Questions which refer to software RAID implementations.

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Build one logical drive from hdd and ssd drives (with a tweak!)

How is it possible to build one logical drive in linux from two physical drives, hdd + sdd with the below rules: All writes are replicated to both drives (Kind of RAID 1). All reads are only ...
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54 views

Software RAID 1 Configuration

I have created a software RAID 1 quite some while ago and it always seemed to work for me. However I am not completely sure that I have configured everything right and do not have the experience to ...
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30 views

mdadm raid 6 stuck on rebuilding

I have a raid 6 running consisting of 9 1TB drives. Some time in the last couple of days, one of them became faulty and the raid startet rebuilding. But apparently it is stuck ... This is the raid: ...
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38 views

How to set boot disk after disabling mdadm raid 1?

I had two disks in raid 1. The device contained the whole system. Disabled it from a rescue disk with: (there were three partitions) mdadm --stop /dev/md1 mdadm --stop /dev/md2 mdadm --stop /dev/md3 ...
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47 views

Can I move a RAID drive to another Sata port?

I currently have a Windows Server 2008 R2 machine with 4 x 1TB drives in software RAID5 controlled by WS 2K8. I am planning to upgrade to 4 x 3TB in the same software RAID5. Clearly 8 sata ports (9 ...
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20 views

How to handle a Linux software RAID when one drive has a hardware failure?

I have a server that has two internal hard drives. What happens when one drive has a hardware failure exactly? Does it send an e-mail message to root to get your attention? When it has been ...
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61 views

CentOS Gnome only showing 1TB on 6TB Server?

I just bought a new server and want to use it to store files, It has 2x 3TB hard drives. I Set them up in raid 0 as i don't need any redundancy. I don't know much about servers and command-lines ive ...
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57 views

Why is windows server 2008 resyncing new raid 5 array?

I have setup a software raid 5 in windows server 2008 standard, immediatly after creating it now says resyncing. What is it resyncing when there is no data on the volume? Is it safe to write data to ...
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34 views

Skip initial resync on a new Windows software RAID 5 build?

I just added 8x4TB and created a software RAID5 volume. Server 2008R2. Based on progress so far, it's going to take 8 days to complete the resync. I'm not a busy man, but that's asking a lot. ...
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14 views

Ubuntu boot through failed RAID

I have a large media partition as a separate RAID5 on my Ubuntu server. The server is not easily accessible, so I need it to continue the boot process in all but the most dire circumstances. Right ...
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86 views

Hybrid Raid-1 HDD + SSD — Write Intent Bitmap

I am currently running a laptop with 1 HDD and 1SSD. I currently am using mdadm to put some partitions in a raid 1 configuration with --perfer-write set on the HDD. I have this working correctly ...
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227 views

Understanding /proc/mdstat [U_] VS [_U]

My server is set up with raid1. A few nights ago sda fell out completely and data was corrupted. I replaced the drive, cloned the partition table and added the respective arrays. While adding sda3 ...
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41 views

LVM while mdadm is creating a RAID6

So earlier today I was setting up a new server and creating a RAID6 array with mdadm. I then decided to create a physical and logical volume with LVM while it was running and throw on ext4. So before ...
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44 views

Is it possible to restore lost files from a repartitioned raid 5 array?

I decided to reinstall my server from Windows Server 2008 R2 to Ubuntu Server 13.10. Of course, i took a backup of the (531GB) files on my software raid 5 array (4x3TB, no hotswap), however, some ...
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35 views

Is it possible to create software Raid array with operating system partition included?

I know that software raid array can be created in the OS it self. But my question is, Is it possible to create a software raid array including partition which is having Operating System installed ? Or ...
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1answer
70 views

Recover software RAID

I built a RAID-1 with two hard drives using mdadm. Command used was: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb /dev/sdc it went fine, I create partition table and partitions in ...
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34 views

Can OpenFiler do software RAID and then expose that as an iSCSI target?

I want to build a SAN for personal use for the house server. I came across OpenFiler. I don't want to rely on hardware RAID since the cards can be costly and if the card dies I will have trouble ...
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134 views

Use of mdraid in XenServer 6.2 limited by dom0?

