Questions which refer to software RAID implementations.

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0
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1answer
2k views

Windows 7 and software RAID 1 for system [closed]

So I have been using Linux software raid for ages, unfortunately now I need to install Windows 7 on a notebook and since the machine has two disks I was wondering how do I setup software Raid in ...
3
votes
2answers
619 views

Windows 7, raid 1 with advanced format drive

I had a nice software raid 1 (using windows 7 raid) working when one of my drives failed. I replaced it by another one (WD blue 1 TB) which uses 4k sectors, and this makes windows unhappy (Cannot ...
1
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1answer
1k views

Windows 7 Dynamic Mirror Fails Redundancy

I have two 1TB HDDs forming a single volume in Windows 7 with a "Mirror" layout and a "Dynamic" type. The status is "Failed Redundancy" according to the Disk Management tool in the control panel. ...
2
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2answers
2k views

Are there any good software-based RAID 1 mirroring alternatives to Windows 7 Computer Management?

I only have Windows 7 Home Premium, not Professional, so the mirroring option isn't available in Computer Management. Are there any good alternatives? It's possible RAID 1 is overkill for what I'm ...
2
votes
1answer
1k views

Degraded RAID5 and no md superblock on one of remaining drive

This is actually on a QNAP TS-509 NAS. The RAID is basically a Linux RAID. The NAS was configured with RAID 5 with 5 drives (/md0 with /dev/sd[abcde]3). At some point, /dev/sde failed and drive was ...
1
vote
1answer
194 views

how to boot without assemblying raid arrays (or assembling them correctly)

I had one debian 6 system with two harddisks on raid1 set up via mdadm. built on simple partitions (/dev/sdb3, /dev/sdc3). at least on the old system, everything is tied up via UUIDs. then i inserted ...
8
votes
1answer
513 views

Find files affected by bad blocks with md-raid5 and LVM

I've been doing a lot of research on this topic over the last few weeks - and I think I'm close to completing my recovery, as much as is possible at least. To make a long story short, I'll just ...
1
vote
2answers
105 views

Is there such thing as a half duplex raid-1?

I was thinking the other day. Then again, just now: So I thought "if I thought of it, someone else must have." So this idea was, in a raid-1 mirror(ish), One drive will write, and one drive will ...
3
votes
1answer
3k views

Setting up Intel RST on Ubuntu 12.10

I want to know if it is possible to set up caching using my notebooks mSSD that runs ubuntu 12.10 and Win 7 on the HDD. I use ubuntu much more and would prefer to cache files that it uses rather than ...
2
votes
3answers
978 views

How to recover data from software RAID 5 disk partition

I have CentOS 5.8 on my computer, with 5x 1TB hard drives. I used software RAID. (RAID 1 as a boot partition md0, RAID 0 as a root partition md1 and RAID 5 as /home partition md3). Unfortunately one ...
-2
votes
1answer
977 views

Software RAID 1 broken, how do I fix this?

I'm running CentOS 6 x86_64. There is a software RAID 1 being used on the two internal 80GB drives. I got the following e-mail sent to me: A DegradedArray event had been detected on md device ...
0
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0answers
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 ...
0
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2answers
5k views

Set up raid 1 after OS installation

I bought 2 Lenovo thinkstation E31 and I want to set up RAID 1 on them. I added a hard drive for each. I went in the BIOS and set it to RAID then I pressed ctrl-l to start the raid manager but it ...
0
votes
1answer
42 views

Old Raid pops up and destroys everything

I have a root server with a mdadm two-disk raid 0 on Ubuntu. One HDD failed and I continued to work on the second. The server hoster somehow repaired the defect HDD and after a server restart it was ...
0
votes
1answer
80 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] ...
0
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1answer
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 ...
1
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0answers
248 views

At what point does RAID 0 stop being fast and just become dangerous? [closed]

I have an interesting RAID setup across 2 harddrives on my home computer. I have /tmp and a mount point(/home/machines) for virtual machines (along with a few other mount points). These partitions I ...
0
votes
1answer
151 views

Apple RAID configuration vs Hardware RAID

I am researching external HDD's capable or RAID 1 to store a large amount of video content during overseas filming. After filming, the content will be brought back to the office and offloaded onto our ...
0
votes
1answer
7k views

How can one setup RAID 1 in Linux Mint 13?

I am trying to setup a Linux Mint 13 system using mdadm, with 2 1TB hard drives for a software mirror. I have tried following instructions found for Linux Mint 12, but the instructions fail to mention ...
0
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0answers
427 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 ...
1
vote
2answers
2k views

Debian installation and RAID5

I just bought a HP Microserver for use it as dns, http, vpn, file storage and also for backups of other computers at home. I already have 2 1Tb HDD's, so I thought to buy another 2 HDD's and install ...
0
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2answers
1k views

FreeNAS RAID5 Server - CPU Choice

What factors should you consider when choosing a CPU for a FreeNAS server? What are the implications and limitations based on CPU in this context? Currently I'm looking to build a FreeNAS server ...
2
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2answers
1k views

Testing software RAID5 by pulling a HDD live. Bad idea?

I'm running Ubuntu Server 10.10, with software RAID5 and LVM running on top of that. I have four 2TB HDDs. I also have a separate boot drive with incremental full-system snapshots that run every four ...
1
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0answers
301 views

Windows 7 : soft RAID1 and dynamic volumes reliability

My setup is quite classic nowadays : 1 SSD for system/apps and 2 HDDs for data setup in a fake RAID1 array. I also have a backup scheduled every week for the data drive in case it fails because I ...
1
vote
1answer
789 views

Take one disk of external mdadm data raid 1 to travel

I have a mdadm software raid 1 on external disks with media data. For travel I want to take the data with me. I imagine to set the raid and the underlying filesystem in readonly mode and take just ...
1
vote
1answer
97 views

RAID 1 : one device reads while the other writes symmetrically. What is going on?

