The raid-1 tag has no wiki summary.
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How to convert existing disk to raid1 in debian
I have 1Tb drive with LVM on it. Now I've installed another 1Tb hard drive. And I want to make RAID1 without losing data on the first disk. Is there any way to do that without backing up data and then ...
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1answer
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+50
Simple mdadm RAID 1 not activating spare
I had created two 2TB HDD partitions (/dev/sdb1 and /dev/sdc1) in a RAID 1 array called /dev/md0 using mdadm on Ubuntu 12.04 LTS Precise Pangolin.
The command sudo mdadm --detail /dev/md0 used to ...
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18 views
What triggers a RAID 1 mirror rebuild on a Lacie 2 Big USB3?
I have a RAID 1 mirror on a Lacie 2 Big USB3. When I break the mirror by pulling out one drive, keep making changes on the remaining drive and finally put the first one back in, the drives stay ...
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3answers
80 views
RAID1 Setup - Are Empty/Blank/New hard drives a requirement
I need to setup RAID1 (software/hardware).
I have a 1TB (no space left), can I buy a new 1TB and setup RAID1 successfully without a remote chance of loosing anything on the existing 1TB, as I got it ...
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24 views
Mount RAID1 drive - other drive missing
Case:
Two drives had been configured in a NAS (DNS-323) as RAID1 drives (ext3).
Now one drive is .., gone, and the NAS too.
How can I mount the second remaining drive?
I have a docking station ...
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1answer
87 views
ubuntu 120.04 software raid 1
my primary partition is sdb. i add new disk on sda. i formated it like it is shown in fdisk. Now i want to install mdadm.
Do i need to create md0 and md1 becouse i already have:
...
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1answer
796 views
Ubuntu 12.04 - Add RAID 1 Array on existing device?
I read this howto
Ubuntu 10.04 - Add RAID 1 Array?
and
http://ascend4.org/Installing_Raid_1_on_Existing_Ubuntu_Server
but i only have 2 disks.
dev/sdb1 -> where is currently ubuntu 12.04 running
...
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1answer
38 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.
...
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2answers
102 views
How do I break a failed software RAID1(mirror) in Windows 7 without wiping data on the mirror HDD?
In Windows 7 I have created a software RAID1 array that has failed(failed redundancy) due to some weak sectors on one of the HDDs.
I want to be able to reactivate the mirror HDD as a separate ...
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2answers
140 views
“error: no such device” at boot in Ubuntu Server 11.10 with Raid1
I have a configuration of 4 HDD's as Raid1 2 pairs of 2 HDD's. First Raid1 pair is for system, so I just made an 40GB space for swap, and the rest of it for the root, the second pair of Raid1 is for ...
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154 views
Windows 7 won't boot from raid-1 disks until secondary non-bootable disks are removed
I have an ASUS X58 motherboard with a Intel ICH10R southbridge raid controller. Bootable raid-1 SATA disks are on channels 4, 5. Secondary raid-1 SATA disks are on channels 0,1. Everything was ...
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1answer
134 views
RAID 1 - What happens if I disconnect both disks?
I'm trying to install windows on a new SSD, and I'm having problems getting it to work correctly. I've read that it's good to disconnect all other drives and do a format and clean install.
Only ...
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1answer
54 views
How to move a windows machine properly from RAID 1 to raid 10?
Goal
I would like to add two more hard drives to my current RAID 1 setup and create a RAID 0 setup on top of the two RAID 1 setups (which I believe is referred to as "RAID 10").
Components Involved
...
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4answers
194 views
Restore data from a single RAID1 disk
I have one half of a RAID 1 array (from a LaCie 2big Network NAS), from which I'm trying to recover the data.
I've connected the disk to my desktop PC (Ubuntu 11.04) using a Sitecom SATA/USB adapter, ...
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1answer
153 views
Can I pull one HDD from RAID1 and still use 2-bay QNAP NAS?
I have a QNAP TS-239 Pro II+ with 2 x 2 TB HDDs in RAID1. I'm running 3.6.0 Build0210 firmware. I access the NAS from my iMac (OS X 10.7.x). The NAS HDDs are formatted as ext4.
I'm sitting at about ...
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1answer
151 views
Windows 7 mirrored volume fails during testing of fail-over mode
I have two hard-drives mirrored (i.e. RAID-1)to be my D: volume (non-boot drive) in Windows 7.
Click to enlarge.
This is the first time I have tried mirroring in Windows 7, but I've had (sometimes ...