I've been playing with XenServer 6.2 in a lab environment and have set up a glorified desktop with a few 7.2K disks in it. Not worried about official support, it's just for fun. I have enabled ...
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76 views

How can I change super-minor number of a software raid array meta 1.2?

I had a double failure while I was away on the holidays of my array. As I was saving the data, I created a new array on a new drive has /dev/md1 and copied the info from my almost failed remaing HD ...
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1answer
28 views

Is it possible to operate two RAID-0s alternately?

I have a software RAID-0 (two hdds) on a WIN7 machine that holds all footage of a video project. If I remove and store these drives and install two new drives as RAID-0 for another project, will I be ...
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124 views

Repair partition table for disks in a RAID1 array

Here's my problem. I have several arrays. RAID1. I've scanned each drive that's part of an array with gdisk and it reports problems. One array (2 drives) has a damaged GPT partition table and a ...
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17 views

MSA 20 SATA for home use

I am looking at getting an MSA 20 off eBay for my home, I am curious about the software, is it a free download from HP or is it included in the controller? The one I am looking at has 1 controller ...
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56 views

Recover Truecrypt-encrypted software-RAID5 (maybe overwritten superblock)

I updated some parts of my fileserver and installed the latest Debian version. It detected the mdadm raid, but marked the array as 3 active devices and 1 spare device. I thought this was wrong and I ...
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60 views

linux mdadm: recover overridden array

I had 2 3TB disks in a RAID1 array as /dev/md2. I tried to recover that array, by recreating it (which was probably stupid). I issued mdadm --create /dev/md2 --assume-clean --raid-devices=2 ...
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35 views

Linux software raid [duplicate]

I want to know if I used software raid on Linux for a non system disks (raid 5 as example),then I lost the system for any reason ! can I restore the data on the raid after a fresh installation ??
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248 views

TrueCrypt Windows 7 Software RAID: add mirror to system encrypted drive

I have my Windows 7 system drive fully encrypted with TrueCrypt 7.1a using "system encryption". Now I have a second, identical, empty drive that I'd like to use as a mirror of the system drive. In ...
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171 views

Power loss during mdadm RAID level change

As per the title, my mdadm RAID was in the process of migrating from level 6 to 5 when the power cut out momentarily. Unfortunately I am no longer able to reassemble the array - the assemble command ...
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65 views

Raid drives missing filesystem

I recently had to do some troubleshooting with a RAID 5 on Ubuntu Server (a software raid). I ended up removing everything and start from scratch with 2 new drives. So I took out 2 out of 4 drives, ...
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1answer
116 views

Adding sda1 vs. sda to a linux software raid

I'm running a Linux md software RAID 6 on several USB hard-drives. Each drive is partitioned to contain one partition of type fd (linux raid). My RAID is built on these partitions, i.e. it uses sda1, ...
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3answers
528 views

Can a secondary SATA drive under Win 7 Pro software RAID 1 mirror be boot-able with no hassle?

Using Windows 7 Professional software RAID 1 (Mirror) of two identical SATA drives is it possible in the event the primary drive fails that the system may boot off the secondary drive without doing ...
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25 views

Madm scan less uuid's than drives

I have a raid6 array with 5 disks(was started with 4 and then added on on-the fly - without rebooting). I have noticed something a bit strange when i was preparing to add a new drive : mdadm ...
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428 views

Western Digital Red and Linux Software RAID

I have a Linux software RAID 6 setup with a bunch of 2TB Western Digital Green drives. The setup works well for a home system on a budget, but resource demands are growing and false drive failures ...
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55 views

Need to run a program if a hard drive fails using Mega-raid software

I am hoping to run a program when a hard drive fails. I am using Mega-raid software on a windows server 2008. I was thinking of using windows event viewer, to run a program when an event comes in on ...
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1answer
77 views

How can I delete soft/motherboard RAID 1 from a different computer?

