SSDs on my home desktop, and I'd like to retain a basic level of redundancy (RAID-1) like what I have with my HDDs. Right now, I'm using Intel's RAID controller on my ...
0
votes
1answer
38 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 ...
0
votes
0answers
10 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 ...
3
votes
2answers
4k views

Very slow volume expand on Synology ds2413+

I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found. I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
0
votes
0answers
11 views

Expanding storage on a soft RAID10

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 ...
0
votes
1answer
69 views

How to encrypt 3 drives on linux?

I have 3 x 3TB drives and a linux computer and i want to use the space as "one" drive for music, movies, and pictures (home server). In Addition the stored data should be encrypted. I do not want to ...
0
votes
0answers
27 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'' ...
0
votes
0answers
18 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 ...
0
votes
1answer
56 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 ...
22
votes
3answers
17k views

Intel Matrix Storage Manager vs Linux Software RAID

The chipset I'm using supports the Intel RSTe technology. It means that I have two options for RAID setup: Ordinary linux software RAID, using mdadm command. RSTe (either by the BIOS or, again, ...
1
vote
1answer
6k views

Synology NAS station - how to mirror 2 HDD (Simple how-to)

I have the following problem with my Synology disk station: I had one small HDD in Synology Diskstation, so I removed it. I bought 2 new HDD with the same capacity. I transferred backup from old ...
0
votes
0answers
13 views

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 ...
1
vote
0answers
73 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 ...
0
votes
1answer
68 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 ...
0
votes
0answers
57 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 ...
0
votes
0answers
28 views

Need to parse error logs and set up an alert system on a remote Windows computer [closed]

All I need to set up an alert system that can tell me when a hard drive has failed in a remote computer system. I manage approximately ~10 Windows 7 machines and they all have LSI RAID cards with 3+ ...
-1
votes
0answers
14 views

M2 SSD For OS and 2 x SSD for general usgage - can i create redundancy here for the os?

i was getting a little confused reading through the site, as i am new to raid etc, what i wanted to do was use a m2 ssd for the os and 2 ssd drives for NON os creation, ultimatley can i create a ...
0
votes
0answers
10 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 ...
30
votes
7answers
67k views

How can I make mdadm auto-assemble RAID after each boot?

I successfully created a RAID (mirroring) by utilizing mdadm. However, I must run the following commands after each boot: mdadm --stop --scan // to stop /dev/md127 - I don't know where the number 127 ...
1
vote
1answer
21 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 ...
2
votes
2answers
912 views

Recover Linux software RAID5 array after server upgrade

I recently upgraded a server from Fedora 6 to Fedora 14. In addition to the main hard drive where the OS is installed, I have 3 1TB hard drives configured for RAID5 (via software). After the upgrade, ...
0
votes
0answers
32 views

Make fixed USB drives dynamic disk

So at the moment I'm trying to RAID0 a pair of USB sticks I have. They show up in Disk Manager as Fixed Disks because of some driver filtering and it allows me to create a new striped volume, but at ...
1
vote
0answers
14 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 ...
0
votes
0answers
50 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 ...
0
votes
0answers
12 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/...
0
votes
0answers
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 ...
2
votes
3answers
9k views

Can I run multiple RAID arrays on a single RAID card?

I"m looking to buy a hardware RAID card for my Linux computer which I'm building, and I'm specifically considering this Intel model. I'm planning on running multiple RAID arrays in my computer: a ...
0
votes
0answers
27 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. ...
0
votes
0answers
28 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....
0
votes
1answer
714 views

Kubuntu 11.10: Random IO errors on HDD in RAID1 array. RMA time?

I'm pretty sure I have a failing HDD here, but just want to make sure it's not some software error before I do the whole RMA song and dance routine with Western Digital. Bascially, I have a <6 ...
2
votes
2answers
7k views

HDD & SSD Linux: Hard resetting link

my current storage setup consists of two traditional HDD's and two SSD's in my Linux box, each two on their own RAID 1 array which is encrypted via luks. I have a story of sorts, rather than a ...
0
votes
0answers
15 views

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 ...
1
vote
0answers
12 views

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. ...
1
vote
1answer
99 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(...
0
votes
1answer
56 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. ...
17
votes
3answers
15k 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 ...
0
votes
0answers
12 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 ...