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0answers
236 views
mdadm: hot remove failed
My RAID1 is degraded and I need to replace /dev/sdb. However, I could mark /dev/sdb5 (in /dev/md1) as failed and removed it, but I can't do the same with /dev/sdb1 (/dev/md0 which is mounted on /):
...
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2answers
129 views
How does RAID 1 determine whether a disk is corrupted?
I've built a RAID 1 array of 2 disks, A and B.
That means that every bit on A is equal to a bit on B. If one disk fails, I can safely retrieve my data from the other disk. But then I started ...
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1answer
399 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 ...
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1answer
45 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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2answers
328 views
Does RAID1 increase performance with Linux mdadm?
I have a cheap 2-bay NAS with a 2TB HDD. To be robust against disk failure, I'm thinking of buying a second 2TB HDD and putting it in RAID1 with Linux mdadm. The file system is ext4.
Will this ...
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2answers
57 views
What is the impact of using a Desktop edition disk in a RAID 1 setup?
I am setting up an onsite backup server in RAID 1 (soft) with low usage.
I prefer quietness and reliability over performance: so I selected one of these "green" disk.
Some NAS brand recommand these ...
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2answers
91 views
What are the theoretical performance differences between a single disk and a RAID-10 array?
Not taking hardware RAID cards into account, what kind of theoretical performance improvements should I see when using 4 disks in a RAID-10 array vs 1 disk by itself?
For example, on RAID-0, I would ...
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2answers
78 views
Juggling HDDs and SSDs between home server and laptop
I just built a home server a few months ago with four 2tb drives for storage of media. It was booting from a 120gb Vertex3 SSD. That drive failed, now I'm realizing I don't need a SSD for the boot ...
2
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1answer
137 views
Can I mix a 15K drive with a SSD drive in a hardware RAID1?
I've got a hardware RAID1 of two Hitachi 15K drives here, forming the array with an Adaptec controller. Let's assume one disk dies and I'd like adopt SSDs. I would then replace the dead drive with a ...
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2answers
199 views
How does one enable --write-mostly with Linux RAID?
Unfortunately the mdadm and mdadm.conf man pages are not quite up to par. I would like to enable the --write-mostly flag for my RAID, but neither the man pages nor the internet will tell me how. I am ...
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3answers
374 views
How do I mount a software RAID1 (mirror) created by windows in Linux using mdadm?
I'm switching my Windows server to Ubuntu and am trying to get my software RAID1 (mirror) that I created in Windows to show up in Ubuntu. I have read that this is possible here using mdadm, but I'm ...
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2answers
193 views
RAID1 External HD not working - shows up in Disk Utility but not usable. - MAC OSX 10.6.8 - What do I do?
I bought a dual bay enclosure from NewEgg I'm guessing 2 years ago to set up a RAID1. It's now a discontinued model but it is from Sans Digital. I put two Western Digital 1tb drives in it.
It's been ...
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1answer
978 views
Install Linux mint with Raid
My MB supports fake raid (Intel DH67CL motherboard). But I was using the system in 'software raid' as I could not correctly set up fake raid in Debian. Now, I decide to use Linux Mint 12. During the ...
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1answer
181 views
How do I create a complete disk mirror in Windows Server 2008?
I'm trying to mirror a full Disk in Windows Server 2008, however I don't see any options to mirror a full Disk, only Volumes.
Both disks are the same brand, size and are configured as Dynamic Disks, ...
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47 views
Unrecognised device in blkid output
Unrecognised device **/dev/md0p2**. Possibly from previous trails with raid1 and lvm. It's of type lvm2pv, just like /dev/sda2, which would suggest it's a physical volume for lvm.
But, pvdisplay ...
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1answer
139 views
Windows will not load - Conflict between Windows repair and Raid 1 array/driver?
I have a friend whose computer hangs when it tries to load Windows XP. It has worked fine until a couple weeks ago.
*Dell Dimension (don't have model number right now)
*Pentium 4
*1 GB RAM
*2 ...
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1answer
229 views
CentOS - mdadm raid1 drive won't mount to default location
I'm running CentOS 5.5, the system, boot, swap, etc. is all on /dev/sda and I have two identical single-partition drives /dev/sdb1 /dev/sdc1 that are configured in RAID1 (using mdadm). It was working ...
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1answer
120 views
How to remove swap partitions from RAID 1 Array on Ubuntu?
