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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225 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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1answer
95 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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54 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
81 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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1answer
99 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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218 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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1answer
120 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
327 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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45 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
37 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
316 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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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
21 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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972 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
24 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
385 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
63 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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37 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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0answers
42 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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142 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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56 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
319 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
258 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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273 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
106 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
124 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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1answer
52 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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0answers
92 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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49 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
73 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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46 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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0answers
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 ...
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38 views

How to disable creating device nodes of ldm disks in ubuntu?

Yesterday I've installed ubuntu 14.04 to my mother's home computer. That's really good deal, but she uses windows too to work with documents. This documents is placed on the Windows dynamic disks in ...
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1answer
33 views

RAID 0 disk failure,how much Recovery chances?

I had a RAID 0 with 8 disks. One of the disks failed. Is there any possibility to recover data from the remaining 7 disks?
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1answer
215 views

RAID Disk failure - one per day (3ware 9650SE - Seagate Barracuda 3TB)

I have a RAID6 config, with 3ware 9650SE-8LPML card and 6x Seagate Barracuda 3000GB running from early 2012 (May?). Those HDD were quite big for that time. They always made a strange noise when ...
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1answer
26 views

Which is faster: write two big files to separate hard drives, or write them to the same set of drives in Raid0

This is sort of related to the answer here: http://superuser.com/a/325771/396863 Let's say I have a two 1 gb files which I want to simultaneously write to my hard disks. As noted in the linked answer,...
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1answer
82 views

Assemble 3 drive software RAID5 with one disk missing

Is it possible to assemple a three drive software RAID5 with only two disks? I have one failed disk in my setup which i could not read at all but the two other disks are fine. So i created a dump of ...
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98 views

File/folder or program (SQL data) access becomes slow in network from the server- network connectivity issues in the newly upgraded server

Info: New server configuration is as follows Server chassis: CHENBRO CHASIS Model: RM-41416B Motherboard: Intel Server board S2600CP4 Processor: Intel XEON E5-2630 V2 (Single CPU) RAM: 8GB RAM ...
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1answer
123 views

BTRFS, Files on a single drive in array but keep 2-parity?

Is it possible to setup a BTRFS array of disk but tell it to keep files on individual disks instead of stripping them and still keep a 2-parity? The idea is that if three drives die, the files on the ...
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0answers
8 views

Will plugging in additional hard drives when RAID is enabled in the BIOS mess up the drives?

My girlfriend's computer has one drive, and the bios is configured to have raid enabled. When I try putting it in legacy / no raid mode windows gets a bsod during boot and restarts. Not sure what's up ...
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100 views

Pegasus RAID *missing* a drive

I have a RAID5 Pegasus R6, connected via Thunderbolt. At some point, it started making strange repetitive beeping noises; when connected, one of the drives wasn't showing up at all. Shortly ...
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28 views

Multi-channel SATA RAID card to RAID 4 Bay Enclosure

I have a Mediasonic ProBox HF2-SU3S2 4 Bay 3.5" Hard Drive Enclosure. The box only has one eSATA port and one USB 3.0 port on the back. According to the manual of this storage box I need to get a ...
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1answer
43 views

linux + RAID - on which disk are my file?

I have a server with 4 physical disks ( HP WK 8600). Seems like the 4 disks are mounted on a RAID card. The Ubuntu 14.04 sees only one disk. -wks:/dev$ lsscsi -g [2:2:0:0] disk INTEL ...
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42 views

Fix boot sector / raid issue

So I had windows 7 installed on a raid 0 "drive", and therefore had my bios set in raid mode rather than AHCI mode. I then installed installed win 10 on another drive. It's just 1 SSD, no RAID, but ...
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1answer
1k views

Repair raid after bad suspension (Error Occurred 0)

My zenbook after a standby problem in xubuntu 14.04 is not booting anymore, neither xubuntu nor Windows want to boot. This screen comes up after BIOS: pressing ctrl-i i obtain: Option 1,4 and ...
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72 views

Can Preload CLI provide same\alternative RAID setup options?

So I access server over supermicro IPMI which does not support USB mouse thus WebBIOS for RAID setup is not an option. Yet "MegaPCLI SAS RAID Management Tool" is an option and I hope alternative. ...
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1answer
72 views

LVM2 RAID6 CentOS 7 not working

I have a server with 4 spare 6 Tb disks. I want to set up RAID6 on these four disks. It is well understood that 4 is the minimum one needs to set up RAID6. No matter what I pass to LVM2, I get ...
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1answer
413 views

RAID 0 + Backup

I have two 1GB hard (A) drives, and one 2TB hard drive (B). What I want to do is set up a RAID 0 on (A) and then back it up to (B). To my understanding, this would be different than a RAID 5 set up, ...