I have a drive. It was part of a RAID 1 mirror on a motherboard-based raid controller (nVidia controller on an ASUS A8N-SLI Deluxe), which, if I understand correctly, is considered to be "soft" raid, ...
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326 views

SATA Raid-0 Mixing SATA-II + SATA-III: Change jumper?

I have 2 SATA hard disks They are 2 TB each. Both are WDC Greens Respective models of *EARS *EARX EARX is SATA-III While the other is not. While the raid does function as is, would there be any - ...
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1answer
257 views

Adjusting mdadm priority on Ubuntu

I have Ubuntu 12.04 running on my new server, and it is setup to run off of one drive, then 2 drives that are mirrored using mdadm. When streaming files or media from it, it is extremely slow. I was ...
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48 views

Do a Re-Build During a Re-Shape?

On my Linux software RAID 6 array, I'm currently mid-reshape and 2 drives have been marked as failed. I've swapped them out and added new ones to the array, which are currently marked as spares. The ...
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79 views

Linux RAID Re-Shape Stopped

For the past 8 hours my mdadm re-shape process has been stuck. The output is: Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] md0 : active raid6 sdo[11] ...
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101 views

Software raid hard, change the primary hard drive

I have a windows server 2008, and 2 hard drive which set as RAID 1, now the primary hard drive report some error and have to change. I have backup of major data but I have many setting on it's IIS and ...
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413 views

Is there any way to stop or pause Windows software raid re-synching?

I have two physical disks, each one holds two volumes, they are Windows software RAID1. E.g.: Disk A: Partition1 Partition2 Disk B: Partition1-Mirror Partition2-Mirror After an unclean ...
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951 views

How do I reinitialise a failed RAID 5 drive using terminal on Ubuntu Server

I've currently put together a new system and part of that has been creating a software RAID 5 using 'mdadm' in Ubuntu Server. I successfully got to the point where I create the array using: sudo ...
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1answer
268 views

Repairing windows 7 Raid 0

I have a raid 0 4 x1tb and 1x 3tb (a bit silly I know) but the partitions are now showing as RAW after I did a ckhdsk! is thair any raid reconfiguration software out there that will fix this? or is ...
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522 views

ICH10R based RAID vs Windows 7 software RAID

It seems that performance wise these solutions are about the same and thats not my main concern anyway, but I need to know how do they compare from the point of data getting corrupted? What are the ...
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123 views

How to identify raid1 disks

I would like to know how mdadm identifies physical disks of raid1 . I think it is managed by uuids not device file like /dev/sdc2 /dev/sdd2. But I can`t confirm such information of raid1.
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386 views

Is there any freeware software to ghost a RAID 1 disk?

Where I can find freeware software to ghost a RAID 1 disk? I installed Windows XP on a Dell server with a supported RAID card. I tried to ghost it using FOG project, but I think it doesn't support ...
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309 views

Resize a raid1 ntfs partition

My computer is running windows 7 on a software raid1 (ntfs obviously) partition. I would like to reduce the size of the partition (currently the on whole disk) to install a raid0 (or 1 I don't know ...
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54 views

Windows 7 Raid - Drives can't see each other

I'm trying to stripe two drives using the disk management tool. Both partitions give me the option to stripe them but when I use the wizard the other drive doesn't show up to allow me to raid to it! ...
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1answer
65 views

Need to replace OS drive on ubuntu system, how do i keep soft-raid partition?

So right now I have a HTPC with 5 drives in it. One drive is an OS drive (mounted on /) that is starting to fail, SMART is telling me continually that I have bad sectors. The other drives are 4 ...
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496 views

Update grub for whole disks added to software raid

I have a raid-1 running under rhel6 (/dev/md0) that is mapped to /. It contains two unpartitioned disks (/dev/sda and /dev/sdb). I'd like to be able to boot from either disk. But grub won't let me ...
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3answers
431 views

RAID-1 in RHEL 6; can't get partitioning on identical devices to look identical

I have a RHEL 6 fileserver. It contains two identical 2TB SATA drives. Both are supposed to contain one partition that takes up all the space on the drive (and this used to be the case). When I had ...