Can anyone point in the right direction on how to remove SWAP out of a RAID1 configuration on Ubuntu 10.04 server? According to the Ubuntu Advanced installation guide, here, it said to add swap to the ...
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1answer
591 views
Seagate Barracuda Green & Intel RST RAID 1 - slow drive wake up / clicking
I've got an interesting problem that I can't quite figure out. I'm using dual Seagate Barracuda Green 2TB drives ( ...
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1answer
133 views
Windows 7 Mirroring Drive Failure
I had a few questions when a drive fails that is setup with software RAID 1 in Windows 7, e.g. Dynamic disk mirroring:
Will it still boot using the good drive (assuming boot drive is RAID 1), or ...
3
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1answer
393 views
SSD in RAID 1 Questions
I want use SSD drives in RAID 1 setup. Although performance is important, reliability comes first, so I'm going with Intel drives (either the 320 or 510 series).
This will be installed in a Dell ...
3
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1answer
80 views
I'm trying to mirror drives of the same model, but one appears to be slightly larger
I'm trying to mirror a drive using Disk Management in Windows Home Server 2011. The target drive (Disk 1) is the exact same model as the source drive (Disk 0), but the target drive appears to be 1MB ...
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2answers
182 views
How can I find out if my software RAID 1 is working?
I am running a software RAID 1 in Windows 7 Ultimate x64.
Are there any tools in Windows 7 that can monitor or detect whether my RAID 1 is working properly?
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133 views
Intel Rapid Storage Technology RAID 1 but don't see a new volume
I create a new RAID 1 volume using Intel RST from two 1TB HDD. I choose to have data on my old drive kept. Intel RST will start synchronizing its volume. Once it finishes, I do not see a new volume in ...
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0answers
65 views
Will Thermaltake Muse R-Duo Raid reset lose data?
I have a Thermaltake Muse R-Duo Raid chassis with two drives installed and DIP switches set to Raid-1. However, only the left lights are lighting up and I have data on the drive. I'm guessing it is ...
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0answers
60 views
Linux + convert RAID0 to RAID1 on Blade Server HS21
I have HS21 blade server
My blade server configured as RAID0 – one disk ( disk with red-hat Linux OS )
My target is to configure the blade server to RAID1 – mirror with 2 disks ( I need to add second ...
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1answer
138 views
Recover data from NTFS disk after RAID1 mirror operation
I have two identical disks attached to my Asus P5Q Motherboard which are not operating in RAID1 mode. Disk1 (640 GB, almost full) is/was 2 partitions (system, data - both NTFS) and disk2 (640 GB, 80 ...
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2answers
65 views
Create partitions for new install of Windows 7?
Does it really make sense anymore to create partitions?
I'm installing Windows 7 x64 and would like to have the simplicity of 1 large partition. If it matters, the main hard drive is 2x120GB SSD ...
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1answer
266 views
Windows cannot boot after configuring sata to RAID mode
I have recently set up a new PC System, and still have issues configuring the harddisc raid.
Here is the detailed description of my problem:
The relevant components are
an ASUS P8Z68-V PRO, Sockel ...
3
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3answers
165 views
RAID 0 + 1 with 3HDD 2x1TB + 1x2TB
Is it possible to make RAID 0 + 1 with 3 Hard Drives
I have currently setup raid 0 with 2x~1TB HDD (1.8TB approx)
Now i got 2TB HDD (1.9TB approx) which i want to be as a mirror drive.
Is is ...
3
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1answer
314 views
Malfunctioning TS-239 Pro II+, how do I recover my data?
I'm in a real bind here. About a week ago I bought a QNAP TS-239 Pro II+ and transferred all my important data across to it. It's a 2 TB RAID 1 array, because I really don't want to lose this stuff.
...
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2answers
582 views
Using Intel Rapid Storage Technology RAID-1 in “on request” update mode is a viable backup solution?
I have 2 Seagate Barracuda Green 2TB HDD in RAID 1 using Intel Rapid Storage Technology. I use them as a storage volume, that is not accessed very frequently, and most importantly, that is not written ...
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0answers
197 views
dmraid -r" just returns No RAID disks
I have installed centOS 5 on our HP Proliant ML110 GH6 server and configured the Smart Array through BIOS
Now, i would like to set up an e-mail notification with the RAID status (especially if it's ...
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1answer
1k views
How can I mount a single RAID 1 disk/partition as ext3?
I need to copy data from a single HD, which used to be part of a Linux RAID 1. I've googled around, but can't find any clue how to mount partitions from this single HD.
Background: The HD comes from ...