Take a look at the disk throughput of this two disk software RAID 1 array in a Linux 2.6.26-2-686 Debian system : As you can see, one device reads at a speed apparently close to its top throughput ...
0
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1answer
169 views

Re-assembling a linux RAID on different system

I am in the process of shopping for drives for my Linux Server (CentOS 6.3). I think I have it narrowed down to RAID 5 or RAID 10 (have to see what hard drive prices do) and using the Linux Software ...
2
votes
1answer
1k views

Having trouble with EXT4 on LVM on software RAID 5 (corruption)

Here's the quick and dirty of my problem. I'm using Lubuntu 12.04, Xubuntu 12.04 and plain Ubuntu 12.04. Tried with generic kernels 3.2.0-25 and 3.2.0-26. This issue persists on all 3 variants which ...
5
votes
2answers
10k views

Disk is apparently in use by the system

I've just fitted two disks to my home server. I'm trying to format and then raid them but I'm getting a problem that hours of Googling hasn't resolved this. The error that I'm getting is: # ...
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0answers
1k views

Linux - Repairing bad blocks on a RAID1 array with GPT

The tl;dr: how would I go about fixing a bad block on 1 disk in a RAID1 array? But please read this whole thing for what I've tried already and possible errors in my methods. I've tried to be as ...
1
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1answer
3k views

How do I tell mdadm to start using a missing disk in my RAID5 array again?

I have a 3-disk RAID array running in my Ubuntu server. This has been running flawlessly for over a year but I was recently forced to strip, move and rebuild the machine. When I had it all back ...
0
votes
1answer
975 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 ...
6
votes
2answers
3k views

mdadm RAID Fast Setup with Empty Drives?

I am recreating some RAID5 disks as RAID6 with mdadm. There is no data on the drives that I care about. Setting up RAID takes a while to setup the shape - I accept that when there there is data that ...
3
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0answers
1k views

Is it possible to use software raid in Windows 7 on the boot partition?

I want to use RAID 1 on my workstation configuration at work, and I've been looking at using the build in mirror functionality in Windows 7. When you click on the add mirror option it presents you ...
2
votes
1answer
346 views

Connecting 6 hard drives with 4 available SATA connections

I'm building my first home NAS right now, and I have a Mini-ITX motherboard with 4 SATA connections. I'd like to connect 6 hard drives in total and (preferably) use software RAID. My question is: ...
0
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1answer
269 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 ...
5
votes
4answers
3k views

RAID 1 on 2 external HDDs

I have an Ubuntu 12.04 server on my old laptop. Its HDD (160 GB) is too small for the file storage I need, so I'd like to attach a couple of external HDDs to it (through USB ports). The data I'll keep ...
2
votes
2answers
1k views

How to set up software RAID 1 on Ubuntu 12.04?

My primary partition is sdb. I add new disk (sda) and formatted it as shown below: fdisk -l Disk /dev/sdb: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 ...
1
vote
2answers
8k views

Ubuntu 12.04 - Add RAID 1 Array on existing device?

I read How can I add a RAID 1 array in Ubuntu 10.04 and Installing Raid 1 on Existing Ubuntu Server. However, I only have the following 2 hard drives: dev/sdb1 where Ubuntu 12.04 is currently ...
0
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1answer
218 views

Ubuntu - inconsistent performance with software raid-1

I'm installing a new system using soft-raid 1 with two physical disks. While running a few tests (after waiting for the initial sync to complete) I found the harddrive speed was highly inconsistent. ...
2
votes
1answer
387 views

8 hard drives, very same model, software RAID0, terrible performance

I have 8 hard drives in my PC, assigned as storage. Three of them are attached to the mainboard. Four of them are attached to a controller [ SiL 3114 ] One of them attached to an another ...
3
votes
2answers
5k views

Can you add a hard drive to a RAID?

I've decided on creating a NAS running FreeNAS using a software RAID 5 setup. I want to start the RAID with 2x2TB drives and slowly add more 2TB drives as I go. Is this possible? If I have a full RAID ...
2
votes
3answers
799 views

Can I use an entire drive for as a software raid member?

Can I use /dev/sda and /dev/sdb for my RADI1 configuration? Or do I first have to partition both with a single Linux raid partition?
0
votes
1answer
528 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 ...
6
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1answer
2k views

A ZFS or LVM or MD redundant heterogeneous storage proposal

I have the same problem most people have: how to create a reliable personal storage solution with the fact that: Hard drives fail with alarming regularity. Losing files is unacceptable. I will buy ...
1
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0answers
949 views

mdadm raid5 read error not correctable

I have a software raid5 setup existing of 4 disks. sda, sdb, sdc, sdd Since everything was up and running I wanted to test the array. To do this I pulled the plug on one of the disks (sdd). Everything ...
0
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1answer
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.
1
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1answer
5k views

XFS Can't Read the Superblock

I awoke this morning to find an email from my RAID host (Linux software RAID) telling me that a drive had failed. It's consumer hardware, it's not a big deal. I have cold spares. However, when I ...
0
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0answers
394 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 ...
1
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2answers
889 views

chkdsk on a mirrored drive

I am running Windows 7 and have two 1TB hard drives mirrored using Win7 disk management. (They are not the system disk.) I am getting NTSF Error events that say "The file system structure on the ...